feat(wlan-setup): Go service for the WLAN setup page

wlan-setup/ is a Go service that will replace the nginx + njs backend of
wlan.renner.uno (switched over in a follow-up once the first image exists).

- Page, /whoami, /healthz; /{android,apple,windows}/install and /callback:
  authentik OAuth code flow (client wlan-setup, client_secret_basic), user
  check against X-authentik-username, per-device app password
  wlan-<platform>-... (29 days), profile per platform: Android Passpoint
  (application/x-wifi-config), Apple .mobileconfig with Passpoint, Windows
  CarrierProvisioning with Passpoint.
- Windows: the profile is signed with XML-DSig in the form of Microsoft's
  samples (enveloped, C14N 1.0, rsa-sha1, chain in KeyInfo) by the key in
  /etc/wlan-signing, kept for 5 minutes under a single-use token, and the
  browser is sent to ms-settings:wifi-provisioning?uri=.../windows/profile/<token>.
- Offline tests against a fake authentik; goxmldsig verifies the signature
  in the tests only.
- CI: wlan-setup-test (gofmt, vet, test -race) on PRs; build-ci-images
  builds gitea.renner.uno/gitea_admin/wlan-setup:YYYY-MM-DD-HHMM on main;
  Flux image automation follows the newest tag.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.woodpecker/build-ci-images.yml

@@ -41,6 +41,7 @@ when:
       - "ci/images/**"
       - "secret-rotator/**"
       - "review-bot/**"
+      - "wlan-setup/**"
       - ".woodpecker/build-ci-images.yml"
   - event: deployment
     evaluate: 'CI_PIPELINE_DEPLOY_TARGET == "build-ci-images"'
@@ -197,6 +198,31 @@ steps:
           --destination gitea.renner.uno/gitea_admin/review-bot:$TAG \
           --destination gitea.renner.uno/gitea_admin/review-bot:latest
 
+  # wlan-setup: the Go service behind wlan.renner.uno (802.1X/Passpoint setup page with per-device
+  # authentik app passwords). Runs after Gitea is up, so no ghcr mirror.
+  - name: build-wlan-setup
+    image: registry.gitlab.com/gitlab-ci-utils/container-images/kaniko:v1.25.20-debug@sha256:28af5a3bd9c51fedb353ad91de735eda53592b5c06a34e7f5a9550334725d7f7
+    directory: wlan-setup
+    when:
+      - event: deployment
+      - event: push
+        path: ["wlan-setup/**", ".woodpecker/build-ci-images.yml"]
+    environment:
+      GITEA_USER: gitea_admin
+      GITEA_TOKEN:
+        from_secret: ci_images_token
+    commands:
+      - mkdir -p /kaniko/.docker
+      - AUTH=$(printf '%s:%s' "$GITEA_USER" "$GITEA_TOKEN" | base64 | tr -d '\n')
+      - printf '{"auths":{"gitea.renner.uno":{"auth":"%s"}}}' "$AUTH" > /kaniko/.docker/config.json
+      - TAG=$(date +%Y-%m-%d-%H%M)
+      - |
+        /kaniko/executor \
+          --context . \
+          --dockerfile Containerfile \
+          --destination gitea.renner.uno/gitea_admin/wlan-setup:$TAG \
+          --destination gitea.renner.uno/gitea_admin/wlan-setup:latest
+
   # Runtime image, not CI tooling: a general-purpose alpine + jq base for
   # workloads that need to read JSON from a shell script. Named for what it IS,
   # not for who uses it — its first consumer is the zigbee2mqtt seed-data init

.woodpecker/ci-scripts-test.yml

@@ -35,25 +35,25 @@ when:
 steps:
   - name: model-selection-tests
     depends_on: []
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     commands:
       - sh scripts/ci/test-model-selection.sh
 
   - name: pr-review-mistral-tests
     depends_on: []
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     commands:
       - sh scripts/ci/test-pr-review-mistral.sh
 
   - name: promtool-rules-guard-tests
     depends_on: []
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     commands:
       - sh scripts/ci/test-promtool-rules.sh
 
   - name: yaml-citations-guard-tests
     depends_on: []
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     commands:
       - sh scripts/ci/test-yaml-citations.sh
 

.woodpecker/e2e.yml

@@ -26,7 +26,7 @@ steps:
     # fetch-models.sh response mapping. No cluster, no secrets, no network — the
     # ci-claude image just provides sh + jq. Keeps the flag-injection regression
     # test from rotting (it exercises the exact injection shapes).
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     commands:
       - sh scripts/ci/test-model-selection.sh
 

.woodpecker/security-scan.yml

@@ -70,7 +70,7 @@ steps:
     # this step is skipped — otherwise we'd fork-bomb PRs.
     when:
       - branch: main
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     environment:
       CLAUDE_CODE_OAUTH_TOKEN:
         from_secret: claude_code_oauth_token

.woodpecker/update-audit.yml

@@ -30,7 +30,7 @@ when:
 
 steps:
   - name: update-audit-agent
-    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.316
+    image: gitea.renner.uno/gitea_admin/ci-claude:2.1.318
     environment:
       CLAUDE_CODE_OAUTH_TOKEN:
         from_secret: claude_code_oauth_token

.woodpecker/wlan-setup-test.yml

@@ -0,0 +1,13 @@
+# Tests for the wlan-setup Go service (wlan-setup/). Offline: the tests run against a fake
+# authentik server, so the step needs no secret and no network beyond the module cache.
+when:
+  - event: pull_request
+    path: ["wlan-setup/**", ".woodpecker/wlan-setup-test.yml"]
+
+steps:
+  - name: go-test
+    image: golang:1.27.3-bookworm@sha256:d9b6a1beb9474adc2a1ce842573639b44b2a0dd49b6669f51d3821baf9ec37c9
+    commands:
+      - test -z "$(gofmt -l wlan-setup)"
+      - go -C wlan-setup vet ./...
+      - go -C wlan-setup test -race ./...

ansible/docs/edge-host.md

@@ -134,11 +134,13 @@ Afterwards:
 
 ## Day-2 notes
 
-- Image bumps: edit `edge_zwavejs_image` / `edge_sml2mqtt_image` in
-  defaults and re-run the play (no flux image-automation out here —
-  deliberate for sml2mqtt, acceptable for zwave-js). If a zwave-js bump
-  changes its Alpine major, also update `edge_zwave_alpine_base` and refresh
-  the preloaded `.so` (see "Logging & eMMC" → zwave-js).
+- Image bumps: Renovate opens a PR for `edge_*_image` in
+  `roles/*/defaults/main.yml` (tag + digest, `customManagers` in
+  `renovate.json`). No pipeline deploys to edge-1, so after the merge run
+  `ansible-playbook plays/install-zwave-gateway.yml` from `ansible/` on a
+  mesh-connected workstation. The play reads the image's Alpine release
+  itself and rebuilds the preloaded `.so` when it changes (see
+  "Logging & eMMC" → zwave-js).
 - open3e / E3onCAN updates: both are pinned to commits in
   `roles/heating-can/defaults/main.yml`, so re-running the play does NOT pick
   up upstream changes -- that is deliberate, these drive the heat pump. The
@@ -190,7 +192,7 @@ journal commit).
 
 - **Fix:** the `zwave-js` container preloads **`libeatmydata`**
   (`LD_PRELOAD=/usr/lib/libeatmydata.so`, mounted read-only from
-  `zwave-js/libeatmydata.so`). This makes `fsync`/`fdatasync` no-ops *for that
+  `zwave-js/libeatmydata-alpine<X.Y>.so`). This makes `fsync`/`fdatasync` no-ops *for that
   one process*, so the kernel batches the writes via normal writeback (~30 s)
   instead of forcing each one. The WS/MQTT value stream to Home Assistant and
   the on-disk cache are **unchanged** — full data resolution, no re-interview
@@ -199,9 +201,9 @@ journal commit).
   batch it); the only mount-level alternative is putting the cache on tmpfs,
   which makes the *whole* store volatile → re-interview on every restart.
 - **The `.so` is musl** (the image is Alpine-based), extracted from
-  `edge_zwave_alpine_base` — keep that var in sync with the image's Alpine
-  version; to refresh after a major bump, `rm zwave-js/libeatmydata.so` and
-  re-run.
+  `alpine:<X.Y>`, where `X.Y` is read from the image's `/etc/alpine-release`
+  on every run. A new Alpine release gives a new file name, so the play
+  extracts it, recreates the container and deletes the old file.
 - **Durability guard:** because `fsync` is neutralized, a hard power-loss
   during the (rare) settings write could truncate `settings.json`, which holds
   the **Z-Wave network keys**. `edge-zwave-settings-backup.timer` keeps a

ansible/roles/zwave-gateway/defaults/main.yml

@@ -13,12 +13,8 @@ zwave_base_dir: "{{ edge_base_dir }}/zwave-js"
 # survives moving the stick between machines.
 edge_zwave_device: /dev/serial/by-id/usb-Nabu_Casa_ZWA-2_80B54EE15720-if00
 
-edge_zwavejs_image: ghcr.io/zwave-js/zwave-js-ui:11.21.1
-
-# Alpine version the zwave-js-ui image is built on -- the source for the musl
-# libeatmydata.so preloaded into that container. Keep in sync if the image
-# bumps its Alpine major (check: docker exec zwave-js cat /etc/os-release).
-edge_zwave_alpine_base: alpine:3.22
+# Renovate-tracked (customManagers in renovate.json).
+edge_zwavejs_image: ghcr.io/zwave-js/zwave-js-ui:11.25.2@sha256:ac4874a3cbea61c0c60002a8fd8ae05104cc8eb2eae91aa05bd184972aa06853
 
 # Secret from inventory/group_vars/edge_host/vault.yml:
 #   edge_zwavejs_session_secret

ansible/roles/zwave-gateway/tasks/main.yml

@@ -15,17 +15,31 @@
     - "{{ zwave_base_dir }}"
     - "{{ zwave_base_dir }}/store"
 
+# The preloaded .so is musl and must come from the image's own Alpine release.
+- name: Read the Alpine release of the zwave-js-ui image
+  ansible.builtin.command:
+    cmd: docker run --rm --entrypoint cat {{ edge_zwavejs_image }} /etc/alpine-release
+  register: zwave_alpine_release
+  changed_when: false
+  check_mode: false
+
+- name: Name libeatmydata.so after that Alpine release
+  ansible.builtin.set_fact:
+    zwave_alpine_minor: "{{ zwave_alpine_release.stdout.split('.')[:2] | join('.') }}"
+    zwave_libeatmydata: "libeatmydata-alpine{{ zwave_alpine_release.stdout.split('.')[:2] | join('.') }}.so"
+
 - name: Extract musl libeatmydata.so (matches the zwave-js-ui Alpine base)
   ansible.builtin.shell:
     cmd: |
       set -euo pipefail
       tmp="$(mktemp)"
       trap 'rm -f "$tmp"' EXIT
-      docker run --rm --network=host {{ edge_zwave_alpine_base }} \
+      docker run --rm --network=host alpine:{{ zwave_alpine_minor }} \
         sh -c 'apk add --no-cache libeatmydata >/dev/null 2>&1 && cat /usr/lib/libeatmydata.so' > "$tmp"
       test "$(stat -c%s "$tmp")" -ge 8000   # sanity: real .so is ~14 KB, guards against a failed/empty pull
-      install -m 0644 "$tmp" {{ zwave_base_dir }}/libeatmydata.so
-    creates: "{{ zwave_base_dir }}/libeatmydata.so"
+      install -m 0644 "$tmp" {{ zwave_base_dir }}/{{ zwave_libeatmydata }}
+    creates: "{{ zwave_base_dir }}/{{ zwave_libeatmydata }}"
+    executable: /bin/bash
   notify: Restart zwave-js
 
 # Because fsync is neutralized, a hard power-loss during the (rare) settings
@@ -93,3 +107,18 @@
       zwave-js could not start -- the ZWA-2 radio is not present:
       {{ zwave_compose_up.stderr_lines | select('search', 'device') | list }}
   when: zwave_compose_up.rc != 0
+
+- name: Find libeatmydata.so builds of other Alpine releases
+  ansible.builtin.find:
+    paths: "{{ zwave_base_dir }}"
+    patterns: "libeatmydata*.so"
+    excludes: "{{ zwave_libeatmydata }}"
+  register: zwave_stale_libeatmydata
+
+- name: Remove libeatmydata.so builds of other Alpine releases
+  ansible.builtin.file:
+    path: "{{ item.path }}"
+    state: absent
+  loop: "{{ zwave_stale_libeatmydata.files }}"
+  loop_control:
+    label: "{{ item.path }}"

ansible/roles/zwave-gateway/templates/docker-compose.yml.j2

@@ -31,7 +31,7 @@ services:
       - "{{ edge_zwave_device }}:/dev/zwave"
     volumes:
       # musl libeatmydata.so extracted from the image's Alpine base (ro)
-      - ./libeatmydata.so:/usr/lib/libeatmydata.so:ro
+      - ./{{ zwave_libeatmydata }}:/usr/lib/libeatmydata.so:ro
       # Persistent store: settings.json, device DB, network keys. Path is
       # unchanged from the previous shared project, so nothing is migrated.
       - ./store:/usr/src/app/store

docs/radius/dot1x.md

@@ -0,0 +1,257 @@
+# 802.1X via authentik
+
+FreeRADIUS terminates EAP-TTLS and proxies the inner PAP request to the
+authentik RADIUS outpost `802.1X Radius`. authentik checks the password and
+the access policy and returns the VLAN.
+
+## Routing by outer identity
+
+FreeRADIUS decides on the outer EAP identity (`User-Name`) of each request,
+before any local EAP processing:
+
+| Outer identity | Path |
+|---|---|
+| `anonymous` or `anonymous@<anything>` (any case) | EAP-TTLS terminated in FreeRADIUS, inner PAP to authentik |
+| anything else | whole EAP conversation (all rounds, `State` included) proxied to the UDM RADIUS for UniFi Endpoint accounts |
+
+UniFi Endpoint clients send their real account name as outer identity; their
+names look like ordinary usernames, so the rule cannot match on name patterns.
+The UDM's Access-Accept/Reject/Challenge goes to the NAS unchanged, including
+its Tunnel-* VLAN and MS-MPPE keys. The "Accept without VLAN is rejected" rule
+applies to the authentik path only. Accounting is answered locally on both
+paths.
+
+The anonymous outer identity is mandatory for authentik clients: without it
+the login goes to the UDM and fails.
+
+UDM target: home server `udm`, `10.2.11.1` UDP 1812 (the UDM on VLAN 11,
+UniFi network "(11) RADIUS"), shared secret `UDM_RADIUS_SECRET` from OpenBao
+`apps/radius`. The UDM RADIUS accepts clients from `10.2.11.0/24` only, not
+from the pod CIDR.
+
+### Path to the UDM
+
+Each FreeRADIUS pod has a second interface `net1` on VLAN 11
+(NetworkAttachmentDefinition `freeradius-udm`,
+`kubernetes/apps/authentik/freeradius-network-attachment.yaml`):
+
+- macvlan on the node link `radius0` (VLAN 11 on `uplink`, no host addresses;
+  VLANConfig in `kubernetes/talos/patches/k8s-{1,2,3}.yaml`). VLAN 11 is in
+  Cilium's `bpf.vlanBypass`, otherwise the tagged frames are dropped on
+  `uplink`.
+- IPv4 leased from the UDM DHCP server (cni-dhcp-daemon), requested without
+  the routers option: `net1` holds only the connected `10.2.11.0/24`, no
+  default route. The proxy socket is not bound to an address; the kernel's
+  route lookup for `10.2.11.1` picks `net1` and its leased address as source.
+- IPv6 disabled on `net1` (VLAN 11 sends router advertisements).
+- The NAS listeners are bound to `eth0` (`interface = eth0`); nothing listens
+  on `net1`.
+- Traffic on `net1` bypasses Cilium; there is no CNP for the UDM hop.
+
+`radius0` must exist on every node before FreeRADIUS pods are scheduled
+there: without it the macvlan ADD fails and the pod stays in
+`ContainerCreating`.
+
+## authentik objects
+
+Defined in `kubernetes/apps/authentik/blueprints-configmap.yaml`, key
+`dot1x-radius.yaml`:
+
+| Object | Name | Purpose |
+|---|---|---|
+| Flow | `dot1x-authentication-flow` | identification, password, login; no MFA, no enrollment |
+| Expression policy | `dot1x-has-vlan` | admits users with a valid `dot1x_vlan` group |
+| RADIUS property mapping | `dot1x-vlan` | puts the VLAN into the Access-Accept |
+| RADIUS provider | `802.1X Radius` | shared secret `DOT1X_OUTPOST_SECRET`, clients = cluster pod CIDRs |
+| Application | `dot1x` | bound to `dot1x-has-vlan` |
+| Outpost | `802.1X Radius` | radius, 2 replicas, ClusterIP, namespace `authentik` |
+
+The outpost's Kubernetes objects are named from the slugified outpost name:
+Service/Deployment `ak-outpost-8021x-radius`, pod label
+`goauthentik.io/outpost-name: 8021x-radius`.
+
+The shared secret is key `DOT1X_OUTPOST_SECRET` of Secret `radius-secrets`
+(ExternalSecret from OpenBao `apps/radius`), passed to the authentik worker
+only (it applies the blueprints) as env `DOT1X_OUTPOST_SECRET`, with
+`optional: true`: a missing Secret fails only the dot1x blueprint, not
+authentik. Reloader restarts the worker when `radius-secrets` changes.
+
+On the FreeRADIUS → outpost hop the shared secret is the only guard: the
+authentik namespace baseline admits all same-namespace pods, and the
+provider's client_networks is the pod CIDR.
+
+FreeRADIUS resolves the outpost Service name at startup; a re-created
+outpost Service needs the FreeRADIUS pods restarted.
+
+## VLAN convention
+
+- A group carries the VLAN as attribute `dot1x_vlan`, an integer VLAN id
+  (1–4094), e.g. `dot1x_vlan: 50`. It must be an unquoted integer: a string
+  such as `"50"` is ignored and the user is denied.
+- Membership counts through group inheritance (`User.all_groups()`).
+- A user without any such group is rejected (policy `dot1x-has-vlan`).
+- A user in several such groups gets the lowest `dot1x_vlan`.
+- The same attribute applies to WiFi and wired 802.1X.
+
+Groups and memberships are managed by the owner in authentik, not in
+blueprints.
+
+## Reply format
+
+The mapping sets both:
+
+- RFC 3580 `Tunnel-Type = VLAN`, `Tunnel-Medium-Type = IEEE-802`,
+  `Tunnel-Private-Group-Id = "<id>"` (raw attribute codes 64, 65, 81; the
+  dictionary bundled with authentik does not define them).
+- `Cisco-AV-Pair = "dot1x-vlan=<id>"`.
+
+Contract for FreeRADIUS: if the outpost reply carries the standard Tunnel-*
+attributes, use them; otherwise translate `Cisco-AV-Pair = "dot1x-vlan=<id>"`
+into `Tunnel-Type = VLAN`, `Tunnel-Medium-Type = IEEE-802`,
+`Tunnel-Private-Group-Id = "<id>"`. An Access-Accept without a VLAN is
+rejected.
+
+## Test-phase entries
+
+The FreeRADIUS clients `test` (10.2.50.0/24) and `test6` (fd02:50::/64) and
+their CIDRs in `freeradius-cnp.yaml` are for the test phase only and must be
+removed after the test.
+
+## UniFi objects
+
+Created through the UniFi Network API (site `default`):
+
+| Object | ID | Settings |
+|---|---|---|
+| Firewall policy "Allow APs RADIUS" | `62c21e63-8c15-4720-adf8-b2333c090e2f` | zone Isolated `10.2.10.0/24` → zone External `10.2.99.91`, UDP `1812-1813`, ALLOW, IPv4 |
+| RADIUS profile "Cluster 802.1X" | `3e5fcfed-63dc-4e7d-ad51-17cbc074e4bb` | auth `10.2.99.91:1812`, acct `10.2.99.91:1813`, secret `DOT1X_NAS_SECRET`, VLAN assignment on (`vlan_wlan_mode: optional`) |
+| WLAN "Renner UniFi" | `ef4122f2-4a83-4dca-9ef3-468d29f39a6b` | WPA3 Enterprise (no transition), PMF required, fast roaming, BSS transition, client isolation off, RADIUS profile "Cluster 802.1X"; Application Hotspot, type Passpoint (set in the UniFi UI: the API format differs from the UI's) |
+
+Passpoint on "Renner UniFi" (UniFi offers Passpoint only with WPA3 Enterprise):
+venue "Renner", Residential / Private Residence, network type Private with
+Guest Access, IPv4 single NATed private, IPv6 available, NAI realm
+`renner.uno` with EAP-TTLS, sub-methods PAP and username/password, domain
+`renner.uno`, operator friendly name "Renner", connection capability ICMP
+allow. The AKMs on air are `FT/802.1X` and `802.1X/SHA-256`; plain `802.1X`
+is not offered.
+
+## Live login check
+
+`tests/radius/live.sh` runs EAP-TTLS/PAP logins with `eapol_test` against the
+deployed FreeRADIUS from a test client range and prints result, duration and
+the VLAN attributes of the Access-Accept (hex) per login; secrets are read from
+files and never printed:
+
+```
+LIVE_PASSWORD_VAR=CLAUDE_BOT_PASSWORD tests/radius/live.sh 10.2.99.91 claude-bot \
+  ~/.config/claude-bot/authentik ~/.config/claude-bot/radius-secret 20
+```
+
+For IPv6 set `LIVE_SOURCE` to the workstation's `fd02:50::` address and use
+`fd99::91`. `group-id=[3530]` is VLAN `50`, `tunnel-type=[0000000d]` VLAN,
+`medium=[00000006]` IEEE-802.
+
+## Client setup (SSID "Renner UniFi")
+
+Setup page: `https://wlan.renner.uno` (behind the Authentik gate, any
+authentik user; `kubernetes/apps/authentik/wlan-setup*.yaml`). Android and
+Apple get Passpoint profiles with their own app password; Windows gets a file
+that imports the WLAN profile with `netsh`, Linux an `nmcli` command
+(NetworkManager has no Passpoint support). The Windows and Linux setups carry
+no password.
+
+Passpoint (Android, Apple): `/<platform>/install` (`android` or `apple`) signs
+the user in through the authentik OAuth2 application `wlan-setup` (scope
+`goauthentik.io/api`). On `/<platform>/callback`, nginx (njs) exchanges the
+code, creates an app password (`wlan-<platform>-<user>-<timestamp>-<random>`)
+with the user's own access token, and returns the profile in the response to
+that GET: Android `application/x-wifi-config` (as its installer requires),
+Apple a `.mobileconfig`. The page stores nothing. Deleting the app password in
+authentik removes that device from the WLAN. The profiles match WLANs that
+advertise Hotspot 2.0 with domain and NAI realm `renner.uno` (EAP-TTLS/PAP),
+i.e. "Renner UniFi". Creating the app password needs no admin rights.
+
+App passwords expire when unused. The page creates them with 29 days (the API
+caps new tokens at 30 days unless the group attribute
+`goauthentik.io/user/token-maximum-lifetime` allows more). Every 802.1X login
+with an app password renews it to 60 days: the policy
+`dot1x-app-password-renew` on the `dot1x-login` binding (at most one write per
+day). authentik rejects expired app passwords and deletes them in its
+`clean_expired_models` task. A device that has not connected for 60 days, or a
+profile that was never installed, loses its app password and needs a new
+profile from the page.
+
+All clients use EAP-TTLS with inner PAP. The server certificate is a public
+Let's Encrypt certificate for `radius.renner.uno`, so no CA needs to be
+installed. The 802.1X password stage (`dot1x-password`) accepts the authentik
+password and app passwords. PAP runs inside the TLS tunnel to FreeRADIUS and
+is never sent in clear over the air.
+
+### Android
+
+Passpoint profile from the setup page ("Auf Android installieren").
+
+### Linux (NetworkManager)
+
+- Security: WPA & WPA2/3 Enterprise
+- Authentication: Tunneled TLS (TTLS)
+- Inner authentication: PAP
+- CA certificate: system bundle (e.g. `/etc/ssl/certs/ca-certificates.crt`)
+- Domain: `radius.renner.uno`
+- Anonymous identity: `anonymous` (mandatory)
+- Username / password: authentik credentials
+
+### Windows 11
+
+Settings > Network & Internet > Wi-Fi > Manage known networks > Add network:
+
+- Network name: `Renner UniFi`
+- Security type: WPA3-Enterprise AES
+- EAP method: EAP-TTLS
+- Authentication method: Unencrypted password (PAP)
+- Server validation: where offered ("Verify server identity" / trusted
+  server name), set `radius.renner.uno`
+- Do not use Windows sign-in credentials; enter the authentik credentials
+
+On the first join, check the certificate details before connecting: it must
+be issued to `radius.renner.uno` by Let's Encrypt. Otherwise cancel.
+
+If EAP-TTLS is not offered, use Control Panel > "Manually connect to a
+wireless network" instead.
+
+### Apple (iOS, iPadOS, macOS)
+
+Passpoint configuration profile from the setup page ("Profil laden"),
+installed via Settings (Profile Downloaded) or, on a Mac, System Settings >
+General > Device Management. It sets `IsHotspot` with domain and NAI realm
+`renner.uno` (no SSID), security type Any, outer identity `anonymous`,
+trusted server name `radius.renner.uno`, username and app password; it
+contains no certificate. Its PayloadIdentifier is fixed, so installing it
+replaces an earlier profile. Apple devices may show a one-time "trust
+certificate" prompt for `radius.renner.uno` on the first join.
+
+## Measurement: authentication latency per SSID
+
+The UniFi access points log station events (`stahtd`) to Loki. The field
+`radius_auth_delta` (microseconds) is in a JSON payload after
+`stahtd_dump_event(): `.
+
+VAP names per SSID are looked up through the UniFi API: `stat/device`,
+`vap_table`, map `essid` to `name`.
+
+The JSON mixes `"key":"v"` and `"key": "v"`, so the filters tolerate an
+optional space. Values are microseconds. Run once per VAP of "Renner Test" and
+of "Renner UniFi" and compare avg and max:
+
+```
+logcli instant-query --quiet \
+  'avg_over_time({source="unifi-syslog",app="stahtd"} |~ "\"vap\": ?\"<vap>\"" | regexp "radius_auth_delta\": ?\"?(?P<d>[0-9]+)" | unwrap d [24h])'
+
+logcli instant-query --quiet \
+  'max_over_time({source="unifi-syslog",app="stahtd"} |~ "\"vap\": ?\"<vap>\"" | regexp "radius_auth_delta\": ?\"?(?P<d>[0-9]+)" | unwrap d [24h])'
+```
+
+| SSID | VAP(s) | Events | avg radius_auth_delta (us) | max radius_auth_delta (us) |
+|---|---|---|---|---|
+| Renner Test | | | | |
+| Renner UniFi | | | | |

docs/superpowers/plans/2026-11-03-dot1x-radius-authentik.md

@@ -0,0 +1,123 @@
+# 802.1X RADIUS via authentik — Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** In-cluster FreeRADIUS that terminates EAP-TTLS/PAP for 802.1X and checks the password against a dedicated authentik RADIUS outpost, live behind a test SSID "Renner Test".
+
+**Architecture:** FreeRADIUS (own Deployment, 2 replicas, LB `10.2.99.91`/`fd99::91`, Let's Encrypt cert `radius.renner.uno`) terminates EAP-TTLS, proxies the inner PAP request to a new blueprint-managed authentik RADIUS outpost "802.1X Radius" (2 replicas) whose provider returns the VLAN from the group attribute `dot1x_vlan`. UniFi gets a RADIUS profile, a test WLAN and a firewall policy via the UDM API.
+
+**Tech Stack:** Flux/Kustomize manifests, authentik 2026.8 blueprints, `freeradius/freeradius-server:3.2.10-alpine`, cert-manager, External Secrets (OpenBao), Cilium LB-IPAM/BGP + CNP, UniFi Network API, `eapol_test` (workstation `/usr/bin/eapol_test`).
+
+**Spec:** `docs/superpowers/specs/2026-11-03-wifi-radius-authentik-design.md`
+
+## Global Constraints
+
+- Work only in this worktree; commits as `git -c user.name='Claude Bot' -c user.email='claude-bot@renner.uno' commit …`; never push to `main`, open a PR, never self-merge.
+- Never read Kubernetes Secret data; never print secret values; credentials only via env var on the local command (`VAR="$SECRET" tool`), never inside a string another program interprets.
+- authentik users/groups are created by the owner, not in blueprints.
+- Group attribute name: `dot1x_vlan` (integer). Test VLAN: `50`.
+- LB: `lbipam.cilium.io/ips: "10.2.99.91,fd99::91"`, label `lb-pool: bgp`, `externalTrafficPolicy: Local`, `ipFamilyPolicy: PreferDualStack`.
+- Hostname/cert: `radius.renner.uno`, ClusterIssuer `letsencrypt-cluster`.
+- RADIUS clients: `10.2.10.0/24` (APs/switches). Test client: workstation network `10.2.50.0/24` with its own secret (test phase only).
+- Existing "Unifi Radius" provider and "Local Radius" outpost: untouched.
+- Main WLANs "Renner UniFi", "Renner IoT", "Renner Gast": untouched.
+- Resource convention: requests set, memory limit only, no CPU limit; `allowPrivilegeEscalation: false`, `capabilities.drop: [ALL]`.
+- New manifests must be listed in `kubernetes/apps/authentik/kustomization.yaml`.
+
+## Review Focus
+
+- User not in any `dot1x_vlan` group → must get Access-Reject, never an Accept without VLAN (would land in the Guest fallback).
+- Wrong password → Access-Reject within < 1 s, no retry storm between FreeRADIUS and outpost.
+- Outpost reject packets lack `Message-Authenticator` (upstream behaviour) → FreeRADIUS must still forward a Reject to the AP, not time out.
+- One FreeRADIUS replica or one outpost replica down → logins keep working (Service routes to the other).
+- Accounting packets from APs (UDP 1813) → answered locally, never forwarded to the outpost (which has no 1813).
+
+---
+
+### Task 1: Secrets and server certificate
+
+**Files:**
+- Create: `kubernetes/apps/authentik/radius-cert.yaml`
+- Modify: `kubernetes/apps/authentik/kustomization.yaml`
+
+**Interfaces:**
+- Produces: Secret `radius-tls` (keys `tls.crt`, `tls.key`); OpenBao `apps/authentik` keys `DOT1X_OUTPOST_SECRET`, `DOT1X_NAS_SECRET`, `DOT1X_TEST_SECRET` (reach the cluster as keys of the existing Secret `authentik-secrets` via `externalsecret.yaml`).
+
+- [ ] **Step 1:** Generate three secrets (`openssl rand -base64 48`, piped straight into `bao kv patch apps/authentik DOT1X_OUTPOST_SECRET=- …` without echoing) — if claude-bot's OpenBao policy cannot write `apps/authentik`, stop and hand the exact `bao kv patch` command to the owner.
+- [ ] **Step 2:** Verify key names only: `bao kv get -format=json apps/authentik | jq -r '.data.data | keys[]' | grep DOT1X` → three names.
+- [ ] **Step 3:** Write `radius-cert.yaml` (Certificate `radius-tls`, secretName `radius-tls`, dnsNames `[radius.renner.uno]`, issuerRef `letsencrypt-cluster`/ClusterIssuer), add to kustomization.
+- [ ] **Step 4:** `kubectl kustomize kubernetes/apps/authentik >/dev/null` → exit 0; `kubectl apply --dry-run=server -f kubernetes/apps/authentik/radius-cert.yaml` → `created (server dry run)`.
+- [ ] **Step 5:** Commit `feat(radius): server certificate for radius.renner.uno`.
+
+### Task 2: authentik provider, VLAN mapping and outpost
+
+**Files:**
+- Modify: `kubernetes/apps/authentik/blueprints-configmap.yaml` (new key `dot1x-radius.yaml`)
+- Modify: `kubernetes/apps/authentik/helmrelease.yaml` (worker env `DOT1X_OUTPOST_SECRET` from `authentik-secrets`, only if blueprints cannot already read it via `!Env`)
+- Create: `docs/radius/dot1x.md` (owner steps + conventions)
+
+**Interfaces:**
+- Consumes: `DOT1X_OUTPOST_SECRET` (Task 1).
+- Produces: outpost "802.1X Radius" → operator Service `ak-outpost-802-1x-radius` (ClusterIP, UDP 1812), pod labels `goauthentik.io/outpost-name: 802-1x-radius`; provider "802.1X Radius" with `client_networks` = cluster pod CIDRs (read from `kubectl get nodes -o jsonpath` podCIDRs / Cilium config, not guessed); reply carries the VLAN either as standard `Tunnel-Type`/`Tunnel-Medium-Type`/`Tunnel-Private-Group-Id` or, fallback, as `Cisco-AV-Pair = "dot1x-vlan=<id>"`.
+
+- [ ] **Step 1: Blueprint objects** — expression policy `dot1x-has-vlan` (`return any(g.attributes.get("dot1x_vlan") for g in request.user.ak_groups.all())`), RADIUS property mapping `dot1x-vlan` (lowest numeric `dot1x_vlan` across the user's groups wins), provider "802.1X Radius" (`authorization_flow: ldap-authentication-flow` after Step 2 confirms it is non-interactive, `invalidation_flow: default-invalidation-flow`, `mfa_support: false`, `shared_secret: !Env DOT1X_OUTPOST_SECRET`, `property_mappings: [dot1x-vlan]`), application slug `dot1x` bound to `dot1x-has-vlan`, outpost "802.1X Radius" (type radius, `k8s-conn`, namespace `authentik`, `kubernetes_replicas: 2`, `kubernetes_service_type: ClusterIP`, providers: only "802.1X Radius").
+- [ ] **Step 2:** Confirm `ldap-authentication-flow` contains only identification + password stages (authentik API/UI read); if not, add a blueprint flow `dot1x-authentication-flow` with exactly those two stages and use it.
+- [ ] **Step 3:** Owner step (documented in `docs/radius/dot1x.md`, asked of the owner during execution): create group `802.1X Privat` with attribute `dot1x_vlan: 50`, add the owner and a test user `dot1x-test`.
+- [ ] **Step 4:** After merge + reconcile: `kubectl -n authentik get deploy ak-outpost-802-1x-radius -o json | jq .status.readyReplicas` → `2`.
+- [ ] **Step 5: VLAN attribute spike** — from a throwaway pod in `authentik` (`kubectl run radtest --rm -i --image=freeradius/freeradius-server:3.2.10-alpine --command -- radtest dot1x-test "$PW" ak-outpost-802-1x-radius 0 "$SECRET"` with values passed via `--env`, not in the string) expect `Access-Accept` containing `Tunnel-Private-Group-Id = "50"`. If the outpost cannot emit standard Tunnel attributes, switch the mapping to the `Cisco-AV-Pair` fallback and expect `Cisco-AV-Pair = "dot1x-vlan=50"`. Record which one in `docs/radius/dot1x.md`.
+- [ ] **Step 6:** Same with a user outside any `dot1x_vlan` group and with a wrong password → `Access-Reject` (< 1 s).
+- [ ] **Step 7:** Commit `feat(authentik): 802.1X RADIUS provider, VLAN mapping and outpost`.
+
+### Task 3: FreeRADIUS service
+
+**Files:**
+- Create: `kubernetes/apps/authentik/freeradius-config.yaml` (ConfigMap: `radiusd.conf`, `clients.conf`, `proxy.conf`, `mods-enabled/eap`, `sites-enabled/default`, `sites-enabled/inner-tunnel`)
+- Create: `kubernetes/apps/authentik/freeradius.yaml` (Deployment + Service `radius-lb`)
+- Create: `kubernetes/apps/authentik/freeradius-cnp.yaml`
+- Create: `kubernetes/infrastructure/image-automation/freeradius.yaml`; modify its `kustomization.yaml`
+- Modify: `kubernetes/apps/authentik/kustomization.yaml`
+
+**Interfaces:**
+- Consumes: `radius-tls`, `authentik-secrets` keys `DOT1X_NAS_SECRET`, `DOT1X_TEST_SECRET`, `DOT1X_OUTPOST_SECRET`; outpost Service `ak-outpost-802-1x-radius:1812/UDP`; reply VLAN format from Task 2.
+- Produces: `radius.renner.uno` → `10.2.99.91`/`fd99::91`, UDP 1812/1813.
+
+- [ ] **Step 1: Config** — `clients.conf`: client `aps` `10.2.10.0/24` secret `$ENV{DOT1X_NAS_SECRET}`, client `test` `10.2.50.0/24` secret `$ENV{DOT1X_TEST_SECRET}`, both `require_message_authenticator = yes`. `eap`: `default_eap_type = ttls`, TLS from `/etc/raddb/certs/radius-tls/{tls.crt,tls.key}`, `ttls { virtual_server = inner-tunnel, use_tunneled_reply = yes }`; no PEAP/MSCHAP. `inner-tunnel`: PAP proxied to home server `authentik` (`ak-outpost-802-1x-radius.authentik.svc.cluster.local:1812`, secret `$ENV{DOT1X_OUTPOST_SECRET}`, `response_window = 3`, do not require Message-Authenticator on its rejects). `default` post-auth: if the Cisco-AV-Pair fallback is in use, translate `dot1x-vlan=<id>` into `Tunnel-Type := VLAN`, `Tunnel-Medium-Type := IEEE-802`, `Tunnel-Private-Group-Id := <id>`; reject an Accept that carries no VLAN. Accounting: answer locally, `detail`-free.
+- [ ] **Step 2: Deployment** — image `freeradius/freeradius-server:3.2.10-alpine # {"$imagepolicy": "flux-system:freeradius"}`, args `-f -l stdout`, 2 replicas, `podAntiAffinity` required on `kubernetes.io/hostname`, env from the three secret keys (`secretKeyRef`, not `envFrom`), mounts ConfigMap + `radius-tls`, readiness/liveness via `radclient` Status-Server on 127.0.0.1 or a TCP-less exec check, requests `cpu 20m / memory 64Mi`, limit `memory 256Mi`, `stakater.com/auto: "true"` like other apps. Service `radius-lb` per Global Constraints, ports 1812/1813 UDP, annotation `external-dns.kubernetes.io/hostname: radius.renner.uno`.
+- [ ] **Step 3: CNPs** — ingress to FreeRADIUS pods from `10.2.10.0/24` and `10.2.50.0/24` UDP 1812/1813; ingress to pods `goauthentik.io/outpost-name: 802-1x-radius` UDP 1812 only from FreeRADIUS pods (model on `ldap-outpost-cnp.yaml`, use container ports).
+- [ ] **Step 4: Image automation** — `ImageRepository freeradius` (`docker.io/freeradius/freeradius-server`), `ImagePolicy freeradius` with `filterTags.pattern: '^(?P<v>3\.2\.\d+)-alpine$'`, `extract: '$v'`, `semver.range: "3.2.x"`.
+- [ ] **Step 5:** `kubectl kustomize kubernetes/apps/authentik >/dev/null` and `kubectl apply --dry-run=server` on the new files → no errors.
+- [ ] **Step 6:** After merge + reconcile: `kubectl -n authentik get deploy freeradius -o json | jq .status.readyReplicas` → `2`; `kubectl -n authentik get svc radius-lb -o json | jq -r '.status.loadBalancer.ingress[].ip'` → `10.2.99.91` and `fd99::91`.
+- [ ] **Step 7: End-to-end from the workstation** — `eapol_test` config (TTLS, phase2 `auth=PAP`, `ca_cert` system bundle, `domain_suffix_match="radius.renner.uno"`, identity `dot1x-test`) run as `DOT1X_TEST_SECRET=… eapol_test -c ttls.conf -a 10.2.99.91 -s "$DOT1X_TEST_SECRET"` with the password supplied from an env var into the config file in the scratchpad (file deleted afterwards) → `SUCCESS`, `Tunnel-Private-Group-Id` `50` in the output; same with wrong password → `FAILURE` in < 1 s; user without group → `FAILURE`.
+- [ ] **Step 8: Redundancy check without touching live pods** — confirm both FreeRADIUS replicas and both outpost replicas serve: `kubectl -n authentik get pods -l app.kubernetes.io/name=freeradius -o wide` shows two different nodes; loop `eapol_test` 20× → 20× `SUCCESS` and both pods log requests (`kubectl logs`). No rollout restart or pod deletion (house rule).
+- [ ] **Step 9: Alert** — add rules to `kubernetes/apps/monitoring-rules/` (follow the existing rule files there): `kube_deployment_status_replicas_available{namespace="authentik",deployment=~"freeradius|ak-outpost-802-1x-radius"} < 1` for 2m → critical; `< 2` for 15m → warning. Verify `kubectl kustomize kubernetes/apps/monitoring-rules >/dev/null`.
+- [ ] **Step 10:** Commit `feat(radius): FreeRADIUS EAP-TTLS frontend for authentik`.
+
+### Task 4: UniFi RADIUS profile, test WLAN, firewall policy
+
+**Files:**
+- Modify: `docs/radius/dot1x.md` (record created objects, IDs, settings)
+
+**Interfaces:**
+- Consumes: `radius.renner.uno`/`10.2.99.91`, `DOT1X_NAS_SECRET`.
+- Produces: UniFi RADIUS profile "Cluster 802.1X" (auth `10.2.99.91:1812`, acct `10.2.99.91:1813`, VLAN assignment enabled), WLAN "Renner Test", firewall policy "Allow APs RADIUS".
+
+- [ ] **Step 1:** POST firewall policy (clone of "Allow APs syslog to Loki": source zone Isolated IP `10.2.10.0/24`, destination zone External IP `10.2.99.91`, UDP, ports `1812-1813`, ALLOW) via `/proxy/network/v2/api/site/default/firewall-policies`; verify it is listed.
+- [ ] **Step 2:** Create RADIUS profile via `/proxy/network/api/s/default/rest/radiusprofile` (secret passed from env into a JSON file in the scratchpad, never on the command line); verify listed.
+- [ ] **Step 3:** Create WLAN "Renner Test" via `/rest/wlanconf` cloned from "Renner UniFi" settings (security `wpaeap`, `wpa3_support`/`wpa3_transition` as main, `fast_roaming_enabled: true`, `bss_transition: true`, same `ap_group_ids`, `networkconf_id` (90) Guest as fallback) with the new `radiusprofile_id`; verify all APs broadcast it (`stat/device` vap_table essid).
+- [ ] **Step 4:** Owner joins one Android device; verify in Loki stahtd `success` with `radius_auth_delta` and `vlan 50` in `stat/sta`.
+- [ ] **Step 5:** Commit `docs(radius): document UniFi objects for the 802.1X test`.
+
+### Task 5: Client configuration aids and measurement
+
+**Files:**
+- Create: `docs/radius/clients/renner-test.mobileconfig` (no password; EAP-TTLS, `TTLSInnerAuthentication: PAP`, `TLSTrustedServerNames: [radius.renner.uno]`)
+- Modify: `docs/radius/dot1x.md` (Android/Linux/Windows steps; LogQL for `radius_auth_delta` per SSID; result table)
+
+- [ ] **Step 1:** Write the profile; validate `plutil -lint`-equivalent: `xmllint --noout docs/radius/clients/renner-test.mobileconfig` → no output.
+- [ ] **Step 2:** Document the comparison query (stahtd events, `radius_auth_delta`, grouped by VAP of "Renner Test" vs. "Renner UniFi") and run it once the owner's devices have joined; record avg/max.
+- [ ] **Step 3:** Commit `docs(radius): client setup and measurement for the 802.1X test`.
+
+### Task 6: PR
+
+- [ ] **Step 1:** Push branch with claude-bot credentials; open PR via `tea pr create --login claude-bot` (description = the change; no session status).
+- [ ] **Step 2:** Verify with `tea pr list --login claude-bot --state open`.

docs/superpowers/specs/2026-11-03-wifi-radius-authentik-design.md

@@ -0,0 +1,228 @@
+# 802.1X via authentik: in-cluster RADIUS (first test on a test SSID)
+
+Date: 2026-11-03
+
+## Intent
+
+Full 802.1X logins on the main WLAN "Renner UniFi" spend 1.3–6 s in RADIUS
+(avg ~2 s, every login >1 s; 0.23–0.43 s per RADIUS round trip). The RADIUS
+server is the UDM's built-in FreeRADIUS, which runs Ubiquiti's
+`/usr/sbin/pyauth_log.py` in authorize/authenticate/post-auth and spawns
+`mca-ctrl` synchronously for every RADIUS packet. Every failed fast roam,
+every arrival at home and every band change pays that cost. The owner has
+been unhappy with the UDM RADIUS performance for a while.
+
+This project stands up an in-cluster RADIUS whose password check and group
+membership come from authentik, and puts it behind a **separate test SSID**.
+The owner moves some of his own devices to it. If RADIUS time per login is
+significantly better, a solution for the rest of the household follows in a
+later project.
+
+## Goals
+
+- In-cluster RADIUS for **802.1X in general** (WiFi and wired switch ports;
+  owner: "802.1x ist das was relevant ist") that authenticates users with
+  their **authentik username and password** (central credentials; a password
+  change in authentik applies immediately).
+- Password verification **by authentik itself** via the authentik RADIUS
+  outpost (owner decision).
+- **VLAN per user from authentik groups.**
+- Must work with **every client OS** (Android, iOS/iPadOS, macOS, Windows,
+  Linux).
+- Client setup as automatic as possible; no client certificates, no private
+  CA. A device configured once should carry the credentials to new devices
+  through platform sync where the platform does so.
+- A test SSID that points only at the new RADIUS; measurable result.
+
+## Non-goals
+
+- Migrating "Renner UniFi" or the UniFi Endpoint-provisioned accounts. The main
+  WLAN keeps using the UDM RADIUS unchanged.
+- VPN authentication (OpenVPN "Renner SSL VPN" also uses the UDM RADIUS
+  profile; out of scope).
+- Enabling 802.1X on switch ports in this project (no port has it today); the
+  server must be ready for it (switches as RADIUS clients); the first test is
+  the test SSID.
+- An onboarding page that hands out Apple/Windows profiles — owner: leave it
+  out for the test (likely follow-up).
+- RADIUS accounting (authentik supports authentication requests only).
+- MFA for 802.1X.
+
+## Anti-goals (a failure even if it technically works)
+
+- Anything that changes behaviour of the existing "Renner UniFi", "Renner IoT"
+  or "Renner Gast" WLANs or breaks the UniFi Endpoint app.
+- Client certificates (EAP-TLS) — owner: without central device management
+  unacceptable fiddling.
+- NT hashes (PEAP-MSCHAPv2 via `sambaNTPassword` from authentik-samba-bridge)
+  — rejected by the owner: weak password-equivalent MD4 hash stored and
+  exposed, and dependency on the samba-bridge fork.
+- A private CA that every client has to trust.
+- Copying Ubiquiti's RADIUS certificate/private key off the UDM.
+
+## Constraints and facts
+
+- authentik RADIUS provider (outpost image `ghcr.io/goauthentik/radius:2026.8.4`)
+  supports **PAP** and **EAP-TLS** only (no PEAP/MSCHAPv2, no EAP-TTLS);
+  custom reply attributes via RADIUS property mappings (since 2024.8);
+  authentication requests only (docs.goauthentik.io, RADIUS provider). It
+  speaks plain RADIUS (no RadSec).
+- APs/switches speak EAP, so an EAP server must terminate the outer method:
+  FreeRADIUS terminates **EAP-TTLS** and forwards the **inner PAP** request to
+  the authentik RADIUS outpost.
+- Client OS support for EAP-TTLS/PAP (vendor docs: IronWiFi, JumpCloud,
+  Fortinet, Meraki; no Apple statement found):
+  - Android, Linux: normal join dialog (EAP method TTLS, phase 2 PAP,
+    identity/password, CA "system certificates", domain).
+  - Windows 11: no file needed, but via "add network manually": EAP-TTLS,
+    "Unencrypted password (PAP)" (Control Panel route if Settings lacks it).
+  - iOS/iPadOS/macOS: requires a configuration profile (inner auth PAP is
+    only selectable in a profile). For the test the profile is built and
+    installed by hand.
+- authentik does not support EAP (maintainer, goauthentik/authentik#15498);
+  MSCHAPv2/PEAP will not be implemented (reversible password storage);
+  EAP-TLS needs the MTLS stage (enterprise-licensed per community project
+  wus-technik/authentik-freeradius). FreeRADIUS in front of the outpost is
+  the established pattern. Owner decision (2026-11-03): **FreeRADIUS as its
+  own service** — the alternatives (FreeRADIUS as sidecar in the outpost pod,
+  keeping the UDM RADIUS, another IdP) were rejected.
+- Known outpost issues with `Message-Authenticator` (goauthentik/authentik
+  #17901, #22931: packets dropped as "invalid message authenticator"). The
+  builder must test the FreeRADIUS → outpost hop with Message-Authenticator
+  early and document the working combination.
+- **The FreeRADIUS → authentik outpost hop is plain RADIUS**: the password is
+  only obfuscated with the shared secret (RFC 2865 MD5 hiding). Cilium has no
+  transparent encryption enabled (no WireGuard/IPsec in `cilium-config`).
+  The owner chose this path over LDAPS bind (2026-11-03). Mitigations below.
+- Existing objects: RADIUS provider "Unifi Radius" (exists in the authentik
+  DB, only referenced by `!Find` in
+  `kubernetes/apps/authentik/blueprints-configmap.yaml`) and outpost
+  "Local Radius" (`ak-outpost-local-radius`, ClusterIP, 1 replica, namespace
+  `authentik`). What currently uses "Unifi Radius" is unknown; it must not
+  break.
+- authentik users and groups are created by the owner in authentik, not in
+  blueprints. Designs read a convention.
+- APs (and switches) send RADIUS from the management network VLAN 10
+  (`10.2.10.0/24`). VLAN 10 is dual-stack, `10.2.10.0/24` and
+  `fd02:10::/64` (verified live: all APs/switches have fd02:10:: addresses).
+- LB services: pool `bgp-pool` (10.2.99.0/24, fd99::/64, label `lb-pool: bgp`,
+  `kubernetes/infrastructure/post-crds/cilium-bgp.yaml`), pinned IPs with the
+  same last byte in both families (`lbipam.cilium.io/ips`),
+  `externalTrafficPolicy: Local` (preserves the AP source IP),
+  `ipFamilyPolicy: PreferDualStack`. Live in use: .81–.90.
+- UDM firewall: the LB range 10.2.99.0/24 is in the UDM "External" zone; the
+  existing policy "Allow APs syslog to Loki" (Isolated 10.2.10.0/24 → External
+  10.2.99.84 UDP 5514) is the template. Firewall policies and WLANs are not in
+  OpenTofu today (UI/API only; the UDM API key is available to the builder).
+- House patterns: cert-manager `Certificate` with ClusterIssuer
+  `letsencrypt-cluster` (Cloudflare DNS-01), as `ldap-outpost-cert.yaml`;
+  secrets via External Secrets Operator from OpenBao (`ClusterSecretStore
+  openbao`, key `apps/<app>`, Reloader restarts pods); DNS via
+  `external-dns.kubernetes.io/hostname` on the Service (UDM split-horizon);
+  additive CNP for LAN ingress like `ldap-outpost-cnp.yaml`; namespace
+  baseline `infrastructure/network-policies/authentik-ns.yaml`.
+
+## Design (decided)
+
+### Authentication path
+
+```
+client --EAP-TTLS (outer TLS to FreeRADIUS, cert radius.renner.uno), inner PAP--> AP / switch
+AP/switch --RADIUS UDP 1812--> FreeRADIUS (in cluster, LB 10.2.99.91)
+FreeRADIUS (inner tunnel) --RADIUS PAP--> authentik RADIUS outpost (in cluster)
+   <-- Access-Accept + VLAN attributes (authentik property mapping) --
+FreeRADIUS --Access-Accept + Tunnel attrs (copied from inner reply)--> AP/switch
+```
+
+- Owner decision: username + **authentik password** (central credentials).
+- Owner decision: password check **directly by the authentik RADIUS outpost**.
+- Owner decision: **separate test SSID**; test devices are the owner's own,
+  across all OSes, and must keep working normally.
+- Owner decision: client certificates and NT hashes are out.
+- Success threshold (proposed by me, accepted by the owner): RADIUS time per
+  full login **< 0.5 s** vs. ~2 s today — a data point for the follow-up
+  decision, not a hard pass/fail gate.
+
+### Protecting the FreeRADIUS → outpost hop (my calls)
+
+- CNP so the RADIUS outpost accepts RADIUS only from the FreeRADIUS pods.
+- Long random shared secret for this hop (OpenBao).
+- Require and send `Message-Authenticator` on both hops (BlastRADIUS).
+
+### Server certificate
+
+Public Let's Encrypt certificate for `radius.renner.uno` via cert-manager
+(renewed automatically). Android/Linux validate with system certificates +
+domain `radius.renner.uno`; Apple via the profile (CA/server name in the
+profile); Windows shows the certificate on first join. No private CA.
+(My call on the hostname.) The builder verifies and documents what clients do
+after a certificate renewal (Windows may prompt again).
+
+### VLAN from groups (convention, my call)
+
+A group that grants 802.1X access (WiFi and wired) carries the group
+attribute `dot1x_vlan` (integer VLAN ID, e.g. `50`). An authentik RADIUS
+property mapping returns `Tunnel-Type = VLAN (13)`,
+`Tunnel-Medium-Type = IEEE-802 (6)`, `Tunnel-Private-Group-Id = <dot1x_vlan>`.
+A user without any group carrying `dot1x_vlan` is rejected. If a user has
+several, the builder picks a deterministic rule and documents it. The owner
+creates the groups and memberships in authentik; for the test the owner's
+group maps to VLAN 50 ((50) Privat), like his current UDM account.
+
+### authentik side (my calls)
+
+- A dedicated RADIUS provider for 802.1X (blueprint-managed), with the VLAN
+  property mapping and a non-interactive authentication flow, attached to an
+  outpost with **2 replicas**. Whether that is the existing "Local Radius"
+  outpost or a new one is the builder's call, after finding out what uses
+  "Unifi Radius" today; nothing that already uses it may break.
+- The provider's allowed client network: the FreeRADIUS pods only.
+
+### Test SSID (my calls)
+
+- Name: "Renner Test".
+- WPA2/WPA3-Enterprise like "Renner UniFi", Fast Roaming on, BSS transition on,
+  same bands. Fallback network for unassigned clients: same as "Renner UniFi"
+  ((90) Guest).
+- RADIUS profile with **only** the cluster RADIUS (no UDM fallback), so the
+  measurement shows the real performance.
+
+### Placement and exposure (my calls)
+
+- FreeRADIUS in namespace `authentik`, files under `kubernetes/apps/authentik/`
+  (no new Flux Kustomization; egress to the outpost is already allowed by the
+  namespace baseline). **2 replicas on different nodes.**
+- LB Service `radius-lb`, IPs `10.2.99.91,fd99::91`, UDP 1812 (+1813 so APs
+  don't wait on accounting), `external-dns` hostname `radius.renner.uno`.
+- Additive CNP: ingress from `10.2.10.0/24` to the FreeRADIUS pods, UDP
+  1812/1813.
+- RADIUS clients in FreeRADIUS: APs and switches (`10.2.10.0/24`).
+- Secrets (AP/switch↔FreeRADIUS, FreeRADIUS↔outpost) in OpenBao `apps/radius`.
+- UDM firewall policy "Allow APs RADIUS": Isolated `10.2.10.0/24` → External
+  `10.2.99.91` UDP 1812/1813, modelled on "Allow APs syslog to Loki".
+- Accounting: FreeRADIUS accepts and discards.
+
+### Measurement and test
+
+- stahtd `STA_ASSOC_TRACKER` events in Loki (`{source="unifi-syslog",
+  app="stahtd"}`) carry `radius_auth_delta` (µs) per full login, end to end as
+  seen by the AP (including the authentik check). Compare the test SSID's VAPs
+  against "Renner UniFi" over the test period.
+- Test matrix: the owner's devices — Android, iOS/iPadOS, macOS (with
+  hand-made profile), Windows, Linux — join "Renner Test"; each must connect,
+  land in VLAN 50, survive fast roaming between APs, and keep working
+  normally.
+
+## Left to the builder
+
+- FreeRADIUS image/version and configuration details (EAP-TTLS module,
+  inner-tunnel proxying of PAP to the outpost, copying inner reply
+  attributes / `use_tunneled_reply`, Message-Authenticator settings, TLS
+  settings), resource requests/limits.
+- The authentik flow used for RADIUS password checks (must not require
+  interactive stages) and the exact property-mapping code.
+- How the UniFi RADIUS profile, test WLAN and firewall policy are created
+  (UniFi API vs. OpenTofu); if not IaC, document them.
+- The Apple profile for the test (`.mobileconfig` with TTLS/PAP, server name
+  `radius.renner.uno`), and the Windows manual steps.
+- Verification steps and monitoring (metrics, alert on RADIUS unreachable).

kubernetes/apps/authentik/blueprints-configmap.yaml

@@ -1447,3 +1447,267 @@ data:
           stage: !KeyOf sso-passkey-validation
           order: 30
         state: present
+
+  # 802.1X: FreeRADIUS terminates EAP-TTLS and proxies inner PAP to the
+  # "802.1X Radius" outpost. VLAN from group attribute dot1x_vlan; see
+  # docs/radius/dot1x.md.
+  dot1x-radius.yaml: |
+    version: 1
+    metadata:
+      name: 802.1X RADIUS (homelab)
+    entries:
+      # Non-interactive: identification, password, login. No MFA.
+      - id: dot1x-flow
+        model: authentik_flows.flow
+        identifiers:
+          slug: dot1x-authentication-flow
+        state: present
+        attrs:
+          name: 802.1X authentication
+          title: "802.1X"
+          designation: authentication
+
+      - id: dot1x-identification
+        model: authentik_stages_identification.identificationstage
+        identifiers:
+          name: dot1x-identification
+        state: present
+        attrs:
+          user_fields:
+            - username
+            - email
+
+      - id: dot1x-password
+        model: authentik_stages_password.passwordstage
+        identifiers:
+          name: dot1x-password
+        state: present
+        attrs:
+          # App passwords: the WLAN credential that devices store (Android
+          # Passpoint profiles carry it), created by wlan.renner.uno.
+          backends:
+            - authentik.core.auth.InbuiltBackend
+            - authentik.core.auth.TokenBackend
+
+      - id: dot1x-login
+        model: authentik_stages_user_login.userloginstage
+        identifiers:
+          name: dot1x-login
+        state: present
+
+      - model: authentik_flows.flowstagebinding
+        identifiers:
+          target: !KeyOf dot1x-flow
+          stage: !KeyOf dot1x-identification
+          order: 10
+        state: present
+
+      - model: authentik_flows.flowstagebinding
+        identifiers:
+          target: !KeyOf dot1x-flow
+          stage: !KeyOf dot1x-password
+          order: 20
+        state: present
+
+      - id: binding-dot1x-login
+        model: authentik_flows.flowstagebinding
+        identifiers:
+          target: !KeyOf dot1x-flow
+          stage: !KeyOf dot1x-login
+          order: 100
+        state: present
+        attrs:
+          evaluate_on_plan: false
+          re_evaluate_policies: true
+
+      # Sliding expiry: an app password used for 802.1X expires 60 days
+      # after its last use; authentik rejects and deletes expired app
+      # passwords. auth_method_args.token is set by TokenBackend. Always
+      # passes; failure_result true keeps an error from blocking the login.
+      - id: dot1x-app-password-renew
+        model: authentik_policies_expression.expressionpolicy
+        identifiers:
+          name: dot1x-app-password-renew
+        state: present
+        attrs:
+          expression: |
+            from datetime import timedelta
+            from django.utils.timezone import now
+            from authentik.core.models import Token, TokenIntents
+            ref = (request.context.get("auth_method_args") or {}).get("token")
+            if request.context.get("auth_method") == "token" and isinstance(ref, dict):
+                renewed = now() + timedelta(days=60)
+                count = Token.objects.filter(
+                    pk=ref.get("pk"),
+                    user=request.user,
+                    intent=TokenIntents.INTENT_APP_PASSWORD,
+                    expiring=True,
+                    expires__lt=renewed - timedelta(days=1),
+                ).update(expires=renewed)
+                ak_logger.info("dot1x app password", token=ref.get("name"), renewed=count)
+            return True
+
+      - model: authentik_policies.policybinding
+        identifiers:
+          policy: !KeyOf dot1x-app-password-renew
+          target: !KeyOf binding-dot1x-login
+          order: 0
+        state: present
+        attrs:
+          enabled: true
+          negate: false
+          failure_result: true
+
+      - id: dot1x-has-vlan
+        model: authentik_policies_expression.expressionpolicy
+        identifiers:
+          name: dot1x-has-vlan
+        state: present
+        attrs:
+          expression: |
+            for g in request.user.all_groups():
+                v = g.attributes.get("dot1x_vlan")
+                if type(v) is int and 1 <= v <= 4094:
+                    return True
+            return False
+
+      # Lowest dot1x_vlan wins. Tunnel-* (RFC 3580) set by raw code: the
+      # bundled dictionary lacks them. Cisco-AV-Pair is the fallback.
+      - id: dot1x-vlan-mapping
+        model: authentik_providers_radius.radiusproviderpropertymapping
+        identifiers:
+          name: dot1x-vlan
+        state: present
+        attrs:
+          expression: |
+            vlans = [g.attributes.get("dot1x_vlan") for g in request.user.all_groups()]
+            vlans = [v for v in vlans if type(v) is int and 1 <= v <= 4094]
+            if not vlans:
+                return packet
+            vlan = str(min(vlans))
+            try:
+                packet[64] = [b"\x00\x00\x00\x0d"]  # Tunnel-Type = VLAN
+                packet[65] = [b"\x00\x00\x00\x06"]  # Tunnel-Medium-Type = IEEE-802
+                packet[81] = [vlan.encode()]  # Tunnel-Private-Group-Id
+            except Exception:
+                pass
+            define_attribute(
+                vendor_code=9,
+                vendor_name="Cisco",
+                attribute_name="AV-Pair",
+                attribute_code=1,
+                attribute_type="string",
+            )
+            packet["Cisco-AV-Pair"] = f"dot1x-vlan={vlan}"
+            return packet
+
+      # client_networks: cluster pod CIDRs (kube-controller-manager
+      # --cluster-cidr, talos/patches/cluster.yaml podSubnets).
+      - id: dot1x-provider
+        model: authentik_providers_radius.radiusprovider
+        identifiers:
+          name: 802.1X Radius
+        state: present
+        attrs:
+          authorization_flow: !KeyOf dot1x-flow
+          invalidation_flow: !Find [authentik_flows.flow, [slug, default-invalidation-flow]]
+          shared_secret: !Env DOT1X_OUTPOST_SECRET
+          client_networks: "10.244.0.0/16,fd10:244::/48"
+          mfa_support: false
+          certificate: null
+          property_mappings:
+            - !KeyOf dot1x-vlan-mapping
+
+      - id: dot1x-application
+        model: authentik_core.application
+        identifiers:
+          slug: dot1x
+        state: present
+        attrs:
+          name: 802.1X network access
+          slug: dot1x
+          provider: !KeyOf dot1x-provider
+          meta_description: "WiFi and wired 802.1X via FreeRADIUS"
+
+      - model: authentik_policies.policybinding
+        identifiers:
+          target: !KeyOf dot1x-application
+          policy: !KeyOf dot1x-has-vlan
+          order: 0
+        state: present
+        attrs:
+          enabled: true
+          negate: false
+          failure_result: false
+
+      - model: authentik_outposts.outpost
+        identifiers:
+          name: 802.1X Radius
+        state: present
+        attrs:
+          type: radius
+          service_connection: !Find [authentik_outposts.kubernetesserviceconnection, [name, "Local Kubernetes Cluster"]]
+          providers:
+            - !KeyOf dot1x-provider
+          config:
+            log_level: info
+            authentik_host: "http://authentik-server.authentik.svc.cluster.local"
+            authentik_host_insecure: false
+            authentik_host_browser: "https://auth.renner.uno/"
+            refresh_interval: "minutes=5"
+            container_image: null
+            object_naming_template: "ak-outpost-%(name)s"
+            kubernetes_namespace: authentik
+            kubernetes_replicas: 2
+            kubernetes_service_type: ClusterIP
+            kubernetes_disabled_components: []
+            kubernetes_image_pull_secrets: []
+            kubernetes_ingress_annotations: {}
+            kubernetes_ingress_class_name: null
+            kubernetes_ingress_secret_name: "authentik-outpost-tls"
+            kubernetes_ingress_path_type: null
+            kubernetes_httproute_annotations: {}
+            kubernetes_httproute_parent_refs: []
+            kubernetes_json_patches: null
+
+      # wlan.renner.uno (wlan-setup.yaml): signs the user in and, with the
+      # user's own access token (scope goauthentik.io/api), creates the WLAN
+      # app password for the Android Passpoint profile. Confidential client;
+      # the secret comes from wlan-setup-oauth (wlan-setup-oauth.yaml). No
+      # policy binding: every authentik user may set up the WLAN.
+      - id: wlan-setup-provider
+        model: authentik_providers_oauth2.oauth2provider
+        identifiers:
+          name: WLAN setup
+        state: present
+        attrs:
+          authentication_flow: null
+          authorization_flow: !Find [authentik_flows.flow, [slug, default-provider-authorization-implicit-consent]]
+          invalidation_flow: !Find [authentik_flows.flow, [slug, default-provider-invalidation-flow]]
+          client_type: confidential
+          client_id: wlan-setup
+          client_secret: !Env WLAN_SETUP_CLIENT_SECRET
+          grant_types:
+            - authorization_code
+          access_token_validity: minutes=5
+          signing_key: !Find [authentik_crypto.certificatekeypair, [name, authentik Self-signed Certificate]]
+          property_mappings:
+            - !Find [authentik_providers_oauth2.scopemapping, [managed, goauthentik.io/providers/oauth2/scope-openid]]
+            - !Find [authentik_providers_oauth2.scopemapping, [managed, goauthentik.io/providers/oauth2/scope-profile]]
+            - !Find [authentik_providers_oauth2.scopemapping, [managed, goauthentik.io/providers/oauth2/scope-authentik_api]]
+          redirect_uris:
+            - url: https://wlan.renner.uno/android/callback
+              matching_mode: strict
+            - url: https://wlan.renner.uno/apple/callback
+              matching_mode: strict
+
+      - model: authentik_core.application
+        identifiers:
+          slug: wlan-setup
+        state: present
+        attrs:
+          name: WLAN setup
+          slug: wlan-setup
+          provider: !KeyOf wlan-setup-provider
+          meta_launch_url: https://wlan.renner.uno
+          meta_description: "WLAN setup page; creates WLAN app passwords"

kubernetes/apps/authentik/cluster.yaml

@@ -73,6 +73,10 @@ spec:
       # on an unclean shutdown is not an acceptable trade.
       checkpoint_timeout: "15min"
       max_wal_size: "2GB"
+      # authentik's subclass joins over empty tables get planner costs far above
+      # jit_above_cost; LLVM compilation then takes ~420 ms for a query that
+      # executes in 0.1 ms (every flow start, every RADIUS/LDAP login).
+      jit: "off"
       # zstd, not "on": the boolean spelling resolves to pglz (2016-era, weaker
       # and slower than the lz4/zstd this build also accepts). Compresses the
       # full-page images that dominate WAL volume after each checkpoint.

kubernetes/apps/authentik/freeradius-cnp.yaml

@@ -0,0 +1,45 @@
+# RADIUS clients reach FreeRADIUS through radius-lb (externalTrafficPolicy
+# Local keeps their source IP): APs 10.2.10.0/24 + fd02:10::/64, test
+# clients 10.2.50.0/24 + fd02:50::/64 (test phase only).
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: freeradius-nas-ingress
+  namespace: authentik
+spec:
+  endpointSelector:
+    matchLabels:
+      app.kubernetes.io/name: freeradius
+  ingress:
+    - fromCIDR:
+        - 10.2.10.0/24
+        - fd02:10::/64
+        - 10.2.50.0/24
+        - fd02:50::/64
+      toPorts:
+        - ports:
+            - port: "1812"
+              protocol: UDP
+            - port: "1813"
+              protocol: UDP
+---
+# FreeRADIUS proxies inner PAP to the 802.1X outpost on its container port.
+# Additive: default-deny-ingress already admits the whole namespace.
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: dot1x-outpost-freeradius-ingress
+  namespace: authentik
+spec:
+  endpointSelector:
+    matchLabels:
+      app.kubernetes.io/name: authentik-outpost-radius
+      goauthentik.io/outpost-name: 8021x-radius
+  ingress:
+    - fromEndpoints:
+        - matchLabels:
+            app.kubernetes.io/name: freeradius
+      toPorts:
+        - ports:
+            - port: "1812"
+              protocol: UDP

kubernetes/apps/authentik/freeradius-config.yaml

@@ -0,0 +1,404 @@
+# FreeRADIUS 3.2 config for 802.1X: outer identity anonymous[@...] -> EAP-TTLS
+# terminated here, inner PAP proxied to the authentik outpost
+# ak-outpost-8021x-radius; any other outer identity -> whole EAP conversation
+# proxied to the UDM RADIUS (UniFi Endpoint). Replaces the image's raddb
+# completely. Functional test: tests/radius/run.sh.
+# VLAN contract: docs/radius/dot1x.md.
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: freeradius-config
+  namespace: authentik
+  annotations:
+    # FreeRADIUS uses ${...} itself; Flux postBuild substitution must skip it.
+    kustomize.toolkit.fluxcd.io/substitute: disabled
+data:
+  radiusd.conf: |
+    prefix = /opt
+    exec_prefix = ${prefix}
+    sbindir = ${exec_prefix}/sbin
+    libdir = ${exec_prefix}/lib
+    raddbdir = /run/raddb/raddb
+    confdir = ${raddbdir}
+    modconfdir = ${confdir}/mods-config
+    certdir = ${confdir}/certs
+    cadir = ${confdir}/certs
+    db_dir = ${raddbdir}
+    # only writable path in the pod
+    localstatedir = /tmp
+    logdir = /tmp
+    radacctdir = /tmp
+    run_dir = /tmp
+    name = radiusd
+    pidfile = ${run_dir}/${name}.pid
+
+    max_request_time = 30
+    cleanup_delay = 5
+    # Greater than every home server's response_window (proxy.conf): never
+    # forward a NAS retransmit to a home server. A TTLS inner request sent
+    # twice to the home server leaves a freed request in the proxy hash;
+    # radiusd segfaults.
+    proxy_dedup_window = 10
+    max_requests = 16384
+    hostname_lookups = no
+
+    log {
+      destination = stdout
+      colourise = no
+      stripped_names = no
+      auth = yes
+      auth_badpass = no
+      auth_goodpass = no
+    }
+
+    checkrad = ${sbindir}/checkrad
+
+    security {
+      allow_core_dumps = no
+      max_attributes = 200
+      # Rejects decided here wait 0.5 s; proxied rejects are not delayed.
+      reject_delay = 0.5
+      status_server = yes
+      require_message_authenticator = yes
+      limit_proxy_state = yes
+    }
+
+    proxy_requests = yes
+    $INCLUDE proxy.conf
+    $INCLUDE clients.conf
+
+    thread pool {
+      start_servers = 2
+      max_servers = 16
+      min_spare_servers = 2
+      max_spare_servers = 4
+      max_requests_per_server = 0
+    }
+
+    modules {
+      $INCLUDE mods-enabled/
+    }
+
+    instantiate {
+    }
+
+    policy {
+    }
+
+    $INCLUDE sites-enabled/
+
+  # Site-local dictionary; the image's dictionaries under /opt/share/freeradius
+  # are loaded first.
+  dictionary: |
+    # no local attributes
+
+  clients.conf: |
+    client aps {
+      ipaddr = 10.2.10.0/24
+      secret = $ENV{DOT1X_NAS_SECRET}
+      require_message_authenticator = yes
+    }
+
+    client aps6 {
+      ipv6addr = fd02:10::/64
+      secret = $ENV{DOT1X_NAS_SECRET}
+      require_message_authenticator = yes
+    }
+
+    # test, test6: test phase only (docs/radius/dot1x.md).
+    client test {
+      ipaddr = 10.2.50.0/24
+      secret = $ENV{DOT1X_TEST_SECRET}
+      require_message_authenticator = yes
+    }
+
+    client test6 {
+      ipv6addr = fd02:50::/64
+      secret = $ENV{DOT1X_TEST_SECRET}
+      require_message_authenticator = yes
+    }
+
+  proxy.conf: |
+    proxy server {
+      default_fallback = no
+    }
+
+    home_server authentik {
+      type = auth
+      ipaddr = ak-outpost-8021x-radius.authentik.svc.cluster.local
+      port = 1812
+      proto = udp
+      secret = $ENV{DOT1X_OUTPOST_SECRET}
+      # The outpost sends Message-Authenticator on Access-Accept only.
+      require_message_authenticator = no
+      # Less than proxy_dedup_window (radiusd.conf).
+      response_window = 5
+      zombie_period = 20
+      # The outpost does not answer Status-Server. Probe with an
+      # Access-Request for a user that does not exist in authentik; the
+      # reject counts as an answer. Sent only while zombie or dead.
+      status_check = request
+      username = "dot1x-status-probe"
+      password = "not-a-secret"
+      check_interval = 6
+      check_timeout = 4
+      num_answers_to_alive = 3
+    }
+
+    home_server_pool authentik {
+      type = fail-over
+      home_server = authentik
+    }
+
+    realm authentik {
+      auth_pool = authentik
+      nostrip
+    }
+
+    # UDM RADIUS (FreeRADIUS) for UniFi Endpoint accounts; gets the whole
+    # outer EAP conversation. Address: UDM on VLAN 11 "(11) RADIUS", reached
+    # over net1 (freeradius-network-attachment.yaml); the UDM accepts
+    # RADIUS clients from 10.2.11.0/24 only.
+    home_server udm {
+      type = auth
+      ipaddr = 10.2.11.1
+      port = 1812
+      proto = udp
+      secret = $ENV{UDM_RADIUS_SECRET}
+      # RFC 3579: every reply to an EAP request carries Message-Authenticator.
+      require_message_authenticator = yes
+      # Less than proxy_dedup_window (radiusd.conf).
+      response_window = 5
+      zombie_period = 20
+      # Probe with an Access-Request for a user that cannot exist (no
+      # EAP-Message, so no Endpoint login); the reject counts as an answer.
+      # Sent only while zombie or dead.
+      status_check = request
+      username = "udm-status-probe.invalid"
+      password = "not-a-secret"
+      check_interval = 6
+      check_timeout = 4
+      num_answers_to_alive = 3
+    }
+
+    home_server_pool udm {
+      type = fail-over
+      home_server = udm
+    }
+
+    realm udm {
+      auth_pool = udm
+      nostrip
+    }
+
+  mods-enabled_always: |
+    always ok {
+      rcode = ok
+    }
+    always reject {
+      rcode = reject
+    }
+    always noop {
+      rcode = noop
+    }
+
+  mods-enabled_eap: |
+    eap {
+      default_eap_type = ttls
+      timer_expire = 60
+      ignore_unknown_eap_types = no
+      max_sessions = ${max_requests}
+
+      tls-config tls-common {
+        certificate_file = ${certdir}/radius-tls/tls.crt
+        private_key_file = ${certdir}/radius-tls/tls.key
+        # tls.crt from cert-manager carries leaf + intermediate.
+        auto_chain = yes
+        tls_min_version = "1.2"
+        tls_max_version = "1.2"
+        cipher_list = "DEFAULT"
+        ecdh_curve = ""
+        cache {
+          enable = no
+        }
+      }
+
+      ttls {
+        tls = tls-common
+        copy_request_to_tunnel = no
+        use_tunneled_reply = yes
+        virtual_server = inner-tunnel
+      }
+    }
+
+  sites-enabled_default: |
+    server default {
+      # NAS listeners on eth0 only; net1 (VLAN 11) carries the UDM proxy
+      # traffic and nothing else.
+      listen {
+        type = auth
+        ipaddr = *
+        port = 1812
+        interface = eth0
+      }
+
+      listen {
+        type = acct
+        ipaddr = *
+        port = 1813
+        interface = eth0
+      }
+
+      listen {
+        type = auth
+        ipv6addr = ::
+        port = 1812
+        interface = eth0
+      }
+
+      listen {
+        type = acct
+        ipv6addr = ::
+        port = 1813
+        interface = eth0
+      }
+
+      authorize {
+        # EAP only.
+        if (!&EAP-Message) {
+          reject
+        }
+        # Outer identity anonymous[@realm]: authentik clients, EAP-TTLS here.
+        # Any other: UniFi Endpoint account (real name as outer identity);
+        # every round goes to the UDM unprocessed.
+        if (&User-Name && &User-Name !~ /^anonymous(@.*)?$/i) {
+          update control {
+            &Proxy-To-Realm := udm
+          }
+          return
+        }
+        eap {
+          ok = return
+          updated = return
+        }
+        Autz-Type Status-Server {
+          ok
+        }
+      }
+
+      authenticate {
+        Auth-Type EAP {
+          eap
+        }
+      }
+
+      # Answered here; the outpost has no accounting port.
+      preacct {
+      }
+      accounting {
+        ok
+      }
+
+      # UDM replies pass unchanged.
+      post-auth {
+        if (&control:Proxy-To-Realm == "udm") {
+          noop
+        }
+        else {
+          update reply {
+            &Cisco-AVPair !* ANY
+          }
+        }
+        Post-Auth-Type REJECT {
+          if (&control:Proxy-To-Realm == "udm") {
+            noop
+          }
+          else {
+            eap
+          }
+        }
+      }
+
+      pre-proxy {
+      }
+
+      # Runs the TTLS callback that hands the outpost reply back into the tunnel.
+      post-proxy {
+        if (&control:Proxy-To-Realm == "udm") {
+          noop
+        }
+        else {
+          eap
+        }
+      }
+    }
+
+  sites-enabled_inner-tunnel: |
+    server inner-tunnel {
+      authorize {
+        # PAP only.
+        if (!&User-Password) {
+          reject
+        }
+        update control {
+          &Proxy-To-Realm := authentik
+        }
+      }
+
+      authenticate {
+      }
+
+      # Runs on the outpost's Access-Accept. use_tunneled_reply copies this
+      # reply into the outer Access-Accept.
+      post-auth {
+        update reply {
+          &Message-Authenticator !* ANY
+          &Proxy-State !* ANY
+        }
+        if (!&reply:Tunnel-Private-Group-Id && &reply:Cisco-AVPair && &reply:Cisco-AVPair =~ /^dot1x-vlan=([0-9]+)$/) {
+          update reply {
+            &Tunnel-Type := VLAN
+            &Tunnel-Medium-Type := IEEE-802
+            &Tunnel-Private-Group-Id := "%{1}"
+          }
+        }
+        update reply {
+          &Cisco-AVPair !* ANY
+        }
+        # No VLAN would put the client in the WLAN's fallback network.
+        if (!&reply:Tunnel-Private-Group-Id) {
+          reject
+        }
+      }
+
+      pre-proxy {
+      }
+
+      post-proxy {
+      }
+    }
+
+  # Status-Server only, loopback only; used by the probes.
+  sites-enabled_status: |
+    server status {
+      listen {
+        type = status
+        ipaddr = 127.0.0.1
+        port = 18121
+      }
+
+      client probe {
+        ipaddr = 127.0.0.1
+        secret = status-probe
+      }
+
+      authorize {
+        ok
+        Autz-Type Status-Server {
+          ok
+        }
+      }
+    }
+
+  probe_status: |
+    Message-Authenticator = 0x00

kubernetes/apps/authentik/freeradius-network-attachment.yaml

@@ -0,0 +1,48 @@
+---
+# FreeRADIUS net1: macvlan on radius0, VLAN 11 "(11) RADIUS" (VLANConfig in
+# kubernetes/talos/patches/k8s-{1,2,3}.yaml). Carries only the proxy traffic
+# to home server `udm` (freeradius-config.yaml): the UDM RADIUS accepts
+# clients from 10.2.11.0/24, not from the pod CIDR. Bypasses Cilium policy.
+# Address leased from the UDM; nothing references it.
+#
+# net1 holds only its connected /24, so the unbound proxy socket reaches the
+# UDM via net1 with the leased source. No sbr: it moves that route into a
+# source-based table, and the proxy would leave via eth0 from the pod IP.
+# skipDefault + subnet-mask: the lease is requested without routers, so no
+# default route lands on net1 (dnsmasq sends only requested options).
+# IPv6 off on net1: VLAN 11 sends RAs (default route, SLAAC); the UDM
+# RADIUS clients are IPv4 only.
+#
+# Requires cni-dhcp-daemon (infrastructure/multus) and VLAN 11 in Cilium's
+# bpf.vlanBypass (infrastructure/cilium/helmrelease.yaml).
+apiVersion: k8s.cni.cncf.io/v1
+kind: NetworkAttachmentDefinition
+metadata:
+  name: freeradius-udm
+  namespace: authentik
+spec:
+  config: |
+    {
+      "cniVersion": "0.3.1",
+      "name": "freeradius-udm",
+      "plugins": [
+        {
+          "type": "macvlan",
+          "master": "radius0",
+          "mode": "bridge",
+          "ipam": {
+            "type": "dhcp",
+            "request": [
+              { "skipDefault": true },
+              { "option": "subnet-mask" }
+            ]
+          }
+        },
+        {
+          "type": "tuning",
+          "sysctl": {
+            "net.ipv6.conf.IFNAME.disable_ipv6": "1"
+          }
+        }
+      ]
+    }

kubernetes/apps/authentik/freeradius.yaml

@@ -0,0 +1,235 @@
+# 802.1X RADIUS front end (radius.renner.uno). Config: freeradius-config.yaml.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: freeradius
+  namespace: authentik
+  labels:
+    app.kubernetes.io/name: freeradius
+  annotations:
+    configmap.reloader.stakater.com/reload: freeradius-config
+    secret.reloader.stakater.com/reload: radius-secrets,radius-tls
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: freeradius
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: freeradius
+      annotations:
+        # net1 on VLAN 11: the path to the UDM RADIUS.
+        k8s.v1.cni.cncf.io/networks: freeradius-udm
+    spec:
+      enableServiceLinks: false
+      affinity:
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - labelSelector:
+                matchLabels:
+                  app.kubernetes.io/name: freeradius
+              topologyKey: kubernetes.io/hostname
+      # The image has no radius user and its own raddb is root-only; the
+      # mounted raddb replaces it.
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65534
+        runAsGroup: 65534
+        fsGroup: 65534
+        seccompProfile:
+          type: RuntimeDefault
+      # FreeRADIUS refuses a config dir that is world-writable; kubelet's
+      # volume root is, so the config is copied to a dir the pod owns.
+      initContainers:
+        - name: raddb-copy
+          image: docker.io/freeradius/freeradius-server:3.2.10-alpine # {"$imagepolicy": "flux-system:freeradius"}
+          command:
+            - /bin/sh
+            - -ec
+          args:
+            - mkdir -p /run/raddb/raddb && cp -rL /etc/raddb-src/. /run/raddb/raddb/ && chmod 0750 /run/raddb/raddb
+          resources:
+            requests:
+              cpu: 10m
+              memory: 16Mi
+            limits:
+              memory: 64Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop:
+                - ALL
+          volumeMounts:
+            - name: raddb
+              mountPath: /etc/raddb-src
+              readOnly: true
+            - name: raddb-run
+              mountPath: /run/raddb
+      containers:
+        - name: freeradius
+          image: docker.io/freeradius/freeradius-server:3.2.10-alpine # {"$imagepolicy": "flux-system:freeradius"}
+          args:
+            - -f
+            - -l
+            - stdout
+            - -d
+            - /run/raddb/raddb
+          env:
+            - name: DOT1X_NAS_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: radius-secrets
+                  key: DOT1X_NAS_SECRET
+            - name: DOT1X_TEST_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: radius-secrets
+                  key: DOT1X_TEST_SECRET
+            - name: DOT1X_OUTPOST_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: radius-secrets
+                  key: DOT1X_OUTPOST_SECRET
+            - name: UDM_RADIUS_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: radius-secrets
+                  key: UDM_RADIUS_SECRET
+          ports:
+            - name: radius
+              containerPort: 1812
+              protocol: UDP
+            - name: radius-acct
+              containerPort: 1813
+              protocol: UDP
+          readinessProbe:
+            exec:
+              command:
+                - /opt/bin/radclient
+                - -d
+                - /run/raddb/raddb
+                - -q
+                - -r
+                - "1"
+                - -t
+                - "2"
+                - -f
+                - /run/raddb/raddb/probe/status
+                - 127.0.0.1:18121
+                - status
+                - status-probe
+            periodSeconds: 10
+            timeoutSeconds: 5
+          livenessProbe:
+            exec:
+              command:
+                - /opt/bin/radclient
+                - -d
+                - /run/raddb/raddb
+                - -q
+                - -r
+                - "1"
+                - -t
+                - "2"
+                - -f
+                - /run/raddb/raddb/probe/status
+                - 127.0.0.1:18121
+                - status
+                - status-probe
+            initialDelaySeconds: 10
+            periodSeconds: 30
+            timeoutSeconds: 5
+          resources:
+            requests:
+              cpu: 20m
+              memory: 64Mi
+            limits:
+              memory: 256Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop:
+                - ALL
+          volumeMounts:
+            - name: raddb-run
+              mountPath: /run/raddb
+              readOnly: true
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: raddb
+          projected:
+            defaultMode: 0440
+            sources:
+              - configMap:
+                  name: freeradius-config
+                  items:
+                    - key: radiusd.conf
+                      path: radiusd.conf
+                    - key: dictionary
+                      path: dictionary
+                    - key: clients.conf
+                      path: clients.conf
+                    - key: proxy.conf
+                      path: proxy.conf
+                    - key: mods-enabled_always
+                      path: mods-enabled/always
+                    - key: mods-enabled_eap
+                      path: mods-enabled/eap
+                    - key: sites-enabled_default
+                      path: sites-enabled/default
+                    - key: sites-enabled_inner-tunnel
+                      path: sites-enabled/inner-tunnel
+                    - key: sites-enabled_status
+                      path: sites-enabled/status
+                    - key: probe_status
+                      path: probe/status
+              - secret:
+                  name: radius-tls
+                  items:
+                    - key: tls.crt
+                      path: certs/radius-tls/tls.crt
+                    - key: tls.key
+                      path: certs/radius-tls/tls.key
+        - name: raddb-run
+          emptyDir:
+            medium: Memory
+            sizeLimit: 4Mi
+        # pidfile
+        - name: tmp
+          emptyDir:
+            medium: Memory
+            sizeLimit: 16Mi
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: radius-lb
+  namespace: authentik
+  labels:
+    lb-pool: bgp
+  annotations:
+    lbipam.cilium.io/ips: "10.2.99.91,fd99::91"
+    # LAN-side DNS only (external-dns-unifi); see ldap-outpost-lb.yaml.
+    external-dns.kubernetes.io/hostname: radius.renner.uno
+spec:
+  type: LoadBalancer
+  externalTrafficPolicy: Local
+  ipFamilyPolicy: PreferDualStack
+  ipFamilies:
+    - IPv4
+    - IPv6
+  selector:
+    app.kubernetes.io/name: freeradius
+  ports:
+    - name: radius
+      port: 1812
+      targetPort: radius
+      protocol: UDP
+    - name: radius-acct
+      port: 1813
+      targetPort: radius-acct
+      protocol: UDP

kubernetes/apps/authentik/helmrelease.yaml

@@ -69,6 +69,11 @@ spec:
             secretKeyRef:
               name: ak-pg-app
               key: password
+        # Default 0 opens a new Postgres connection per request.
+        - name: AUTHENTIK_POSTGRESQL__CONN_MAX_AGE
+          value: "60"
+        - name: AUTHENTIK_POSTGRESQL__CONN_HEALTH_CHECKS
+          value: "true"
         - name: AUTHENTIK_EMAIL__PASSWORD
           valueFrom:
             secretKeyRef:
@@ -80,8 +85,8 @@ spec:
         # authentik_crypto.certificatekeypair the LDAP providers attach
         # via attrs.certificate. Issued by cert-manager — see
         # ldap-outpost-cert.yaml. Both pods get it because the chart's
-        # global.env propagates to server AND worker; if only the worker
-        # had it, blueprint apply would crash on startup with KeyError.
+        # global.env propagates to server AND worker; a pod without the
+        # variable resolves `!Env` to None/the default (no KeyError).
         - name: LDAP_OUTPOST_TLS_CRT
           valueFrom:
             secretKeyRef:
@@ -164,6 +169,26 @@ spec:
             hosts:
               - auth.renner.uno
     worker:
+      # Overrides the global key; keep authentik-secrets in the list.
+      podAnnotations:
+        secret.reloader.stakater.com/reload: authentik-secrets,radius-secrets,wlan-setup-oauth
+      # Shared secret of the 802.1X Radius provider and client secret of the
+      # WLAN setup provider, set via `!Env` in dot1x-radius.yaml. Worker only
+      # (blueprint applier); optional so a missing Secret fails only the
+      # blueprint entries that use it.
+      env:
+        - name: DOT1X_OUTPOST_SECRET
+          valueFrom:
+            secretKeyRef:
+              name: radius-secrets
+              key: DOT1X_OUTPOST_SECRET
+              optional: true
+        - name: WLAN_SETUP_CLIENT_SECRET
+          valueFrom:
+            secretKeyRef:
+              name: wlan-setup-oauth
+              key: client_secret
+              optional: true
       resources:
         requests:
           # Same reasoning as server above, and the worker is burstier still:

kubernetes/apps/authentik/kustomization.yaml

@@ -10,6 +10,15 @@ resources:
   - ldap-outpost-cert.yaml
   - ldap-outpost-lb.yaml
   - ldap-outpost-cnp.yaml
+  - radius-cert.yaml
+  - radius-externalsecret.yaml
+  - freeradius-config.yaml
+  - freeradius-network-attachment.yaml
+  - freeradius.yaml
+  - freeradius-cnp.yaml
+  - wlan-setup-oauth.yaml
+  - wlan-setup-config.yaml
+  - wlan-setup.yaml
   # ak-pg CNPG Postgres backend (moved here from the retired seed-authentik KS;
   # each carries prune: disabled so ownership transferred without a teardown).
   # authentik has no data PVCs — all state lives in ak-pg. This KS depends on

kubernetes/apps/authentik/radius-cert.yaml

@@ -0,0 +1,15 @@
+---
+# EAP-TTLS server certificate for the FreeRADIUS service (radius.renner.uno).
+# Issued via the cluster-wide Cloudflare DNS-01 ClusterIssuer.
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: radius-tls
+  namespace: authentik
+spec:
+  secretName: radius-tls
+  issuerRef:
+    name: letsencrypt-cluster
+    kind: ClusterIssuer
+  dnsNames:
+    - radius.renner.uno

kubernetes/apps/authentik/radius-externalsecret.yaml

@@ -0,0 +1,15 @@
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: radius-secrets
+  namespace: authentik
+spec:
+  refreshInterval: 10m
+  secretStoreRef:
+    kind: ClusterSecretStore
+    name: openbao
+  target:
+    name: radius-secrets
+  dataFrom:
+    - extract:
+        key: apps/radius

kubernetes/apps/authentik/wlan-setup-config.yaml

@@ -0,0 +1,482 @@
+# wlan.renner.uno: setup files for "Renner UniFi" (802.1X, EAP-TTLS/PAP
+# against freeradius, outer identity anonymous, server name radius.renner.uno).
+# Served by wlan-setup (wlan-setup.yaml) behind the Authentik gate; the
+# username comes from X-authentik-username. The Android and Apple Passpoint
+# profiles carry a credential: a per-device authentik app password that the
+# page creates with the user's own OAuth access token.
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: wlan-setup
+  namespace: authentik
+data:
+  # The image's nginx.conf plus the njs module and the OAuth client secret
+  # passpoint.js reads from the environment.
+  nginx.conf: |
+    load_module modules/ngx_http_js_module.so;
+
+    env WLAN_SETUP_CLIENT_SECRET;
+
+    worker_processes 1;
+    error_log /var/log/nginx/error.log notice;
+    pid /tmp/nginx.pid;
+
+    events {
+        worker_connections 1024;
+    }
+
+    http {
+        proxy_temp_path /tmp/proxy_temp;
+        client_body_temp_path /tmp/client_temp;
+        fastcgi_temp_path /tmp/fastcgi_temp;
+        uwsgi_temp_path /tmp/uwsgi_temp;
+        scgi_temp_path /tmp/scgi_temp;
+
+        include /etc/nginx/mime.types;
+        default_type application/octet-stream;
+
+        log_format main '$remote_addr - [$time_local] "$request" $status $body_bytes_sent "$http_user_agent"';
+        access_log /var/log/nginx/access.log main;
+
+        sendfile on;
+        keepalive_timeout 65;
+
+        include /etc/nginx/conf.d/*.conf;
+    }
+
+  default.conf: |
+    # Only plain usernames reach a generated file; anything else leaves the
+    # field empty and the device asks for it.
+    map $http_x_authentik_username $wifi_user {
+        "~^[A-Za-z0-9._@+-]{1,64}$" $http_x_authentik_username;
+        default "";
+    }
+
+    js_path /etc/nginx/njs/;
+    js_import passpoint from passpoint.js;
+
+    # authentik-server, resolved once at start; reached only by passpoint.js
+    # subrequests (/_ak/...).
+    upstream authentik {
+        server authentik-server.authentik.svc.cluster.local:80;
+    }
+
+    server {
+        listen 8080;
+        listen [::]:8080;
+        server_tokens off;
+        root /usr/share/nginx/html;
+        add_header Cache-Control "no-store" always;
+
+        location = / {
+            try_files /index.html =404;
+        }
+
+        location = /whoami {
+            default_type text/plain;
+            return 200 $wifi_user;
+        }
+
+        location = /renner-unifi-wlan.cmd {
+            default_type application/octet-stream;
+            add_header Cache-Control "no-store" always;
+            add_header Content-Disposition 'attachment; filename="renner-unifi-wlan.cmd"' always;
+            try_files /renner-unifi-wlan.cmd =404;
+        }
+
+        # Android and Apple: a tap on /<platform>/install starts an
+        # authorization-code sign-in at authentik (the user is already signed
+        # in there); the callback creates the app password as the user and
+        # answers the same navigation with the Passpoint profile. Android:
+        # application/x-wifi-config, base64, no Content-Disposition, as its
+        # installer requires. Apple: a .mobileconfig download.
+        location ~ ^/(android|apple)/install$ {
+            js_content passpoint.install;
+        }
+
+        location ~ ^/(android|apple)/callback$ {
+            # The query carries the one-time authorization code.
+            access_log off;
+            js_content passpoint.callback;
+        }
+
+        # Subrequests from passpoint.js only. Credential and content type
+        # arrive as arguments and leave as headers; proxy_pass with a variable
+        # URI does not forward the arguments. $arg_* only: subrequests share
+        # the parent's variable cache, so a map would keep its first value.
+        location ~ ^/_ak(/.*)$ {
+            internal;
+            proxy_pass http://authentik$1;
+            # njs reads the whole reply from this buffer (default one page).
+            subrequest_output_buffer_size 256k;
+            # Only the headers set here reach authentik.
+            proxy_pass_request_headers off;
+            proxy_set_header Host auth.renner.uno;
+            proxy_set_header Cookie "";
+            proxy_set_header Authorization "$arg_scheme $arg_cred";
+            proxy_set_header Content-Type $arg_ct;
+            proxy_set_header Accept "application/json";
+        }
+
+        location = /healthz {
+            access_log off;
+            default_type text/plain;
+            return 200 "ok\n";
+        }
+
+        location / {
+            return 404;
+        }
+    }
+
+  # Windows: extracts the WLAN profile (everything after line 8 of itself)
+  # into %TEMP% and imports it for the current user with netsh. EAP-TTLS with
+  # PAPAuthentication, outer identity anonymous, server name
+  # radius.renner.uno, trust anchor ISRG Root X1 (SHA-1 thumbprint; the
+  # Let's Encrypt chain of radius-tls ends there). Windows asks for username
+  # and password on connect. CRLF line endings: cmd.exe needs them.
+  renner-unifi-wlan.cmd: "@echo off\r\nrem WLAN Renner UniFi einrichten (802.1X, Anmeldung mit dem authentik-Konto)\r\nset \"WLANXML=%TEMP%\\renner-unifi-wlan.xml\"\r\nmore +8 \"%~f0\" > \"%WLANXML%\"\r\nnetsh wlan add profile filename=\"%WLANXML%\" user=current\r\ndel \"%WLANXML%\"\r\nnetsh wlan connect name=\"Renner UniFi\"\r\npause & exit /b\r\n<?xml version=\"1.0\"?><WLANProfile xmlns=\"http://www.microsoft.com/networking/WLAN/profile/v1\"><name>Renner UniFi</name><SSIDConfig><SSID><hex>52656E6E657220556E694669</hex><name>Renner UniFi</name></SSID><nonBroadcast>false</nonBroadcast></SSIDConfig><connectionType>ESS</connectionType><connectionMode>auto</connectionMode><MSM><security><authEncryption><authentication>WPA2</authentication><encryption>AES</encryption><useOneX>true</useOneX></authEncryption><OneX xmlns=\"http://www.microsoft.com/networking/OneX/v1\"><cacheUserData>true</cacheUserData><authMode>user</authMode><EAPConfig><EapHostConfig xmlns=\"http://www.microsoft.com/provisioning/EapHostConfig\"><EapMethod><Type xmlns=\"http://www.microsoft.com/provisioning/EapCommon\">21</Type><VendorId xmlns=\"http://www.microsoft.com/provisioning/EapCommon\">0</VendorId><VendorType xmlns=\"http://www.microsoft.com/provisioning/EapCommon\">0</VendorType><AuthorId xmlns=\"http://www.microsoft.com/provisioning/EapCommon\">311</AuthorId></EapMethod><Config xmlns=\"http://www.microsoft.com/provisioning/EapHostConfig\"><EapTtls xmlns=\"http://www.microsoft.com/provisioning/EapTtlsConnectionPropertiesV1\"><ServerValidation><ServerNames>radius.renner.uno</ServerNames><TrustedRootCAHash>ca bd 2a 79 a1 07 6a 31 f2 1d 25 36 35 cb 03 9d 43 29 a5 e8</TrustedRootCAHash><DisablePrompt>false</DisablePrompt></ServerValidation><Phase2Authentication><PAPAuthentication/></Phase2Authentication><Phase1Identity><IdentityPrivacy>true</IdentityPrivacy><AnonymousIdentity>anonymous</AnonymousIdentity></Phase1Identity></EapTtls></Config></EapHostConfig></EAPConfig></OneX></security></MSM></WLANProfile>\r\n"
+
+  # Android Passpoint R1 provisioning (source.android.com, Passpoint): the
+  # body is base64 of a MIME multipart with the PPS MO and the trust anchor.
+  # HomeSP FQDN and realm renner.uno match the Hotspot 2.0 domain and NAI realm
+  # the Passpoint WLAN announces; EAP-TTLS (21) with inner PAP. Trust anchor
+  # ISRG Root X1 (the radius-tls chain ends there), AAA server name
+  # radius.renner.uno (Extension/Android/AAAServerTrustedNames, as Android's
+  # PpsMoParser expects it). The credential is a new app password per install,
+  # created as the user with the access token of the "WLAN setup" OAuth client
+  # (authorization code, scope goauthentik.io/api). It starts with 29 days
+  # (below the 30-day token cap); each 802.1X login renews it to 60 days
+  # (policy dot1x-app-password-renew).
+  # Apple: com.apple.wifi.managed with IsHotspot, DomainName and NAIRealmNames
+  # renner.uno (no SSID: Passpoint matching), TTLS (21) with inner PAP, outer
+  # identity anonymous, trusted server name radius.renner.uno, username and
+  # app password. Fixed PayloadIdentifier/UUIDs so a reinstall replaces the
+  # previous profile.
+  passpoint.js: |
+    const ISRG_ROOT_X1 = "MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAwTzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2VhcmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBYMTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygch77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6UA5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sWT8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyHB5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UCB5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUvKBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWnOlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTnjh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbwqHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CIrU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkqhkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZLubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KKNFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7UrTkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdCjNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVcoyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPAmRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57demyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc=";
+    const USER = /^[A-Za-z0-9._@+-]{1,64}$/;
+
+    function b64(s) { return Buffer.from(s).toString("base64"); }
+    function node(name, inner) { return "<Node><NodeName>" + name + "</NodeName>" + inner + "</Node>"; }
+    function leaf(name, value) { return node(name, "<Value>" + value + "</Value>"); }
+
+    function profile(user, password) {
+        const pps = '<MgmtTree xmlns="syncml:dmddf1.2"><VerDTD>1.2</VerDTD>' +
+            node("PerProviderSubscription",
+                "<RTProperties><Type><DDFName>urn:wfa:mo:hotspot2dot0-perprovidersubscription:1.0</DDFName></Type></RTProperties>" +
+                node("i001",
+                    node("HomeSP", leaf("FriendlyName", "Renner") + leaf("FQDN", "renner.uno")) +
+                    node("Credential",
+                        leaf("Realm", "renner.uno") +
+                        node("UsernamePassword",
+                            leaf("Username", user) +
+                            leaf("Password", b64(password)) +
+                            node("EAPMethod", leaf("EAPType", "21") + leaf("InnerMethod", "PAP")))) +
+                    node("Extension", node("Android",
+                        node("AAAServerTrustedNames", leaf("FQDN", "radius.renner.uno")))))) +
+            "</MgmtTree>";
+        const mime = "Content-Type: multipart/mixed; boundary={boundary}\r\n" +
+            "Content-Transfer-Encoding: base64\r\n\r\n" +
+            "--{boundary}\r\n" +
+            "Content-Type: application/x-passpoint-profile\r\n" +
+            "Content-Transfer-Encoding: base64\r\n\r\n" +
+            b64(pps) + "\r\n" +
+            "--{boundary}\r\n" +
+            "Content-Type: application/x-x509-ca-cert\r\n" +
+            "Content-Transfer-Encoding: base64\r\n\r\n" +
+            ISRG_ROOT_X1 + "\r\n" +
+            "--{boundary}--\r\n";
+        return b64(mime);
+    }
+
+    function xml(s) {
+        return s.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
+    }
+
+    function mobileconfig(user, password) {
+        return '<?xml version="1.0" encoding="UTF-8"?>\n' +
+            '<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">\n' +
+            '<plist version="1.0"><dict>' +
+            '<key>PayloadContent</key><array><dict>' +
+            '<key>PayloadType</key><string>com.apple.wifi.managed</string>' +
+            '<key>PayloadVersion</key><integer>1</integer>' +
+            '<key>PayloadIdentifier</key><string>uno.renner.wifi.renner-unifi.network</string>' +
+            '<key>PayloadUUID</key><string>824959bf-c55d-4ed2-b569-c33f3759c2b6</string>' +
+            '<key>PayloadDisplayName</key><string>Renner UniFi</string>' +
+            '<key>PayloadOrganization</key><string>Renner</string>' +
+            '<key>IsHotspot</key><true/>' +
+            '<key>DomainName</key><string>renner.uno</string>' +
+            '<key>NAIRealmNames</key><array><string>renner.uno</string></array>' +
+            '<key>DisplayedOperatorName</key><string>Renner</string>' +
+            '<key>ServiceProviderRoamingEnabled</key><false/>' +
+            '<key>AutoJoin</key><true/>' +
+            '<key>EncryptionType</key><string>Any</string>' +
+            '<key>EAPClientConfiguration</key><dict>' +
+            '<key>UserName</key><string>' + xml(user) + '</string>' +
+            '<key>UserPassword</key><string>' + xml(password) + '</string>' +
+            '<key>OuterIdentity</key><string>anonymous</string>' +
+            '<key>AcceptEAPTypes</key><array><integer>21</integer></array>' +
+            '<key>TTLSInnerAuthentication</key><string>PAP</string>' +
+            '<key>TLSTrustedServerNames</key><array><string>radius.renner.uno</string></array>' +
+            '</dict></dict></array>' +
+            '<key>PayloadType</key><string>Configuration</string>' +
+            '<key>PayloadVersion</key><integer>1</integer>' +
+            '<key>PayloadIdentifier</key><string>uno.renner.wifi.renner-unifi</string>' +
+            '<key>PayloadUUID</key><string>7175a2a3-ddd3-42ea-b4ad-b7e5501892f3</string>' +
+            '<key>PayloadDisplayName</key><string>WLAN Renner UniFi</string>' +
+            '<key>PayloadOrganization</key><string>Renner</string>' +
+            '</dict></plist>\n';
+    }
+
+    const PLATFORMS = {
+        android: { label: "Android" },
+        apple: { label: "Apple" },
+    };
+
+    // "android" or "apple" from /<platform>/install or /<platform>/callback.
+    function platform(r) {
+        return r.uri.split("/")[1];
+    }
+
+    function redirectUri(name) {
+        return "https://wlan.renner.uno/" + name + "/callback";
+    }
+
+    const CLIENT_ID = "wlan-setup";
+    const AUTHORIZE = "https://auth.renner.uno/application/o/authorize/";
+    const STATE_COOKIE = "wlan_oauth_state";
+    const LIFETIME_DAYS = 29;
+
+    function random() {
+        const bytes = new Uint8Array(24);
+        crypto.getRandomValues(bytes);
+        return Buffer.from(bytes).toString("base64url");
+    }
+
+    function cookie(r, name) {
+        const all = r.headersIn["Cookie"] || "";
+        const parts = all.split(";");
+        for (let n = 0; n < parts.length; n++) {
+            const part = parts[n];
+            const i = part.indexOf("=");
+            if (i > 0 && part.substring(0, i).trim() === name) return part.substring(i + 1).trim();
+        }
+        return "";
+    }
+
+    function form(fields) {
+        return Object.keys(fields).map(k => encodeURIComponent(k) + "=" + encodeURIComponent(fields[k])).join("&");
+    }
+
+    const FORM = "application/x-www-form-urlencoded";
+    const JSON_CT = "application/json";
+    const CRED = /^[A-Za-z0-9._~+\/=-]+$/;
+
+    // authentik call through the internal /_ak location; the arguments
+    // become the Authorization and Content-Type headers there (raw, nginx
+    // does not decode $arg_*).
+    async function ak(r, method, path, scheme, cred, ct, body) {
+        if (!CRED.test(cred)) throw new Error(method + " " + path + ": no credential");
+        const args = "scheme=" + scheme + "&cred=" + cred + "&ct=" + ct;
+        const opts = { method: method, args: args };
+        if (body !== undefined) opts.body = body;
+        const reply = await r.subrequest("/_ak" + path, opts);
+        if (reply.status < 200 || reply.status > 299) {
+            throw new Error(method + " " + path + " -> " + reply.status + " " + reply.responseText.substring(0, 300));
+        }
+        return JSON.parse(reply.responseText);
+    }
+
+    function install(r) {
+        const name = platform(r);
+        const state = random();
+        r.headersOut["Set-Cookie"] = STATE_COOKIE + "=" + state +
+            "; Path=/" + name + "/; Max-Age=300; HttpOnly; Secure; SameSite=Lax";
+        r.return(302, AUTHORIZE + "?" + form({
+            response_type: "code",
+            client_id: CLIENT_ID,
+            redirect_uri: redirectUri(name),
+            scope: "openid profile goauthentik.io/api",
+            state: state,
+        }));
+    }
+
+    async function callback(r) {
+        const name = platform(r);
+        try {
+            const state = cookie(r, STATE_COOKIE);
+            if (!state || r.args.state !== state || !r.args.code) { r.return(400, "Bitte die Einrichtung neu starten.\n"); return; }
+            const client = Buffer.from(CLIENT_ID + ":" + process.env.WLAN_SETUP_CLIENT_SECRET).toString("base64");
+            const grant = await ak(r, "POST", "/application/o/token/", "Basic", client, FORM, form({
+                grant_type: "authorization_code",
+                code: r.args.code,
+                redirect_uri: redirectUri(name),
+            }));
+            const access = grant.access_token;
+            const me = await ak(r, "GET", "/api/v3/core/users/me/", "Bearer", access, "");
+            const user = me.user.username;
+            if (!USER.test(user) || user !== r.headersIn["X-authentik-username"]) { r.return(403); return; }
+
+            const now = new Date();
+            const stamp = now.toISOString().replace(/[-:]/g, "").replace(/\..*$/, "");
+            const identifier = "wlan-" + name + "-" + user.replace(/[^A-Za-z0-9-]/g, "-").toLowerCase() + "-" + stamp + "-" + random().substring(0, 6).replace(/[^A-Za-z0-9]/g, "x");
+            const expires = new Date(now.getTime() + LIFETIME_DAYS * 86400000).toISOString();
+            await ak(r, "POST", "/api/v3/core/tokens/", "Bearer", access, JSON_CT, JSON.stringify({
+                identifier: identifier,
+                intent: "app_password",
+                description: "WLAN " + PLATFORMS[name].label + ", " + now.toISOString().substring(0, 10) + " (wlan.renner.uno)",
+                expiring: true,
+                expires: expires,
+            }));
+            const key = (await ak(r, "GET", "/api/v3/core/tokens/" + identifier + "/view_key/", "Bearer", access, "")).key;
+
+            r.headersOut["Set-Cookie"] = STATE_COOKIE + "=; Path=/" + name + "/; Max-Age=0; HttpOnly; Secure; SameSite=Lax";
+            if (name === "apple") {
+                r.headersOut["Content-Type"] = "application/x-apple-aspen-config";
+                r.headersOut["Content-Disposition"] = 'attachment; filename="renner-unifi.mobileconfig"';
+                r.return(200, mobileconfig(user, key));
+            } else {
+                r.headersOut["Content-Type"] = "application/x-wifi-config";
+                r.headersOut["Content-Transfer-Encoding"] = "base64";
+                r.return(200, profile(user, key));
+            }
+        } catch (e) {
+            r.error("wlan-setup " + name + ": " + e.message);
+            r.return(502, "Die Einrichtung ist fehlgeschlagen.\n");
+        }
+    }
+
+    export default { install, callback };
+
+  index.html: |
+    <!doctype html>
+    <html lang="de">
+    <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>WLAN einrichten</title>
+    <style>
+      :root { --bg: #ffffff; --fg: #1d1d1f; --muted: #5f6368; --card: #f4f5f7; --accent: #0b63ce; --code: #e9ebef; }
+      @media (prefers-color-scheme: dark) {
+        :root { --bg: #121314; --fg: #e8eaed; --muted: #9aa0a6; --card: #1e1f22; --accent: #7cacf8; --code: #2a2b2f; }
+      }
+      * { box-sizing: border-box; }
+      body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
+      main { max-width: 42rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
+      h1 { font-size: 1.6rem; margin: 0 0 .25rem; }
+      h2 { font-size: 1.15rem; margin: 0 0 .5rem; }
+      p { margin: .5rem 0; }
+      .muted { color: var(--muted); }
+      section { background: var(--card); border-radius: 12px; padding: 1rem 1.1rem; margin: 1rem 0; }
+      section.current { outline: 2px solid var(--accent); }
+      a.button, button { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: .6rem 1rem; font: inherit; text-decoration: none; cursor: pointer; }
+      @media (prefers-color-scheme: dark) { a.button, button { color: #121314; } }
+      ol { padding-left: 1.3rem; margin: .5rem 0; }
+      pre { background: var(--code); border-radius: 8px; padding: .75rem; overflow-x: auto; white-space: pre-wrap; word-break: break-all; font-size: .85rem; margin: .5rem 0; }
+      details > summary { cursor: pointer; color: var(--accent); margin: 1.5rem 0 .5rem; }
+    </style>
+    </head>
+    <body>
+    <main>
+      <h1>WLAN einrichten</h1>
+      <p>WLAN <strong>Renner UniFi</strong> für dein Konto <strong id="user">…</strong>. Android, iPhone, iPad und Mac bekommen ein eigenes WLAN-App-Passwort; Windows und Linux melden sich mit deinem authentik-Passwort an.</p>
+
+      <div id="detected"></div>
+
+      <details id="others">
+        <summary>Andere Geräte</summary>
+        <div id="rest"></div>
+      </details>
+
+      <template id="t-android">
+        <section data-os="android">
+          <h2>Android</h2>
+          <p><a class="button" href="/android/install">Auf Android installieren</a></p>
+          <p class="muted">Das Gerät bekommt ein eigenes WLAN-App-Passwort in deinem authentik-Konto; dort gelöscht, ist das Gerät aus dem WLAN.</p>
+        </section>
+      </template>
+
+      <template id="t-apple">
+        <section data-os="apple">
+          <h2>iPhone, iPad, Mac</h2>
+          <p><a class="button" href="/apple/install">Profil laden</a></p>
+          <ol>
+            <li>iPhone/iPad: Einstellungen → „Profil geladen“ → Installieren. Mac: Systemeinstellungen → Allgemein → Geräteverwaltung → Profil doppelklicken.</li>
+            <li>Das Gerät verbindet sich danach selbst mit „Renner UniFi“.</li>
+          </ol>
+          <p class="muted">Das Gerät bekommt ein eigenes WLAN-App-Passwort in deinem authentik-Konto; dort gelöscht, ist das Gerät aus dem WLAN.</p>
+        </section>
+      </template>
+
+      <template id="t-windows">
+        <section data-os="windows">
+          <h2>Windows</h2>
+          <p><a class="button" href="/renner-unifi-wlan.cmd">Einrichtungsdatei laden</a></p>
+          <ol>
+            <li>Die geladene Datei doppelklicken. Fragt Windows nach („Der Computer wurde durch Windows geschützt“): „Weitere Informationen“ → „Trotzdem ausführen“.</li>
+            <li>Beim Verbinden Benutzername <strong class="u">…</strong> und dein Passwort eingeben.</li>
+          </ol>
+        </section>
+      </template>
+
+      <template id="t-linux">
+        <section data-os="linux">
+          <h2>Linux (NetworkManager)</h2>
+          <p>Im Terminal ausführen, danach fragt NetworkManager nach dem Passwort:</p>
+          <pre id="nmcli"></pre>
+          <p><button type="button" id="copy-nmcli">Befehl kopieren</button></p>
+        </section>
+      </template>
+    </main>
+    <script>
+    (function () {
+      var ua = navigator.userAgent;
+      var os = "other";
+      if (/Android/i.test(ua)) os = "android";
+      else if (/iPhone|iPad|iPod|Macintosh/i.test(ua)) os = "apple";
+      else if (/Windows/i.test(ua)) os = "windows";
+      else if (/Linux|X11/i.test(ua)) os = "linux";
+
+      var detected = document.getElementById("detected");
+      var rest = document.getElementById("rest");
+      ["android", "apple", "windows", "linux"].forEach(function (name) {
+        var node = document.getElementById("t-" + name).content.cloneNode(true);
+        if (name === os) { node.querySelector("section").classList.add("current"); detected.appendChild(node); }
+        else rest.appendChild(node);
+      });
+      if (os === "other") document.getElementById("others").open = true;
+
+      var currentUser = "";
+      function quote(s) { return "'" + s.replace(/'/g, "'\\''") + "'"; }
+      function render(user) {
+        currentUser = user;
+        var shown = user || "(dein Benutzername)";
+        document.getElementById("user").textContent = shown;
+        document.querySelectorAll(".u").forEach(function (el) { el.textContent = shown; });
+        document.getElementById("nmcli").textContent =
+          "nmcli connection add type wifi con-name 'Renner UniFi' ssid 'Renner UniFi' " +
+          "wifi-sec.key-mgmt wpa-eap 802-1x.eap ttls 802-1x.phase2-auth pap " +
+          "802-1x.anonymous-identity anonymous 802-1x.identity " + quote(user || "BENUTZERNAME") + " " +
+          "802-1x.domain-suffix-match radius.renner.uno 802-1x.system-ca-certs yes " +
+          "802-1x.password-flags 2 && nmcli --ask connection up 'Renner UniFi'";
+      }
+      render("");
+      fetch("/whoami", { credentials: "same-origin" })
+        .then(function (r) { return r.ok ? r.text() : ""; })
+        .then(function (t) { render(t.trim()); })
+        .catch(function () {});
+
+
+      document.getElementById("copy-nmcli").addEventListener("click", function () {
+        var text = document.getElementById("nmcli").textContent;
+        var btn = this;
+        navigator.clipboard.writeText(text).then(function () {
+          btn.textContent = "Kopiert";
+          setTimeout(function () { btn.textContent = "Befehl kopieren"; }, 2000);
+        });
+      });
+    })();
+    </script>
+    </body>
+    </html>

kubernetes/apps/authentik/wlan-setup-oauth.yaml

@@ -0,0 +1,32 @@
+# Client secret of the "WLAN setup" OAuth2 provider (dot1x-radius blueprint).
+# Generated once; the authentik worker reads it as WLAN_SETUP_CLIENT_SECRET
+# for the blueprint, wlan-setup reads it for the code exchange.
+apiVersion: generators.external-secrets.io/v1alpha1
+kind: Password
+metadata:
+  name: wlan-setup-oauth
+  namespace: authentik
+spec:
+  length: 64
+  digits: 16
+  symbols: 0
+  allowRepeat: true
+  noUpper: false
+  secretKeys:
+    - client_secret
+---
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: wlan-setup-oauth
+  namespace: authentik
+spec:
+  refreshPolicy: CreatedOnce
+  target:
+    name: wlan-setup-oauth
+  dataFrom:
+    - sourceRef:
+        generatorRef:
+          apiVersion: generators.external-secrets.io/v1alpha1
+          kind: Password
+          name: wlan-setup-oauth

kubernetes/apps/authentik/wlan-setup.yaml

@@ -0,0 +1,163 @@
+# wlan.renner.uno: setup page for the 802.1X WLAN "Renner UniFi" (Apple
+# profile, Windows import file, Linux nmcli command, Android Passpoint profile
+# with its own app password; config and files in wlan-setup-config.yaml).
+# Public, so a device can reach it before it is in the WLAN (mobile data,
+# Renner Gast). Any Authentik user passes the gate (no group); the page stores
+# no user credentials.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: wlan-setup
+  namespace: authentik
+  labels:
+    app.kubernetes.io/name: wlan-setup
+  annotations:
+    configmap.reloader.stakater.com/reload: wlan-setup
+    secret.reloader.stakater.com/reload: wlan-setup-oauth
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: wlan-setup
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: wlan-setup
+    spec:
+      automountServiceAccountToken: false
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 101
+        runAsGroup: 101
+        seccompProfile:
+          type: RuntimeDefault
+      containers:
+        - name: nginx
+          image: nginxinc/nginx-unprivileged:1.31-alpine@sha256:b5047b9b76845eac124358373c6852377c52e4b05834a47647e955dd91cb8f1e
+          env:
+            # Client secret of the "WLAN setup" OAuth2 provider (passpoint.js).
+            - name: WLAN_SETUP_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: wlan-setup-oauth
+                  key: client_secret
+          ports:
+            - name: http
+              containerPort: 8080
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+          resources:
+            requests:
+              cpu: 5m
+              memory: 16Mi
+            limits:
+              memory: 64Mi
+          volumeMounts:
+            # subPath: replaced on rollout, which the reloader annotation
+            # triggers on every ConfigMap change.
+            - name: main
+              mountPath: /etc/nginx/nginx.conf
+              subPath: nginx.conf
+              readOnly: true
+            - name: config
+              mountPath: /etc/nginx/conf.d
+              readOnly: true
+            - name: njs
+              mountPath: /etc/nginx/njs
+              readOnly: true
+            - name: html
+              mountPath: /usr/share/nginx/html
+              readOnly: true
+            # pid file and temp paths of the unprivileged image.
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: main
+          configMap:
+            name: wlan-setup
+            items:
+              - key: nginx.conf
+                path: nginx.conf
+        - name: config
+          configMap:
+            name: wlan-setup
+            items:
+              - key: default.conf
+                path: default.conf
+        - name: njs
+          configMap:
+            name: wlan-setup
+            items:
+              - key: passpoint.js
+                path: passpoint.js
+        - name: html
+          configMap:
+            name: wlan-setup
+            items:
+              - key: index.html
+                path: index.html
+              - key: renner-unifi-wlan.cmd
+                path: renner-unifi-wlan.cmd
+        - name: tmp
+          emptyDir:
+            medium: Memory
+            sizeLimit: 16Mi
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: wlan-setup
+  namespace: authentik
+  labels:
+    app.kubernetes.io/name: wlan-setup
+spec:
+  ipFamilyPolicy: PreferDualStack
+  selector:
+    app.kubernetes.io/name: wlan-setup
+  ports:
+    - name: http
+      port: 80
+      targetPort: http
+      protocol: TCP
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: wlan-setup
+  namespace: authentik
+  labels:
+    # Public: Cloudflare CNAME → NetBird proxy → Traefik.
+    dns.renner.uno/public: "true"
+    netbird.renner.uno/public: "true"
+  annotations:
+    traefik.ingress.kubernetes.io/router.middlewares: authentik-gate@kubernetescrd
+    cert-manager.io/cluster-issuer: letsencrypt-cluster
+spec:
+  ingressClassName: traefik
+  tls:
+    - hosts:
+        - wlan.renner.uno
+      secretName: wlan-setup-tls
+  rules:
+    - host: wlan.renner.uno
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: wlan-setup
+                port:
+                  number: 80

kubernetes/apps/home-assistant-iot/shelly-manager-deployment.yaml

@@ -64,7 +64,7 @@ spec:
           type: RuntimeDefault
       containers:
         - name: shelly-manager
-          image: gitea.renner.uno/konairius/shelly-manager:2026-11-02-1412 # {"$imagepolicy": "flux-system:shelly-manager"}
+          image: gitea.renner.uno/konairius/shelly-manager:2026-11-05-0732 # {"$imagepolicy": "flux-system:shelly-manager"}
           imagePullPolicy: IfNotPresent
           ports:
             - name: http

kubernetes/apps/home-assistant/deployment.yaml

@@ -128,7 +128,7 @@ spec:
               memory: 32Mi
       containers:
         - name: home-assistant
-          image: ghcr.io/home-assistant/home-assistant:2026.10.4 # {"$imagepolicy": "flux-system:home-assistant"}
+          image: ghcr.io/home-assistant/home-assistant:2026.11.0 # {"$imagepolicy": "flux-system:home-assistant"}
           env:
             - name: TZ
               value: Europe/Berlin

kubernetes/apps/immich/machine-learning.yaml

@@ -32,7 +32,7 @@ spec:
           type: RuntimeDefault
       containers:
         - name: immich-machine-learning
-          image: ghcr.io/immich-app/immich-machine-learning:v3.3.5 # {"$imagepolicy": "flux-system:immich-machine-learning"}
+          image: ghcr.io/immich-app/immich-machine-learning:v3.3.6 # {"$imagepolicy": "flux-system:immich-machine-learning"}
           ports:
             - name: http
               containerPort: 3003

kubernetes/apps/immich/server.yaml

@@ -87,7 +87,7 @@ spec:
               mountPath: /ca
       containers:
         - name: immich-server
-          image: ghcr.io/immich-app/immich-server:v3.3.5 # {"$imagepolicy": "flux-system:immich-server"}
+          image: ghcr.io/immich-app/immich-server:v3.3.6 # {"$imagepolicy": "flux-system:immich-server"}
           ports:
             - name: http
               containerPort: 3001

kubernetes/apps/monitoring-rules/kustomization.yaml

@@ -91,4 +91,6 @@ resources:
   # Gitea's data volume. It filled twice (#336, REN-580) and the chart's
   # KubePersistentVolumeFillingUp warned 33 minutes before the second (REN-583).
   - prometheusrule-gitea.yaml
+  # 802.1X: FreeRADIUS and the authentik outpost behind it.
+  - prometheusrule-radius.yaml
   - probes-blackbox.yaml

kubernetes/apps/monitoring-rules/prometheusrule-radius.yaml

@@ -0,0 +1,40 @@
+# 802.1X RADIUS chain: FreeRADIUS (TTLS front end) and the authentik outpost
+# behind it, 2 replicas each. Either at 0 means no 802.1X logins.
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: radius
+  namespace: monitoring
+  labels:
+    release: kube-prometheus-stack
+spec:
+  groups:
+    - name: radius.rules
+      rules:
+        - alert: RadiusDeploymentDown
+          expr: >-
+            kube_deployment_status_replicas_available{namespace="authentik",deployment=~"freeradius|ak-outpost-8021x-radius"}
+            < 1
+          for: 2m
+          labels:
+            severity: critical
+          annotations:
+            summary: "{{ $labels.deployment }} has no available replica"
+            description: >-
+              Deployment {{ $labels.deployment }} (ns authentik) has had no
+              available replica for 2m. 802.1X logins (radius.renner.uno) fail.
+              Check `kubectl -n authentik describe deploy {{ $labels.deployment }}`
+              and its pod logs.
+        - alert: RadiusDeploymentDegraded
+          expr: >-
+            kube_deployment_status_replicas_available{namespace="authentik",deployment=~"freeradius|ak-outpost-8021x-radius"}
+            < 2
+          for: 15m
+          labels:
+            severity: warning
+          annotations:
+            summary: "{{ $labels.deployment }} has {{ $value }} of 2 replicas available"
+            description: >-
+              Deployment {{ $labels.deployment }} (ns authentik) has run with
+              fewer than 2 available replicas for 15m. Logins still work but one
+              more failure stops them.

kubernetes/apps/navidrome/lidarr.yaml

@@ -93,7 +93,7 @@ spec:
           type: RuntimeDefault
       containers:
         - name: lidarr
-          image: ghcr.io/linuxserver/lidarr:3.1.6.5079-ls46 # {"$imagepolicy": "flux-system:lidarr"}
+          image: ghcr.io/linuxserver/lidarr:3.1.6.5079-ls47 # {"$imagepolicy": "flux-system:lidarr"}
           env:
             - name: PUID
               value: "1000"
@@ -140,7 +140,7 @@ spec:
               drop: ["ALL"]
               add: ["CHOWN", "DAC_OVERRIDE", "FOWNER", "SETGID", "SETUID"]
         - name: reconcile
-          image: ghcr.io/linuxserver/lidarr:3.1.6.5079-ls46 # {"$imagepolicy": "flux-system:lidarr"}
+          image: ghcr.io/linuxserver/lidarr:3.1.6.5079-ls47 # {"$imagepolicy": "flux-system:lidarr"}
           command: ["sh", "/scripts/reconcile.sh"]
           volumeMounts:
             - name: config

kubernetes/apps/trmnl/terminus.yaml

@@ -134,7 +134,7 @@ spec:
         # is a device-bricking class of risk. Bumps are a reviewed, manual
         # act — see kubernetes/infrastructure/image-automation/README.md.
         - name: terminus
-          image: ghcr.io/usetrmnl/terminus:0.79.0 # {"$imagepolicy": "flux-system:terminus"}
+          image: ghcr.io/usetrmnl/terminus:0.80.0 # {"$imagepolicy": "flux-system:terminus"}
           ports:
             - name: http
               containerPort: 2345
@@ -197,7 +197,7 @@ spec:
             capabilities:
               drop: ["ALL"]
         - name: sidekiq
-          image: ghcr.io/usetrmnl/terminus:0.79.0 # {"$imagepolicy": "flux-system:terminus"}
+          image: ghcr.io/usetrmnl/terminus:0.80.0 # {"$imagepolicy": "flux-system:terminus"}
           command: ["bundle", "exec", "sidekiq", "-r", "./config/sidekiq.rb"]
           envFrom:
             - configMapRef:

kubernetes/infrastructure/cilium/helmrelease.yaml

@@ -95,19 +95,20 @@ spec:
       # VLAN-tagged frames, accounted as "VLAN traffic disallowed by VLAN
       # filter" in cilium_drop_count_total.
       #
-      # Only VLAN 30 (v30iot) needs listing. Cilium attaches to devices that
-      # carry an address, so it sees mgmt0's frames already untagged by the
-      # 8021q layer — nothing for a VLAN filter to match. ens19 is deliberately
-      # address-less, so its frames only meet the filter on the shared parent,
-      # still tagged. Adding 40 would change nothing and would touch the
-      # datapath carrying etcd and the API.
+      # Only the address-less macvlan parents need listing: VLAN 30 (ens19,
+      # v30iot) and VLAN 11 (radius0, freeradius-udm). Cilium attaches to
+      # devices that carry an address, so it sees mgmt0's frames already
+      # untagged by the 8021q layer — nothing for a VLAN filter to match.
+      # ens19 and radius0 are deliberately address-less, so their frames only
+      # meet the filter on the shared parent, still tagged. Adding 40 would
+      # change nothing and would touch the datapath carrying etcd and the API.
       #
       # The symptom when this is wrong is not a DHCP timeout: a tc-layer drop
       # reaches an AF_PACKET sender as ENOBUFS, so the CNI dhcp plugin reports
       # "no buffer space available" (#592).
       #
       # Same three-copy problem as policyMapMax above. Takes an agent restart.
-      vlanBypass: [30]
+      vlanBypass: [30, 11]
       # Let pods reach the cluster's own LoadBalancer external IPs; Cilium
       # redirects the socket directly to the backend pod instead of sending
       # traffic out to the VIP and back (which fails with L2 announcements).

kubernetes/infrastructure/image-automation/README.md

@@ -46,6 +46,7 @@ existing `flux-system` GitRepository whose Secret was created by
 | authentik-gate-sync | `YYYY-MM-DD-HHMM` | In-house (build-ci-images.yml); newest tag wins |
 | kuma-sync | `YYYY-MM-DD-HHMM` | In-house (build-ci-images.yml); newest tag wins |
 | cloudflare-lb-sync | `YYYY-MM-DD-HHMM` | In-house (build-ci-images.yml); newest tag wins |
+| wlan-setup | `YYYY-MM-DD-HHMM` | In-house (build-ci-images.yml); newest tag wins |
 | secret-rotator | `YYYY-MM-DD` | In-house (build-ci-images.yml); newest tag wins; staged: only the Home Assistant rotation CronJobs carry the marker so far |
 | gatus | `5.x` | v-prefix filter |
 | velero-plugin-for-aws | `1.13.x` | Tight: must match velero server major.minor |

kubernetes/infrastructure/image-automation/freeradius.yaml

@@ -0,0 +1,23 @@
+apiVersion: image.toolkit.fluxcd.io/v1
+kind: ImageRepository
+metadata:
+  name: freeradius
+  namespace: flux-system
+spec:
+  image: docker.io/freeradius/freeradius-server
+  interval: 1h
+---
+apiVersion: image.toolkit.fluxcd.io/v1
+kind: ImagePolicy
+metadata:
+  name: freeradius
+  namespace: flux-system
+spec:
+  imageRepositoryRef:
+    name: freeradius
+  filterTags:
+    pattern: '^(?P<v>3\.2\.\d+)-alpine$'
+    extract: '$v'
+  policy:
+    semver:
+      range: "3.2.x"

kubernetes/infrastructure/image-automation/kustomization.yaml

@@ -12,6 +12,7 @@ resources:
   - cloudflare-lb-sync.yaml
   - cni-plugins.yaml
   - cnpg-barman-plugin.yaml
+  - freeradius.yaml
   - gatus.yaml
   - gitea-mcp.yaml
   - gotenberg.yaml
@@ -41,5 +42,6 @@ resources:
   - velero-plugin-for-aws.yaml
   - vsftpd.yaml
   - wiki.yaml
+  - wlan-setup.yaml
   - woodpecker.yaml
   - wyoming.yaml

kubernetes/infrastructure/image-automation/wlan-setup.yaml

@@ -0,0 +1,23 @@
+apiVersion: image.toolkit.fluxcd.io/v1
+kind: ImageRepository
+metadata:
+  name: wlan-setup
+  namespace: flux-system
+spec:
+  image: gitea.renner.uno/gitea_admin/wlan-setup
+  interval: 30m
+---
+# build-ci-images.yml tags each build YYYY-MM-DD-HHMM; newest wins.
+apiVersion: image.toolkit.fluxcd.io/v1
+kind: ImagePolicy
+metadata:
+  name: wlan-setup
+  namespace: flux-system
+spec:
+  imageRepositoryRef:
+    name: wlan-setup
+  filterTags:
+    pattern: '^\d{4}-\d{2}-\d{2}-\d{4}$'
+  policy:
+    alphabetical:
+      order: asc

kubernetes/talos/patches/k8s-1.yaml

@@ -8,6 +8,10 @@ machine:
     # 10.2.30.0/24 route makes node replies bypass the UDM and breaks every
     # DNATed flow.
     net.ipv6.conf.ens19.disable_ipv6: "1"
+    # radius0 (VLAN 11) is LINK ONLY as well: the macvlan parent for the
+    # FreeRADIUS attachment. VLAN 11 announces RAs; the node must not
+    # autoconfigure from them.
+    net.ipv6.conf.radius0.disable_ipv6: "1"
     # These two sit on the untagged fallback network, where nothing may run.
     # Left enabled they autoconfigure a ULA and an IPv6 default route from its
     # RAs, which ties with mgmt0's and costs the cluster IPv6 egress.
@@ -168,6 +172,17 @@ vlanID: 30
 parent: uplink
 up: true
 ---
+# VLAN 11, UniFi "(11) RADIUS": link only, no addresses, no DHCP. Macvlan
+# parent of the freeradius-udm attachment
+# (kubernetes/apps/authentik/freeradius-network-attachment.yaml), which names
+# it as `master`; renaming this link means editing that too.
+apiVersion: v1alpha1
+kind: VLANConfig
+name: radius0
+vlanID: 11
+parent: uplink
+up: true
+---
 # Pod network, VLAN 48. Node-to-node only: the VXLAN overlay rides it once the
 # kubelet node IP moves here, and nothing on it is routed off the switch.
 #

kubernetes/talos/patches/k8s-2.yaml

@@ -7,6 +7,8 @@ machine:
     # macvlan parent for the v30iot pod attachments; host addresses on that L2
     # make node replies bypass the UDM and break every UDM-DNATed flow.
     net.ipv6.conf.ens19.disable_ipv6: "1"
+    # radius0 (VLAN 11): link only — see k8s-1.yaml.
+    net.ipv6.conf.radius0.disable_ipv6: "1"
     # Same for the physical ports on the untagged fallback network: left
     # enabled they take an IPv6 default route from its RAs and cost the
     # cluster IPv6 egress.
@@ -115,6 +117,14 @@ vlanID: 30
 parent: uplink
 up: true
 ---
+# VLAN 11, "(11) RADIUS": link only, no host addressing — see k8s-1.yaml.
+apiVersion: v1alpha1
+kind: VLANConfig
+name: radius0
+vlanID: 11
+parent: uplink
+up: true
+---
 # Pod network, VLAN 48. Node-to-node only, statically addressed, no gateway
 # and no DHCP — see k8s-1.yaml.
 apiVersion: v1alpha1

kubernetes/talos/patches/k8s-3.yaml

@@ -4,6 +4,8 @@ machine:
   sysctls:
     # v30iot NIC carries no host addressing — see k8s-1.yaml.
     net.ipv6.conf.ens19.disable_ipv6: "1"
+    # radius0 (VLAN 11): link only — see k8s-1.yaml.
+    net.ipv6.conf.radius0.disable_ipv6: "1"
     # Same for the physical ports on the untagged fallback network — see
     # k8s-1.yaml.
     net.ipv6.conf.uplink.disable_ipv6: "1"
@@ -102,6 +104,14 @@ vlanID: 30
 parent: uplink
 up: true
 ---
+# VLAN 11, "(11) RADIUS": link only, no host addressing — see k8s-1.yaml.
+apiVersion: v1alpha1
+kind: VLANConfig
+name: radius0
+vlanID: 11
+parent: uplink
+up: true
+---
 # Pod network, VLAN 48. Node-to-node only, statically addressed, no gateway
 # and no DHCP — see k8s-1.yaml.
 apiVersion: v1alpha1

renovate.json

@@ -7,7 +7,8 @@
     "flux",
     "kubernetes",
     "woodpecker",
-    "dockerfile"
+    "dockerfile",
+    "custom.regex"
   ],
   "ignorePaths": [
     "kubernetes/clusters/homelab/flux-system/**",
@@ -23,6 +24,20 @@
       "/^kubernetes/.+\\.ya?ml$/"
     ]
   },
+  "customManagers": [
+    {
+      "customType": "regex",
+      "description": "Container images of the Ansible roles: `edge_<name>_image: <image>:<tag>@<digest>` in ansible/roles/*/defaults/main.yml. No other manager reads these files.",
+      "managerFilePatterns": [
+        "/^ansible/roles/[^/]+/defaults/main\\.ya?ml$/"
+      ],
+      "matchStrings": [
+        "(?:^|\\n)edge_[a-z0-9_]+_image:[ \\t]*[\"']?(?<depName>[^\\s:@\"']+):(?<currentValue>[^\\s@\"']+)(?:@(?<currentDigest>sha256:[a-f0-9]{64}))?"
+      ],
+      "datasourceTemplate": "docker",
+      "versioningTemplate": "docker"
+    }
+  ],
   "packageRules": [
     {
       "description": "Flux image automation (kubernetes/infrastructure/image-automation) already bumps these images. Renovate must not open a second, competing update. Keep this list equal to the ImageRepository images there.",
@@ -134,6 +149,20 @@
       "groupName": "CI non-major",
       "groupSlug": "ci-minor-patch"
     },
+    {
+      "description": "Edge-host images (ansible/): no pipeline deploys them, the play runs from a workstation after the merge. One PR of its own, so the merge and the play run go together.",
+      "matchFileNames": [
+        "ansible/**"
+      ],
+      "matchUpdateTypes": [
+        "patch",
+        "minor",
+        "digest",
+        "pin"
+      ],
+      "groupName": "edge hosts (ansible)",
+      "groupSlug": "edge-hosts-ansible"
+    },
     {
       "description": "Stateful apps and the CNI: one PR each, never in a group (REN-315). A git revert does not undo a DB migration or a CNI change, so each needs its own review and, where it can disrupt the cluster, a window.",
       "matchUpdateTypes": [

tests/radius/README.md

@@ -0,0 +1,51 @@
+# FreeRADIUS functional test
+
+```sh
+tests/radius/run.sh
+```
+
+Runs the production FreeRADIUS config from
+`kubernetes/apps/authentik/freeradius-config.yaml` (rendered through the
+projected volume in `freeradius.yaml`, same image, args and secret env names)
+in Docker against a mock authentik outpost and a mock UDM RADIUS, and drives
+it with `eapol_test` (EAP-TTLS, inner PAP) as a NAS in the test client ranges
+`10.2.50.0/24` and `fd02:50::/64`. The v6 cases (`v6-*`) hit the IPv6
+listeners and client `test6`. Cases use outer identity `anonymous` unless
+noted.
+
+| Case | Expected |
+|---|---|
+| `vlan-tunnel` (outpost sends Tunnel-* and Cisco-AV-Pair) | SUCCESS, Tunnel-* VLAN 50, no Cisco-AV-Pair |
+| `vlan-avpair` (outpost sends only `Cisco-AV-Pair = "dot1x-vlan=50"`) | SUCCESS, Tunnel-* VLAN 50, no Cisco-AV-Pair |
+| `novlan` (Accept without VLAN) | FAILURE (Access-Reject) |
+| wrong password / unknown user (Reject without Message-Authenticator) | FAILURE (Access-Reject) within 1 s |
+| Accounting-Request | answered locally, nothing sent to the outpost or the UDM |
+| `anon-realm` (outer identity `Anonymous@Example.Org`) | local TTLS, as `vlan-tunnel` |
+| `udm-accept`, `v6-udm-accept` (outer identity = account name) | both EAP rounds reach the mock UDM (second with its `State`); its Access-Accept reaches the NAS with Tunnel-* VLAN 200 and MS-MPPE keys unchanged |
+| `udm-reject` | the mock UDM's Access-Reject reaches the NAS within 1 s |
+| all `anonymous` cases | never reach the mock UDM |
+| `recovery` | outpost stalls until marked dead, then returns: login succeeds within 20 s |
+
+Pieces:
+
+- `mock_outpost.py`: stand-in outpost on UDP 1812, reachable under the
+  outpost Service FQDN through a Docker network alias.
+- `mock_udm.py`: stand-in UDM RADIUS at the `udm` home server address from
+  `proxy.conf` (`10.2.11.1`), on a second internal bridge `radtest-udm` (that
+  address's /24, no host address). FreeRADIUS gets a second interface there,
+  as `net1` in the pod: only the connected /24, no default route, and the
+  proxy socket picks it by route lookup. The macvlan/DHCP attachment itself
+  is not tested. Answers round 1 with Challenge + `State` +
+  EAP-TTLS Start (or Reject for `endpoint-reject`), round 2 with Accept +
+  EAP-Success; terminates no EAP.
+- `eapol.Dockerfile`: `eapol_test` from Debian `eapoltest`.
+- Docker network `radtest`: internal bridge on `10.2.50.0/24` and
+  `fd02:50::/64` with no host address (`inhibit_ipv4`,
+  `gateway_mode_ipv6=isolated`), so the workstation LAN routes are untouched.
+
+Requires Docker, `openssl` and `yq` (the jq wrapper). Secrets, password and
+certificates are generated dummies. `RADTEST_DEBUG=1` runs radiusd with `-xx`
+and prints all logs. Containers, network and temp files are removed on exit.
+
+`live.sh` logs in against the deployed FreeRADIUS instead; usage in
+`docs/radius/dot1x.md` ("Live login check").

tests/radius/eapol.Dockerfile

@@ -0,0 +1,4 @@
+FROM debian:trixie-slim
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends eapoltest \
+ && rm -rf /var/lib/apt/lists/*

tests/radius/live.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+# Live EAP-TTLS/PAP login against the deployed FreeRADIUS from a test client
+# (10.2.50.0/24 / fd02:50::/64, client "test"/"test6").
+#
+# Usage: tests/radius/live.sh <server-ip> <identity> <password-file> <secret-file> [count]
+#   password-file: the password on the first line, or `export NAME=value` lines
+#                  (LIVE_PASSWORD_VAR selects the variable, default CLAUDE_BOT_TOKEN)
+#   secret-file:   `bao kv get` output of apps/radius, or the bare
+#                  DOT1X_TEST_SECRET on the first line
+#   count:         number of logins (default 1)
+#   LIVE_SOURCE:   optional local address for eapol_test -A (must be in a
+#                  test client range)
+# Prints one line per login: result, duration, VLAN. Secrets are never printed.
+set -euo pipefail
+
+server="$1"
+identity="$2"
+password_file="$3"
+secret_file="$4"
+count="${5:-1}"
+password_var="${LIVE_PASSWORD_VAR:-CLAUDE_BOT_TOKEN}"
+
+read_password() {
+  local line
+  line=$(grep -m1 -E "^export ${password_var}=" "$password_file" || true)
+  if [ -n "$line" ]; then
+    line="${line#*=}"
+    line="${line#\"}"; line="${line%\"}"
+    line="${line#\'}"; line="${line%\'}"
+    printf '%s' "$line"
+  else
+    head -n1 "$password_file"
+  fi
+}
+
+read_secret() {
+  local s
+  s=$(sed -n 's/.*DOT1X_TEST_SECRET:\([^] ]*\).*/\1/p' "$secret_file")
+  if [ -n "$s" ]; then printf '%s' "$s"; else head -n1 "$secret_file"; fi
+}
+
+work=$(mktemp -d)
+trap 'rm -rf "$work"' EXIT
+chmod 700 "$work"
+
+password=$(read_password)
+secret=$(read_secret)
+[ -n "$password" ] || { echo "no password found in $password_file" >&2; exit 2; }
+[ -n "$secret" ] || { echo "no DOT1X_TEST_SECRET found in $secret_file" >&2; exit 2; }
+
+umask 077
+cat > "$work/eapol.conf" <<EOF
+network={
+	ssid="Renner Test"
+	key_mgmt=WPA-EAP
+	eap=TTLS
+	identity="${identity}"
+	anonymous_identity="anonymous"
+	ca_cert="/etc/ssl/certs/ca-certificates.crt"
+	domain_suffix_match="radius.renner.uno"
+	phase2="auth=PAP"
+	password="${password}"
+}
+EOF
+
+for i in $(seq 1 "$count"); do
+  start=$(date +%s%N)
+  out=$(eapol_test -c "$work/eapol.conf" -a "$server" ${LIVE_SOURCE:+-A "$LIVE_SOURCE"} -s "$secret" -t 10 2>&1 || true)
+  end=$(date +%s%N)
+  ms=$(( (end - start) / 1000000 ))
+  result=$(tail -n1 <<<"$out")
+  case "$result" in SUCCESS|FAILURE) ;; *) result="NO-RESULT" ;; esac
+  # Attribute lines of the Access-Accept as the NAS received it (hex values).
+  attrs=$(awk '/RADIUS message: code=2 /{f=1; next} f && /^   /{print; next} f{f=0}' <<<"$out")
+  attr() { awk -v a="Attribute $1 " 'index($0, a){getline; sub(/^ *Value: /, ""); print; exit}' <<<"$attrs"; }
+  echo "login $i: $result ${ms}ms tunnel-type=[$(attr 64)] medium=[$(attr 65)] group-id=[$(attr 81)]"
+done

tests/radius/mock_outpost.py

@@ -0,0 +1,120 @@
+"""Stand-in for the authentik RADIUS outpost `8021x-radius` (UDP 1812).
+
+Users (password MOCK_PASSWORD):
+  vlan-tunnel  Accept: Tunnel-Type/Medium-Type/Private-Group-Id 50 + Cisco-AV-Pair
+  vlan-avpair  Accept: Cisco-AV-Pair "dot1x-vlan=50" only
+  novlan       Accept without VLAN
+  anything else, or a wrong password: Access-Reject WITHOUT Message-Authenticator
+Accepts carry Message-Authenticator; rejects do not (authentik behaviour).
+"""
+
+import hashlib
+import hmac
+import os
+import socket
+import struct
+
+SECRET = os.environ["MOCK_SECRET"].encode()
+
+ACCESS_REQUEST, ACCESS_ACCEPT, ACCESS_REJECT = 1, 2, 3
+ATTR_USER_NAME, ATTR_USER_PASSWORD, ATTR_MESSAGE_AUTHENTICATOR = 1, 2, 80
+
+
+def attr(t, value):
+    return bytes([t, len(value) + 2]) + value
+
+
+def vsa(vendor, vendor_type, value):
+    return attr(26, struct.pack("!I", vendor) + bytes([vendor_type, len(value) + 2]) + value)
+
+
+TUNNEL_VLAN_50 = (
+    attr(64, b"\x00\x00\x00\x0d")  # Tunnel-Type = VLAN
+    + attr(65, b"\x00\x00\x00\x06")  # Tunnel-Medium-Type = IEEE-802
+    + attr(81, b"50")  # Tunnel-Private-Group-Id = "50"
+)
+AVPAIR_VLAN_50 = vsa(9, 1, b"dot1x-vlan=50")  # Cisco-AV-Pair
+
+REPLIES = {
+    b"vlan-tunnel": TUNNEL_VLAN_50 + AVPAIR_VLAN_50,
+    b"vlan-avpair": AVPAIR_VLAN_50,
+    b"novlan": b"",
+}
+
+
+def parse_attrs(data):
+    out, i = [], 0
+    while i + 2 <= len(data):
+        t, length = data[i], data[i + 1]
+        if length < 2:
+            break
+        out.append((t, i, data[i + 2 : i + length]))
+        i += length
+    return out
+
+
+def decrypt_password(enc, authenticator):
+    out, last = b"", authenticator
+    for i in range(0, len(enc), 16):
+        key = hashlib.md5(SECRET + last).digest()
+        chunk = enc[i : i + 16]
+        out += bytes(a ^ b for a, b in zip(chunk, key))
+        last = chunk
+    return out.rstrip(b"\x00")
+
+
+def request_ma_ok(packet, attrs):
+    for t, off, value in attrs:
+        if t == ATTR_MESSAGE_AUTHENTICATOR:
+            start = 20 + off + 2
+            zeroed = packet[:start] + b"\x00" * 16 + packet[start + 16 :]
+            return hmac.compare_digest(hmac.new(SECRET, zeroed, hashlib.md5).digest(), value)
+    return None
+
+
+def build_reply(code, ident, req_auth, attrs, with_ma):
+    if with_ma:
+        attrs += attr(ATTR_MESSAGE_AUTHENTICATOR, b"\x00" * 16)
+    hdr = struct.pack("!BBH", code, ident, 20 + len(attrs))
+    if with_ma:
+        ma = hmac.new(SECRET, hdr + req_auth + attrs, hashlib.md5).digest()
+        attrs = attrs[:-16] + ma
+    resp_auth = hashlib.md5(hdr + req_auth + attrs + SECRET).digest()
+    return hdr + resp_auth + attrs
+
+
+def main():
+    password = os.environ["MOCK_PASSWORD"].encode()
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    sock.bind(("0.0.0.0", 1812))
+    print("mock outpost listening on udp/1812", flush=True)
+    while True:
+        packet, peer = sock.recvfrom(4096)
+        if len(packet) < 20:
+            continue
+        code, ident, _length = struct.unpack("!BBH", packet[:4])
+        req_auth = packet[4:20]
+        if code != ACCESS_REQUEST:
+            print(f"peer={peer[0]} code={code} ignored", flush=True)
+            continue
+        attrs = parse_attrs(packet[20:])
+        user = next((v for t, _, v in attrs if t == ATTR_USER_NAME), b"")
+        enc = next((v for t, _, v in attrs if t == ATTR_USER_PASSWORD), b"")
+        password_ok = decrypt_password(enc, req_auth) == password
+        ma = request_ma_ok(packet, attrs)
+        if password_ok and user in REPLIES:
+            out = build_reply(ACCESS_ACCEPT, ident, req_auth, REPLIES[user], True)
+            result = "accept"
+        else:
+            out = build_reply(ACCESS_REJECT, ident, req_auth, b"", False)
+            result = "reject"
+        print(
+            f"peer={peer[0]} code={code} user={user.decode(errors='replace')} "
+            f"password_ok={password_ok} request_ma={ma} -> {result}",
+            flush=True,
+        )
+        sock.sendto(out, peer)
+
+
+if __name__ == "__main__":
+    main()

tests/radius/mock_udm.py

@@ -0,0 +1,120 @@
+"""Stand-in for the UDM RADIUS (UDP 1812) that UniFi Endpoint logins go to.
+
+Terminates nothing; logs what arrives and answers just enough EAP to prove
+that FreeRADIUS proxies the whole conversation:
+  round 1 (EAP-Response/Identity, no State)
+    identity endpoint-reject  Access-Reject + EAP-Failure
+    any other identity        Access-Challenge + State + EAP-Request/TTLS-Start
+  round 2 (State from round 1)
+    Access-Accept + EAP-Success, Tunnel-* VLAN 200, MS-MPPE-Recv-Key 0x11 * 32,
+    MS-MPPE-Send-Key 0x22 * 32
+  no EAP-Message (status probe), unknown State  Access-Reject
+All replies carry Message-Authenticator and echo Proxy-State.
+"""
+
+import hashlib
+import os
+import socket
+import struct
+
+from mock_outpost import ATTR_USER_NAME, attr, build_reply, parse_attrs, request_ma_ok, vsa
+
+SECRET = os.environ["MOCK_SECRET"].encode()
+
+ACCESS_REQUEST, ACCESS_ACCEPT, ACCESS_REJECT, ACCESS_CHALLENGE = 1, 2, 3, 11
+ATTR_STATE, ATTR_PROXY_STATE, ATTR_EAP_MESSAGE = 24, 33, 79
+EAP_REQUEST, EAP_RESPONSE, EAP_SUCCESS, EAP_FAILURE = 1, 2, 3, 4
+EAP_IDENTITY, EAP_TTLS = 1, 21
+
+STATE = b"udm-mock-state-1"
+RECV_KEY = b"\x11" * 32
+SEND_KEY = b"\x22" * 32
+TUNNEL_VLAN_200 = (
+    attr(64, b"\x00\x00\x00\x0d")  # Tunnel-Type = VLAN
+    + attr(65, b"\x00\x00\x00\x06")  # Tunnel-Medium-Type = IEEE-802
+    + attr(81, b"200")  # Tunnel-Private-Group-Id = "200"
+)
+
+
+def mppe_key(key, req_auth, salt):
+    """RFC 2548 2.4.2 encryption of an MS-MPPE key."""
+    plain = bytes([len(key)]) + key
+    plain += b"\x00" * (-len(plain) % 16)
+    out, last = b"", req_auth + salt
+    for i in range(0, len(plain), 16):
+        b = hashlib.md5(SECRET + last).digest()
+        chunk = bytes(p ^ k for p, k in zip(plain[i : i + 16], b))
+        out += chunk
+        last = chunk
+    return salt + out
+
+
+def eap(code, ident, payload=b""):
+    return struct.pack("!BBH", code, ident, 4 + len(payload)) + payload
+
+
+def main():
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    sock.bind(("0.0.0.0", 1812))
+    print("mock udm listening on udp/1812", flush=True)
+    while True:
+        packet, peer = sock.recvfrom(4096)
+        if len(packet) < 20:
+            continue
+        code, ident, _length = struct.unpack("!BBH", packet[:4])
+        req_auth = packet[4:20]
+        if code != ACCESS_REQUEST:
+            print(f"peer={peer[0]} code={code} ignored", flush=True)
+            continue
+        attrs = parse_attrs(packet[20:])
+        user = next((v for t, _, v in attrs if t == ATTR_USER_NAME), b"").decode(errors="replace")
+        state = next((v for t, _, v in attrs if t == ATTR_STATE), None)
+        eap_msg = b"".join(v for t, _, v in attrs if t == ATTR_EAP_MESSAGE)
+        echo = b"".join(attr(ATTR_PROXY_STATE, v) for t, _, v in attrs if t == ATTR_PROXY_STATE)
+        ma = request_ma_ok(packet, attrs)
+
+        if len(eap_msg) < 5:
+            reply = build_reply(ACCESS_REJECT, ident, req_auth, echo, True)
+            print(f"peer={peer[0]} probe user={user} request_ma={ma} -> reject", flush=True)
+        elif state is None:
+            eap_id = eap_msg[1]
+            eap_ok = eap_msg[0] == EAP_RESPONSE and eap_msg[4] == EAP_IDENTITY
+            identity = eap_msg[5:].decode(errors="replace")
+            if identity == "endpoint-reject":
+                body = attr(ATTR_EAP_MESSAGE, eap(EAP_FAILURE, eap_id))
+                reply = build_reply(ACCESS_REJECT, ident, req_auth, echo + body, True)
+                result = "reject"
+            else:
+                body = attr(ATTR_STATE, STATE) + attr(
+                    ATTR_EAP_MESSAGE, eap(EAP_REQUEST, (eap_id + 1) & 0xFF, bytes([EAP_TTLS, 0x20]))
+                )
+                reply = build_reply(ACCESS_CHALLENGE, ident, req_auth, echo + body, True)
+                result = "challenge"
+            print(
+                f"peer={peer[0]} round=1 user={user} eap_identity_response={eap_ok} "
+                f"eap_identity={identity} request_ma={ma} -> {result}",
+                flush=True,
+            )
+        elif state == STATE:
+            eap_id = eap_msg[1]
+            eap_type = eap_msg[4]
+            body = (
+                TUNNEL_VLAN_200
+                + vsa(311, 17, mppe_key(RECV_KEY, req_auth, b"\x80\x01"))
+                + vsa(311, 16, mppe_key(SEND_KEY, req_auth, b"\x80\x02"))
+                + attr(ATTR_EAP_MESSAGE, eap(EAP_SUCCESS, eap_id))
+            )
+            reply = build_reply(ACCESS_ACCEPT, ident, req_auth, echo + body, True)
+            print(
+                f"peer={peer[0]} round=2 user={user} state_ok=True eap_type={eap_type} "
+                f"request_ma={ma} -> accept",
+                flush=True,
+            )
+        else:
+            reply = build_reply(ACCESS_REJECT, ident, req_auth, echo, True)
+            print(f"peer={peer[0]} user={user} state={state.hex()} unknown -> reject", flush=True)
+        sock.sendto(reply, peer)
+
+
+if __name__ == "__main__":
+    main()

tests/radius/run.sh

@@ -0,0 +1,436 @@
+#!/usr/bin/env bash
+# Functional test of the FreeRADIUS config in kubernetes/apps/authentik/.
+# See README.md. Needs: docker, openssl, yq (the jq wrapper, kislyuk/yq).
+set -euo pipefail
+
+here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+repo="$(cd "$here/../.." && pwd)"
+app="$repo/kubernetes/apps/authentik"
+deploy="$app/freeradius.yaml"
+config="$app/freeradius-config.yaml"
+
+net=radtest
+net_udm=radtest-udm
+# test client ranges from clients.conf
+subnet=10.2.50.0/24
+subnet6=fd02:50::/64
+ip_acct=10.2.50.249
+ip_nas=10.2.50.250
+ip_radius=10.2.50.251
+ip_mock=10.2.50.252
+ip6_acct=fd02:50::249
+ip6_nas=fd02:50::250
+ip6_radius=fd02:50::251
+outpost_fqdn=ak-outpost-8021x-radius.authentik.svc.cluster.local
+mock_image=python:3.13-alpine
+eapol_image=radtest-eapol:local
+password=dummy-correct-password
+
+work="$(mktemp -d)"
+fails=0
+
+cleanup() {
+  local ids=()
+  mapfile -t ids < <(docker ps -aq --filter name='^radtest-')
+  if ((${#ids[@]} > 0)); then docker rm -f "${ids[@]}" >/dev/null; fi
+  local n
+  for n in "$net" "$net_udm"; do
+    if [[ -n "$(docker network ls -q --filter name="^${n}\$")" ]]; then docker network rm "$n" >/dev/null; fi
+  done
+  local vols=()
+  mapfile -t vols < <(docker volume ls -q --filter name='^radtest-')
+  if ((${#vols[@]} > 0)); then docker volume rm "${vols[@]}" >/dev/null; fi
+  rm -rf "$work"
+}
+trap cleanup EXIT
+
+pass() { printf 'PASS  %s\n' "$1"; }
+fail() { printf 'FAIL  %s\n' "$1"; fails=$((fails + 1)); }
+
+deployment() { yq -r 'select(.kind == "Deployment")' "$deploy"; }
+
+# --- render the production ConfigMap through the Deployment's projected volume
+render() {
+  local raddb="$work/raddb" key path
+  mkdir -p "$raddb"
+  while read -r key path; do
+    mkdir -p "$raddb/$(dirname "$path")"
+    yq -r --arg k "$key" 'select(.kind == "ConfigMap") | .data[$k]' "$config" >"$raddb/$path"
+  done < <(deployment | yq -r '.spec.template.spec.volumes[] | select(.projected) | .projected.sources[]
+      | select(.configMap) | .configMap.items[] | "\(.key) \(.path)"')
+
+  # self-signed CA + server cert in place of the cert-manager Secret
+  local crt key_path
+  crt="$(deployment | yq -r '.spec.template.spec.volumes[] | select(.projected) | .projected.sources[]
+      | select(.secret) | .secret.items[] | select(.key == "tls.crt") | .path')"
+  key_path="$(deployment | yq -r '.spec.template.spec.volumes[] | select(.projected) | .projected.sources[]
+      | select(.secret) | .secret.items[] | select(.key == "tls.key") | .path')"
+  mkdir -p "$raddb/$(dirname "$crt")" "$work/pki" "$work/eapol"
+  openssl req -x509 -newkey rsa:2048 -nodes -days 1 -subj "/CN=radtest CA" \
+    -keyout "$work/pki/ca.key" -out "$work/eapol/ca.pem" >"$work/pki/openssl.log" 2>&1
+  openssl req -newkey rsa:2048 -nodes -subj "/CN=radius.renner.uno" \
+    -keyout "$raddb/$key_path" -out "$work/pki/server.csr" >>"$work/pki/openssl.log" 2>&1
+  printf 'subjectAltName=DNS:radius.renner.uno\nextendedKeyUsage=serverAuth\n' >"$work/pki/ext"
+  openssl x509 -req -in "$work/pki/server.csr" -CA "$work/eapol/ca.pem" -CAkey "$work/pki/ca.key" \
+    -CAcreateserial -days 1 -extfile "$work/pki/ext" -out "$raddb/$crt" >>"$work/pki/openssl.log" 2>&1
+  chmod -R a+rX "$work"
+  # kubelet creates the projected volume root world-writable
+  chmod 1777 "$raddb"
+}
+
+# Volume mounts of a pod container as docker -v options, as the pod declares
+# them: the projected volume is the rendered config, other emptyDirs (except
+# the /tmp tmpfs) are named docker volumes.
+mount_opts() { # container name; sets mounts[]
+  local vol name path ro ro_suffix
+  vol="$(deployment | yq -r '.spec.template.spec.volumes[] | select(.projected) | .name')"
+  mounts=()
+  while read -r name path ro; do
+    ro_suffix=""
+    if [[ "$ro" == true ]]; then ro_suffix=":ro"; fi
+    if [[ "$name" == "$vol" ]]; then
+      mounts+=(-v "$work/raddb:$path${ro_suffix}")
+    elif [[ "$name" != tmp ]]; then
+      mounts+=(-v "radtest-$name:$path${ro_suffix}")
+    fi
+  done < <(deployment | yq -r --arg n "$1" '(.spec.template.spec.containers + (.spec.template.spec.initContainers // []))[]
+      | select(.name == $n) | .volumeMounts[] | "\(.name) \(.mountPath) \(.readOnly // false)"')
+}
+
+# emptyDir volumes other than /tmp, writable by the pod user like kubelet's
+create_volumes() {
+  local name
+  while read -r name; do
+    docker volume create "radtest-$name" >/dev/null
+    docker run --rm --user 0:0 -v "radtest-$name:/v" "$mock_image" chmod 0777 /v >/dev/null
+  done < <(deployment | yq -r '.spec.template.spec.volumes[] | select(.emptyDir) | select(.name != "tmp") | .name')
+}
+
+# Pod restrictions: non-root, read-only root, no capabilities.
+pod_opts=(--user 65534:65534 --read-only --tmpfs /tmp:rw,size=16m --cap-drop ALL --security-opt no-new-privileges)
+
+# Run the Deployment's initContainers exactly as defined.
+run_init() {
+  local names=() n image cmd=() args=()
+  mapfile -t names < <(deployment | yq -r '.spec.template.spec.initContainers // [] | .[].name')
+  for n in "${names[@]}"; do
+    image="$(deployment | yq -r --arg n "$n" '.spec.template.spec.initContainers[] | select(.name == $n) | .image')"
+    mapfile -t cmd < <(deployment | yq -r --arg n "$n" '.spec.template.spec.initContainers[] | select(.name == $n) | .command[]')
+    mapfile -t args < <(deployment | yq -r --arg n "$n" '.spec.template.spec.initContainers[] | select(.name == $n) | .args // [] | .[]')
+    mount_opts "$n"
+    if docker run --rm --name "radtest-init-$n" --network "$net" "${pod_opts[@]}" "${mounts[@]}" \
+      --entrypoint "${cmd[0]}" "$image" "${cmd[@]:1}" "${args[@]}" >"$work/init-$n.log" 2>&1; then
+      pass "initContainer $n"
+    else
+      cat "$work/init-$n.log"
+      fail "initContainer $n"
+      exit 1
+    fi
+  done
+}
+
+# --- dummy secrets for every secretKeyRef env var of the Deployment
+secret_env=()
+load_env() {
+  local name
+  while read -r name; do
+    secret_env+=(-e "$name=dummy-${name,,}")
+  done < <(deployment | yq -r '.spec.template.spec.containers[] | select(.name == "freeradius")
+      | .env[] | select(.valueFrom.secretKeyRef) | .name')
+}
+
+start() {
+  local image args=()
+  image="$(deployment | yq -r '.spec.template.spec.containers[] | select(.name == "freeradius") | .image')"
+  mapfile -t args < <(deployment | yq -r '.spec.template.spec.containers[] | select(.name == "freeradius") | .args[]')
+  if [[ "${RADTEST_DEBUG:-0}" == 1 ]]; then args+=(-xx); fi
+  radius_image="$image"
+
+  # Internal bridge without a host address: both test ranges are also the
+  # workstation LAN, so the host must get no address or route on them.
+  docker network create --internal --subnet "$subnet" --ipv6 --subnet "$subnet6" \
+    -o com.docker.network.bridge.inhibit_ipv4=true \
+    -o com.docker.network.bridge.gateway_mode_ipv6=isolated "$net" >/dev/null
+  # UDM home server address from proxy.conf; its /24 is a second internal
+  # bridge (gateway address moved off the UDM's).
+  ip_udm="$(awk '$1 == "home_server" && $2 == "udm" {f=1} f && $1 == "ipaddr" {print $3; exit}' "$work/raddb/proxy.conf")"
+  docker network create --internal --subnet "${ip_udm%.*}.0/24" --gateway "${ip_udm%.*}.254" \
+    -o com.docker.network.bridge.inhibit_ipv4=true "$net_udm" >/dev/null
+  local bridge n
+  for n in "$net" "$net_udm"; do
+    bridge="br-$(docker network inspect -f '{{printf "%.12s" .Id}}' "$n")"
+    if [[ -n "$(ip -4 -o addr show dev "$bridge")" ]] \
+      || [[ -n "$(ip -6 -o addr show dev "$bridge" scope global)" ]] \
+      || [[ -n "$(ip -6 route show dev "$bridge" "$subnet6")" ]]; then
+      echo "bridge $bridge got a host address or route in a test range; aborting" >&2
+      exit 1
+    fi
+  done
+
+  docker run -d --name radtest-udm --network "$net_udm" --ip "$ip_udm" \
+    -e MOCK_SECRET=dummy-udm_radius_secret \
+    -v "$here/mock_outpost.py:/mock/mock_outpost.py:ro" -v "$here/mock_udm.py:/mock/mock_udm.py:ro" \
+    "$mock_image" python3 -u /mock/mock_udm.py >/dev/null
+
+  docker run -d --name radtest-mock --network "$net" --ip "$ip_mock" \
+    --network-alias "$outpost_fqdn" \
+    -e MOCK_SECRET=dummy-dot1x_outpost_secret -e MOCK_PASSWORD="$password" \
+    -v "$here/mock_outpost.py:/mock_outpost.py:ro" \
+    "$mock_image" python3 -u /mock_outpost.py >/dev/null
+
+  create_volumes
+  run_init
+
+  # Same restrictions as the pod.
+  mount_opts freeradius
+  local run_opts=("${pod_opts[@]}" "${secret_env[@]}" "${mounts[@]}")
+  local confdir="" i
+  for i in "${!args[@]}"; do
+    if [[ "${args[$i]}" == -d ]]; then confdir="${args[$((i + 1))]}"; fi
+  done
+
+  echo "--- radiusd -XC (config check)"
+  if docker run --rm --network "$net" "${run_opts[@]}" "$image" radiusd -XC -d "$confdir" >"$work/configcheck.log" 2>&1 \
+    && grep -q "Configuration appears to be OK" "$work/configcheck.log"; then
+    pass "radiusd -XC: Configuration appears to be OK"
+  else
+    cat "$work/configcheck.log"
+    fail "radiusd -XC"
+    exit 1
+  fi
+
+  # Interface names as in the pod: eth0 the NAS side (the listeners bind to
+  # it), net1 the UDM side. Docker attaches networks in no fixed order.
+  docker create --name radtest-freeradius "${run_opts[@]}" \
+    --network "name=$net,ip=$ip_radius,ip6=$ip6_radius,driver-opt=com.docker.network.endpoint.ifname=eth0" \
+    "$image" "${args[@]}" >/dev/null
+  docker network connect --driver-opt com.docker.network.endpoint.ifname=net1 "$net_udm" radtest-freeradius
+  docker start radtest-freeradius >/dev/null
+  sleep 2
+  if [[ "$(docker inspect -f '{{.State.Running}}' radtest-freeradius)" != true ]]; then
+    docker logs radtest-freeradius
+    fail "freeradius container running"
+    exit 1
+  fi
+  pass "freeradius container running with production args: ${args[*]}"
+
+  local probe=()
+  mapfile -t probe < <(deployment | yq -r '.spec.template.spec.containers[] | select(.name == "freeradius")
+      | .readinessProbe.exec.command[]')
+  if docker exec radtest-freeradius "${probe[@]}" >"$work/probe.out" 2>&1; then
+    pass "readiness probe command succeeds"
+  else
+    cat "$work/probe.out"
+    fail "readiness probe command succeeds"
+  fi
+}
+
+eapol_conf() { # case user password [outer-identity]
+  cat >"$work/eapol/$1.conf" <<EOF
+network={
+  key_mgmt=WPA-EAP
+  eap=TTLS
+  identity="$2"
+  anonymous_identity="${4:-anonymous}"
+  password="$3"
+  phase2="auth=PAP"
+  ca_cert="/eapol/ca.pem"
+  domain_suffix_match="radius.renner.uno"
+}
+EOF
+}
+
+eapol() { # name timeout server
+  docker run --rm --network "$net" --ip "$ip_nas" --ip6 "$ip6_nas" -v "$work/eapol:/eapol:ro" "$eapol_image" \
+    eapol_test -c "/eapol/$1.conf" -a "$3" -s "dummy-dot1x_test_secret" -t "$2" \
+    >"$work/$1.out" 2>&1 || true
+}
+
+# Attribute lines of the Access-Accept as the NAS received it.
+accept_attrs() {
+  awk '/RADIUS message: code=2 /{f=1; next} f && /^   /{print; next} f{f=0}' "$work/$1.out"
+}
+
+attr_value() { # case attr-number
+  accept_attrs "$1" | awk -v a="Attribute $2 " 'index($0, a){getline; sub(/^ *Value: /, ""); print; exit}'
+}
+
+check_accept() { # case user server [outer-identity]
+  local c="$1"
+  eapol_conf "$c" "$2" "$password" "${4:-}"
+  eapol "$c" 5 "$3"
+  if [[ "$(tail -n 1 "$work/$c.out")" == SUCCESS ]]; then pass "$c: SUCCESS"; else fail "$c: SUCCESS"; fi
+  [[ "$(attr_value "$c" 81)" =~ ^(00)?3530$ ]] && pass "$c: Tunnel-Private-Group-Id 50" \
+    || fail "$c: Tunnel-Private-Group-Id 50 (got '$(attr_value "$c" 81)')"
+  [[ "$(attr_value "$c" 64)" == 0000000d ]] && pass "$c: Tunnel-Type VLAN" \
+    || fail "$c: Tunnel-Type VLAN (got '$(attr_value "$c" 64)')"
+  [[ "$(attr_value "$c" 65)" == 00000006 ]] && pass "$c: Tunnel-Medium-Type IEEE-802" \
+    || fail "$c: Tunnel-Medium-Type IEEE-802 (got '$(attr_value "$c" 65)')"
+  # Cisco-AV-Pair = VSA vendor 9; "dot1x-vlan" in hex
+  if accept_attrs "$c" | grep -Eq 'Value: 00000009|646f7431782d766c616e'; then
+    fail "$c: no Cisco-AV-Pair to the NAS"
+  else
+    pass "$c: no Cisco-AV-Pair to the NAS"
+  fi
+}
+
+check_reject() { # case user password timeout server [outer-identity]
+  local c="$1"
+  eapol_conf "$c" "$2" "$3" "${6:-}"
+  eapol "$c" "$4" "$5"
+  if [[ "$(tail -n 1 "$work/$c.out")" == FAILURE ]] && grep -q "RADIUS message: code=3 (Access-Reject)" "$work/$c.out" \
+    && ! grep -q "EAPOL test timed out" "$work/$c.out"; then
+    pass "$c: FAILURE via Access-Reject within ${4}s"
+  else
+    fail "$c: FAILURE via Access-Reject within ${4}s"
+  fi
+}
+
+udm_log() { docker logs radtest-udm 2>&1; }
+
+# Non-anonymous outer identity: the whole EAP conversation goes to the mock
+# UDM, its Access-Accept reaches the NAS unchanged.
+check_udm_accept() { # case user server
+  local c="$1" u="$2"
+  eapol_conf "$c" "$u" "$password" "$u"
+  eapol "$c" 3 "$3"
+  udm_log | grep -q "round=1 user=$u eap_identity_response=True eap_identity=$u request_ma=True -> challenge" \
+    && pass "$c: EAP-Response/Identity forwarded to the UDM" || fail "$c: EAP-Response/Identity forwarded to the UDM"
+  udm_log | grep -q "round=2 user=$u state_ok=True eap_type=21 request_ma=True -> accept" \
+    && pass "$c: second round forwarded with the UDM's State" || fail "$c: second round forwarded with the UDM's State"
+  grep -q "RADIUS message: code=2 (Access-Accept)" "$work/$c.out" \
+    && pass "$c: UDM Access-Accept reaches the NAS" || fail "$c: UDM Access-Accept reaches the NAS"
+  [[ "$(attr_value "$c" 81)" =~ ^(00)?323030$ ]] && pass "$c: Tunnel-Private-Group-Id 200" \
+    || fail "$c: Tunnel-Private-Group-Id 200 (got '$(attr_value "$c" 81)')"
+  [[ "$(attr_value "$c" 64)" == 0000000d ]] && pass "$c: Tunnel-Type VLAN" \
+    || fail "$c: Tunnel-Type VLAN (got '$(attr_value "$c" 64)')"
+  [[ "$(attr_value "$c" 65)" == 00000006 ]] && pass "$c: Tunnel-Medium-Type IEEE-802" \
+    || fail "$c: Tunnel-Medium-Type IEEE-802 (got '$(attr_value "$c" 65)')"
+  local k
+  for k in "Recv-Key (crypt)|11" "Send-Key (sign)|22"; do
+    grep -qF "MS-MPPE-${k%|*} - hexdump(len=32): $(printf "${k#*|} %.0s" {1..31})${k#*|}" "$work/$c.out" \
+      && pass "$c: MS-MPPE-${k%% *} unchanged" || fail "$c: MS-MPPE-${k%% *} unchanged"
+  done
+}
+
+check_udm_reject() { # case user server
+  local c="$1" u="$2"
+  check_reject "$c" "$u" "$password" 1 "$3" "$u"
+  udm_log | grep -q "round=1 user=$u eap_identity_response=True eap_identity=$u request_ma=True -> reject" \
+    && pass "$c: decided by the UDM" || fail "$c: decided by the UDM"
+}
+
+check_accounting() { # case server
+  printf 'Acct-Status-Type = Start\nUser-Name = "acct-test"\nAcct-Session-Id = "%s"\n' \
+    "$1" >"$work/eapol/$1.txt"
+  docker run --rm --network "$net" --ip "$ip_acct" --ip6 "$ip6_acct" -v "$work/eapol:/eapol:ro" "$radius_image" \
+    radclient -x -r 1 -t 2 -f "/eapol/$1.txt" "$2:1813" acct dummy-dot1x_test_secret \
+    >"$work/$1.out" 2>&1 || true
+  if grep -q "Received Accounting-Response" "$work/$1.out"; then
+    pass "$1: accounting answered locally"
+  else
+    fail "$1: accounting answered locally"
+  fi
+}
+
+# Outpost stalls until FreeRADIUS marks it dead, then comes back: a login must
+# succeed again within the bound.
+check_recovery() { # bound-seconds
+  local bound="$1" start now elapsed n=0
+  eapol_conf recovery vlan-avpair "$password"
+  docker pause radtest-mock >/dev/null
+  start=$SECONDS
+  # Requests during the stall: timeouts mark the home server zombie, then
+  # dead. Unpause right after the dead marking (worst case for recovery).
+  until docker logs radtest-freeradius 2>&1 | grep -q "port 1812 as dead"; do
+    if ((SECONDS - start > 90)); then
+      docker unpause radtest-mock >/dev/null
+      fail "recovery: home server marked dead during the stall"
+      return
+    fi
+    eapol recovery 4 "$ip_radius"
+  done
+  echo "recovery: home server marked dead $((SECONDS - start))s into the stall"
+  docker unpause radtest-mock >/dev/null
+  start=$SECONDS
+  while :; do
+    n=$((n + 1))
+    eapol recovery 5 "$ip_radius"
+    if [[ "$(tail -n 1 "$work/recovery.out")" == SUCCESS ]]; then break; fi
+    now=$SECONDS
+    if ((now - start > 120)); then break; fi
+    sleep 1
+  done
+  elapsed=$((SECONDS - start))
+  echo "recovery: first SUCCESS ${elapsed}s after unpause (attempt $n)"
+  if [[ "$(tail -n 1 "$work/recovery.out")" == SUCCESS ]] && ((elapsed <= bound)); then
+    pass "recovery: login succeeds within ${bound}s after the outpost returns (${elapsed}s)"
+  else
+    fail "recovery: login succeeds within ${bound}s after the outpost returns (${elapsed}s)"
+    local probe=()
+    mapfile -t probe < <(deployment | yq -r '.spec.template.spec.containers[] | select(.name == "freeradius")
+        | .livenessProbe.exec.command[]')
+    if docker exec radtest-freeradius "${probe[@]}" >"$work/recovery-probe.out" 2>&1; then
+      echo "recovery: liveness probe still succeeds"
+    else
+      echo "recovery: liveness probe fails"
+    fi
+  fi
+}
+
+main() {
+  for f in "$deploy" "$config"; do
+    [[ -f "$f" ]] || { echo "missing $f" >&2; exit 1; }
+  done
+  docker build -q -t "$eapol_image" -f "$here/eapol.Dockerfile" "$here" >/dev/null
+  render
+  load_env
+  start
+
+  check_accept vlan-tunnel vlan-tunnel "$ip_radius"
+  check_accept vlan-avpair vlan-avpair "$ip_radius"
+  check_reject novlan novlan "$password" 5 "$ip_radius"
+  check_reject bad-password vlan-tunnel wrong-password 1 "$ip_radius"
+  check_reject unknown-user bad "$password" 1 "$ip_radius"
+  check_accounting acct "$ip_radius"
+
+  # Outer identity routing: anonymous[@realm] (any case) -> local TTLS,
+  # anything else -> UDM.
+  check_accept anon-realm vlan-tunnel "$ip_radius" "Anonymous@Example.Org"
+  check_udm_accept udm-accept endpoint-accept "$ip_radius"
+  check_udm_reject udm-reject endpoint-reject "$ip_radius"
+  check_udm_accept v6-udm-accept v6-endpoint-accept "$ip6_radius"
+
+  # IPv6 listeners and clients
+  check_accept v6-vlan-avpair vlan-avpair "$ip6_radius"
+  check_reject v6-novlan novlan "$password" 5 "$ip6_radius"
+  check_reject v6-bad-password vlan-tunnel wrong-password 1 "$ip6_radius"
+  check_accounting v6-acct "[$ip6_radius]"
+
+  # dead -> alive needs num_answers_to_alive (3) status checks, check_interval 6s
+  check_recovery 20
+
+  if grep -q "code=4" < <(docker logs radtest-mock 2>&1); then
+    fail "no accounting forwarded to the outpost"
+  else
+    pass "no accounting forwarded to the outpost"
+  fi
+
+  if udm_log | grep -Eiq "eap_identity=anonymous|user=(vlan-|novlan|bad|anonymous)|code=4"; then
+    fail "anonymous logins and accounting never reach the UDM"
+  else
+    pass "anonymous logins and accounting never reach the UDM"
+  fi
+
+  if ((fails > 0)) || [[ "${RADTEST_DEBUG:-0}" == 1 ]]; then
+    echo "--- freeradius log"; docker logs radtest-freeradius 2>&1
+    echo "--- mock outpost log"; docker logs radtest-mock 2>&1
+    echo "--- mock udm log"; udm_log
+    for o in "$work"/*.out; do echo "--- $(basename "$o")"; cat "$o"; done
+  fi
+  echo
+  if ((fails > 0)); then echo "$fails check(s) failed"; exit 1; fi
+  echo "all checks passed"
+}
+
+main "$@"

wlan-setup/Containerfile

@@ -0,0 +1,23 @@
+# wlan-setup — static Go binary in a FROM-scratch image.
+#
+# Nothing in the final image but the binary and the CA bundle (the binary has no shell and no
+# package manager to patch or to exec).
+FROM golang:1.27.3-bookworm@sha256:d9b6a1beb9474adc2a1ce842573639b44b2a0dd49b6669f51d3821baf9ec37c9 AS build
+
+WORKDIR /build
+COPY go.mod go.sum ./
+RUN go mod download
+COPY *.go index.html ./
+
+RUN go vet ./... \
+ && CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /wlan-setup .
+
+FROM scratch
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=build /wlan-setup /wlan-setup
+
+# Matches runAsUser in the Deployment. There is no /etc/passwd in a scratch image, so this is a
+# bare uid by necessity.
+USER 65534:65534
+EXPOSE 8080
+ENTRYPOINT ["/wlan-setup"]

wlan-setup/authentik.go

@@ -0,0 +1,169 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strings"
+)
+
+// authentikHost is the Host header of every call: authentik routes by it.
+const authentikHost = "auth.renner.uno"
+
+// maxReply bounds what is read of an authentik reply.
+const maxReply = 1 << 20
+
+var credential = regexp.MustCompile(`^[A-Za-z0-9._~+/=-]+$`)
+
+// Authentik calls authentik's OAuth and API endpoints at its internal address.
+type Authentik struct {
+	base   string
+	secret string
+	http   *http.Client
+}
+
+// call sends one request and decodes the JSON reply into out. Errors name the method, path and
+// status, never the credential or the request body.
+func (a *Authentik) call(ctx context.Context, method, path, auth, contentType string, body []byte, out any) error {
+	var rd io.Reader
+	if body != nil {
+		rd = bytes.NewReader(body)
+	}
+	req, err := http.NewRequestWithContext(ctx, method, a.base+path, rd)
+	if err != nil {
+		return fmt.Errorf("%s %s: %w", method, path, err)
+	}
+	req.Host = authentikHost
+	req.Header.Set("Authorization", auth)
+	req.Header.Set("Accept", "application/json")
+	if contentType != "" {
+		req.Header.Set("Content-Type", contentType)
+	}
+	resp, err := a.http.Do(req)
+	if err != nil {
+		return fmt.Errorf("%s %s: %w", method, path, err)
+	}
+	defer resp.Body.Close()
+	data, err := io.ReadAll(io.LimitReader(resp.Body, maxReply+1))
+	if err != nil {
+		return fmt.Errorf("%s %s: reading the reply: %w", method, path, err)
+	}
+	if len(data) > maxReply {
+		return fmt.Errorf("%s %s -> %d: reply larger than %d bytes", method, path, resp.StatusCode, maxReply)
+	}
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		return fmt.Errorf("%s %s -> %d %s", method, path, resp.StatusCode, snippet(data))
+	}
+	if err := json.Unmarshal(data, out); err != nil {
+		return fmt.Errorf("%s %s: decoding the reply: %w", method, path, err)
+	}
+	return nil
+}
+
+func snippet(b []byte) string {
+	s := strings.ToValidUTF8(string(b), "?")
+	if len(s) > 300 {
+		s = s[:300]
+	}
+	return s
+}
+
+func bearer(token string) (string, error) {
+	if !credential.MatchString(token) {
+		return "", fmt.Errorf("no access token")
+	}
+	return "Bearer " + token, nil
+}
+
+// Exchange trades the authorization code for an access token.
+func (a *Authentik) Exchange(ctx context.Context, code, redirectURI string) (string, error) {
+	basic := "Basic " + base64.StdEncoding.EncodeToString([]byte(clientID+":"+a.secret))
+	body := form("grant_type", "authorization_code", "code", code, "redirect_uri", redirectURI)
+	var grant struct {
+		AccessToken string `json:"access_token"`
+	}
+	if err := a.call(ctx, http.MethodPost, "/application/o/token/", basic, "application/x-www-form-urlencoded",
+		[]byte(body), &grant); err != nil {
+		return "", err
+	}
+	if !credential.MatchString(grant.AccessToken) {
+		return "", fmt.Errorf("POST /application/o/token/: no access token in the reply")
+	}
+	return grant.AccessToken, nil
+}
+
+// Username returns the username of the access token's user.
+func (a *Authentik) Username(ctx context.Context, token string) (string, error) {
+	auth, err := bearer(token)
+	if err != nil {
+		return "", err
+	}
+	var me struct {
+		User struct {
+			Username string `json:"username"`
+		} `json:"user"`
+	}
+	if err := a.call(ctx, http.MethodGet, "/api/v3/core/users/me/", auth, "", nil, &me); err != nil {
+		return "", err
+	}
+	return me.User.Username, nil
+}
+
+type tokenRequest struct {
+	Identifier  string `json:"identifier"`
+	Intent      string `json:"intent"`
+	Description string `json:"description"`
+	Expiring    bool   `json:"expiring"`
+	Expires     string `json:"expires"`
+}
+
+// AppPassword creates an app password as the token's user and returns its key.
+func (a *Authentik) AppPassword(ctx context.Context, token string, t tokenRequest) (string, error) {
+	auth, err := bearer(token)
+	if err != nil {
+		return "", err
+	}
+	body, err := json.Marshal(t)
+	if err != nil {
+		return "", err
+	}
+	var created json.RawMessage
+	if err := a.call(ctx, http.MethodPost, "/api/v3/core/tokens/", auth, "application/json", body, &created); err != nil {
+		return "", err
+	}
+	var view struct {
+		Key string `json:"key"`
+	}
+	path := "/api/v3/core/tokens/" + url.PathEscape(t.Identifier) + "/view_key/"
+	if err := a.call(ctx, http.MethodGet, path, auth, "", nil, &view); err != nil {
+		return "", err
+	}
+	if view.Key == "" {
+		return "", fmt.Errorf("GET %s: no key in the reply", path)
+	}
+	return view.Key, nil
+}
+
+// form encodes key/value pairs in the given order, like encodeURIComponent.
+func form(pairs ...string) string {
+	var b strings.Builder
+	for i := 0; i+1 < len(pairs); i += 2 {
+		if i > 0 {
+			b.WriteByte('&')
+		}
+		b.WriteString(escape(pairs[i]))
+		b.WriteByte('=')
+		b.WriteString(escape(pairs[i+1]))
+	}
+	return b.String()
+}
+
+func escape(s string) string {
+	return strings.ReplaceAll(url.QueryEscape(s), "+", "%20")
+}

wlan-setup/config.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"errors"
+	"net/url"
+	"strings"
+)
+
+// Config is the service configuration, read from the environment.
+type Config struct {
+	ClientSecret string
+	// AuthentikURL is where the calls go; they carry Host auth.renner.uno.
+	AuthentikURL string
+	AuthorizeURL string
+	PublicURL    string
+	SigningKey   string
+	SigningCert  string
+	Listen       string
+}
+
+func loadConfig(getenv func(string) string) (Config, error) {
+	get := func(key, def string) string {
+		if v := strings.TrimSpace(getenv(key)); v != "" {
+			return v
+		}
+		return def
+	}
+	c := Config{
+		ClientSecret: strings.TrimSpace(getenv("WLAN_SETUP_CLIENT_SECRET")),
+		AuthentikURL: strings.TrimRight(get("AUTHENTIK_INTERNAL_URL", "http://authentik-server.authentik.svc.cluster.local"), "/"),
+		AuthorizeURL: get("AUTHENTIK_AUTHORIZE_URL", "https://auth.renner.uno/application/o/authorize/"),
+		PublicURL:    strings.TrimRight(get("PUBLIC_URL", "https://wlan.renner.uno"), "/"),
+		SigningKey:   get("SIGNING_KEY", "/etc/wlan-signing/tls.key"),
+		SigningCert:  get("SIGNING_CERT", "/etc/wlan-signing/tls.crt"),
+		Listen:       get("LISTEN", ":8080"),
+	}
+	var errs []error
+	if c.ClientSecret == "" {
+		errs = append(errs, errors.New("WLAN_SETUP_CLIENT_SECRET is not set"))
+	}
+	for key, v := range map[string]string{
+		"AUTHENTIK_INTERNAL_URL":  c.AuthentikURL,
+		"AUTHENTIK_AUTHORIZE_URL": c.AuthorizeURL,
+		"PUBLIC_URL":              c.PublicURL,
+	} {
+		if u, err := url.Parse(v); err != nil || (u.Scheme != "http" && u.Scheme != "https") || u.Host == "" {
+			errs = append(errs, errors.New(key+" must be an absolute http(s) URL"))
+		}
+	}
+	return c, errors.Join(errs...)
+}

wlan-setup/go.mod

@@ -0,0 +1,10 @@
+module gitea.renner.uno/konairius/homelab/wlan-setup
+
+go 1.27
+
+require (
+	github.com/beevik/etree v1.7.0
+	github.com/russellhaering/goxmldsig v1.6.1
+)
+
+require github.com/jonboulle/clockwork v0.5.0 // indirect

wlan-setup/go.sum

@@ -0,0 +1,14 @@
+github.com/beevik/etree v1.7.0 h1:xjBk9O4p4x7D1YajePjfLzdaFC4/uYUENA7P0pv6gXA=
+github.com/beevik/etree v1.7.0/go.mod h1:bh4zJxiIr62SOf9pRzN7UUYaEDa9HEKafK25+sLc0Gc=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/jonboulle/clockwork v0.5.0 h1:Hyh9A8u51kptdkR+cqRpT1EebBwTn1oK9YfGYbdFz6I=
+github.com/jonboulle/clockwork v0.5.0/go.mod h1:3mZlmanh0g2NDKO5TWZVJAfofYk64M7XN3SzBPjZF60=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russellhaering/goxmldsig v1.6.1 h1:SB7R5ttvrGIDB2juJAK/i7DQ2Ivr7agG+ohfNJjwyYU=
+github.com/russellhaering/goxmldsig v1.6.1/go.mod h1:haZkRcLs9W/Xp989fIjP3BrTdbFQveRF0QNZSYoH09w=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

wlan-setup/index.html

@@ -0,0 +1,123 @@
+<!doctype html>
+<html lang="de">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>WLAN einrichten</title>
+<style>
+  :root { --bg: #ffffff; --fg: #1d1d1f; --muted: #5f6368; --card: #f4f5f7; --accent: #0b63ce; --code: #e9ebef; }
+  @media (prefers-color-scheme: dark) {
+    :root { --bg: #121314; --fg: #e8eaed; --muted: #9aa0a6; --card: #1e1f22; --accent: #7cacf8; --code: #2a2b2f; }
+  }
+  * { box-sizing: border-box; }
+  body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
+  main { max-width: 42rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
+  h1 { font-size: 1.6rem; margin: 0 0 .25rem; }
+  h2 { font-size: 1.15rem; margin: 0 0 .5rem; }
+  p { margin: .5rem 0; }
+  .muted { color: var(--muted); }
+  section { background: var(--card); border-radius: 12px; padding: 1rem 1.1rem; margin: 1rem 0; }
+  section.current { outline: 2px solid var(--accent); }
+  a.button, button { display: inline-block; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: .6rem 1rem; font: inherit; text-decoration: none; cursor: pointer; }
+  @media (prefers-color-scheme: dark) { a.button, button { color: #121314; } }
+  ol { padding-left: 1.3rem; margin: .5rem 0; }
+  pre { background: var(--code); border-radius: 8px; padding: .75rem; overflow-x: auto; white-space: pre-wrap; word-break: break-all; font-size: .85rem; margin: .5rem 0; }
+  details > summary { cursor: pointer; color: var(--accent); margin: 1.5rem 0 .5rem; }
+</style>
+</head>
+<body>
+<main>
+  <h1>WLAN einrichten</h1>
+  <p>WLAN <strong>Renner UniFi</strong> für dein Konto <strong id="user">…</strong>. Android, iPhone, iPad, Mac und Windows bekommen ein eigenes WLAN-App-Passwort; Linux meldet sich mit deinem authentik-Passwort an.</p>
+
+  <div id="detected"></div>
+
+  <details id="others">
+    <summary>Andere Geräte</summary>
+    <div id="rest"></div>
+  </details>
+
+  <template id="t-android">
+    <section data-os="android">
+      <h2>Android</h2>
+      <p><a class="button" href="/android/install">Auf Android installieren</a></p>
+      <p class="muted">Das Gerät bekommt ein eigenes WLAN-App-Passwort in deinem authentik-Konto; dort gelöscht, ist das Gerät aus dem WLAN.</p>
+    </section>
+  </template>
+
+  <template id="t-apple">
+    <section data-os="apple">
+      <h2>iPhone, iPad, Mac</h2>
+      <p><a class="button" href="/apple/install">Profil laden</a></p>
+      <ol>
+        <li>iPhone/iPad: Einstellungen → „Profil geladen“ → Installieren. Mac: Systemeinstellungen → Allgemein → Geräteverwaltung → Profil doppelklicken.</li>
+        <li>Das Gerät verbindet sich danach selbst mit „Renner UniFi“.</li>
+      </ol>
+      <p class="muted">Das Gerät bekommt ein eigenes WLAN-App-Passwort in deinem authentik-Konto; dort gelöscht, ist das Gerät aus dem WLAN.</p>
+    </section>
+  </template>
+
+  <template id="t-windows">
+    <section data-os="windows">
+      <h2>Windows</h2>
+      <p><a class="button" href="/windows/install">Auf Windows installieren</a></p>
+      <p>Windows öffnet die Einstellungen und fragt, ob das WLAN-Profil hinzugefügt werden soll: „Hinzufügen“ wählen.</p>
+      <p class="muted">Das Gerät bekommt ein eigenes WLAN-App-Passwort in deinem authentik-Konto; dort gelöscht, ist das Gerät aus dem WLAN.</p>
+    </section>
+  </template>
+
+  <template id="t-linux">
+    <section data-os="linux">
+      <h2>Linux (NetworkManager)</h2>
+      <p>Im Terminal ausführen, danach fragt NetworkManager nach dem Passwort:</p>
+      <pre id="nmcli"></pre>
+      <p><button type="button" id="copy-nmcli">Befehl kopieren</button></p>
+    </section>
+  </template>
+</main>
+<script>
+(function () {
+  var ua = navigator.userAgent;
+  var os = "other";
+  if (/Android/i.test(ua)) os = "android";
+  else if (/iPhone|iPad|iPod|Macintosh/i.test(ua)) os = "apple";
+  else if (/Windows/i.test(ua)) os = "windows";
+  else if (/Linux|X11/i.test(ua)) os = "linux";
+
+  var detected = document.getElementById("detected");
+  var rest = document.getElementById("rest");
+  ["android", "apple", "windows", "linux"].forEach(function (name) {
+    var node = document.getElementById("t-" + name).content.cloneNode(true);
+    if (name === os) { node.querySelector("section").classList.add("current"); detected.appendChild(node); }
+    else rest.appendChild(node);
+  });
+  if (os === "other") document.getElementById("others").open = true;
+
+  function quote(s) { return "'" + s.replace(/'/g, "'\\''") + "'"; }
+  function render(user) {
+    document.getElementById("user").textContent = user || "(dein Benutzername)";
+    document.getElementById("nmcli").textContent =
+      "nmcli connection add type wifi con-name 'Renner UniFi' ssid 'Renner UniFi' " +
+      "wifi-sec.key-mgmt wpa-eap 802-1x.eap ttls 802-1x.phase2-auth pap " +
+      "802-1x.anonymous-identity anonymous 802-1x.identity " + quote(user || "BENUTZERNAME") + " " +
+      "802-1x.domain-suffix-match radius.renner.uno 802-1x.system-ca-certs yes " +
+      "802-1x.password-flags 2 && nmcli --ask connection up 'Renner UniFi'";
+  }
+  render("");
+  fetch("/whoami", { credentials: "same-origin" })
+    .then(function (r) { return r.ok ? r.text() : ""; })
+    .then(function (t) { render(t.trim()); })
+    .catch(function () {});
+
+  document.getElementById("copy-nmcli").addEventListener("click", function () {
+    var text = document.getElementById("nmcli").textContent;
+    var btn = this;
+    navigator.clipboard.writeText(text).then(function () {
+      btn.textContent = "Kopiert";
+      setTimeout(function () { btn.textContent = "Befehl kopieren"; }, 2000);
+    });
+  });
+})();
+</script>
+</body>
+</html>

wlan-setup/main.go

@@ -0,0 +1,59 @@
+// wlan-setup serves wlan.renner.uno behind the authentik gate: the setup page for the WLAN
+// "Renner UniFi" and, per device, an authorization-code sign-in that creates an authentik app
+// password as the user and answers with a Passpoint profile (Android, Apple) or a signed
+// CarrierProvisioning document that Windows Settings fetches once.
+package main
+
+import (
+	"context"
+	"errors"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+func main() {
+	log := slog.New(slog.NewJSONHandler(os.Stdout, nil))
+	cfg, err := loadConfig(os.Getenv)
+	if err != nil {
+		log.Error("invalid configuration", "err", err)
+		os.Exit(2)
+	}
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+	if err := run(ctx, cfg, log); err != nil {
+		log.Error("stopped", "err", err)
+		os.Exit(1)
+	}
+}
+
+func run(ctx context.Context, cfg Config, log *slog.Logger) error {
+	srv := &http.Server{
+		Addr:              cfg.Listen,
+		Handler:           newServer(cfg, log).routes(),
+		ReadHeaderTimeout: 10 * time.Second,
+		ReadTimeout:       30 * time.Second,
+		// A callback makes up to four authentik calls of at most 10 s each.
+		WriteTimeout:   60 * time.Second,
+		IdleTimeout:    2 * time.Minute,
+		MaxHeaderBytes: 64 << 10,
+	}
+	failed := make(chan error, 1)
+	go func() { failed <- srv.ListenAndServe() }()
+	log.Info("listening", "addr", cfg.Listen)
+
+	select {
+	case <-ctx.Done():
+	case err := <-failed:
+		if !errors.Is(err, http.ErrServerClosed) {
+			return err
+		}
+	}
+	log.Info("shutting down")
+	shutdown, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	return srv.Shutdown(shutdown)
+}

wlan-setup/profiles.go

@@ -0,0 +1,123 @@
+package main
+
+import (
+	"encoding/base64"
+	"strings"
+)
+
+// isrgRootX1 is the trust anchor of the radius-tls chain (DER, base64).
+const isrgRootX1 = "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"
+
+// carrierID identifies the Windows provisioning document; a reinstall replaces the profile.
+const carrierID = "{5423c37a-7530-4ce9-8f87-a2574ea006bc}"
+
+func b64(s string) string { return base64.StdEncoding.EncodeToString([]byte(s)) }
+
+func node(name, inner string) string {
+	return "<Node><NodeName>" + name + "</NodeName>" + inner + "</Node>"
+}
+
+func leaf(name, value string) string { return node(name, "<Value>"+value+"</Value>") }
+
+var xmlEscaper = strings.NewReplacer("&", "&amp;", "<", "&lt;", ">", "&gt;")
+
+func xmlText(s string) string { return xmlEscaper.Replace(s) }
+
+// androidProfile is the application/x-wifi-config body: base64 of a MIME multipart with the
+// Passpoint R1 PPS MO and the trust anchor.
+func androidProfile(user, password string) string {
+	pps := `<MgmtTree xmlns="syncml:dmddf1.2"><VerDTD>1.2</VerDTD>` +
+		node("PerProviderSubscription",
+			"<RTProperties><Type><DDFName>urn:wfa:mo:hotspot2dot0-perprovidersubscription:1.0</DDFName></Type></RTProperties>"+
+				node("i001",
+					node("HomeSP", leaf("FriendlyName", "Renner")+leaf("FQDN", "renner.uno"))+
+						node("Credential",
+							leaf("Realm", "renner.uno")+
+								node("UsernamePassword",
+									leaf("Username", user)+
+										leaf("Password", b64(password))+
+										node("EAPMethod", leaf("EAPType", "21")+leaf("InnerMethod", "PAP"))))+
+						node("Extension", node("Android",
+							node("AAAServerTrustedNames", leaf("FQDN", "radius.renner.uno")))))) +
+		"</MgmtTree>"
+	mime := "Content-Type: multipart/mixed; boundary={boundary}\r\n" +
+		"Content-Transfer-Encoding: base64\r\n\r\n" +
+		"--{boundary}\r\n" +
+		"Content-Type: application/x-passpoint-profile\r\n" +
+		"Content-Transfer-Encoding: base64\r\n\r\n" +
+		b64(pps) + "\r\n" +
+		"--{boundary}\r\n" +
+		"Content-Type: application/x-x509-ca-cert\r\n" +
+		"Content-Transfer-Encoding: base64\r\n\r\n" +
+		isrgRootX1 + "\r\n" +
+		"--{boundary}--\r\n"
+	return b64(mime)
+}
+
+// appleProfile is the .mobileconfig: com.apple.wifi.managed with Passpoint matching. Fixed
+// identifiers and UUIDs, so a reinstall replaces the previous profile.
+func appleProfile(user, password string) string {
+	return `<?xml version="1.0" encoding="UTF-8"?>` + "\n" +
+		`<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">` + "\n" +
+		`<plist version="1.0"><dict>` +
+		`<key>PayloadContent</key><array><dict>` +
+		`<key>PayloadType</key><string>com.apple.wifi.managed</string>` +
+		`<key>PayloadVersion</key><integer>1</integer>` +
+		`<key>PayloadIdentifier</key><string>uno.renner.wifi.renner-unifi.network</string>` +
+		`<key>PayloadUUID</key><string>824959bf-c55d-4ed2-b569-c33f3759c2b6</string>` +
+		`<key>PayloadDisplayName</key><string>Renner UniFi</string>` +
+		`<key>PayloadOrganization</key><string>Renner</string>` +
+		`<key>IsHotspot</key><true/>` +
+		`<key>DomainName</key><string>renner.uno</string>` +
+		`<key>NAIRealmNames</key><array><string>renner.uno</string></array>` +
+		`<key>DisplayedOperatorName</key><string>Renner</string>` +
+		`<key>ServiceProviderRoamingEnabled</key><false/>` +
+		`<key>AutoJoin</key><true/>` +
+		`<key>EncryptionType</key><string>Any</string>` +
+		`<key>EAPClientConfiguration</key><dict>` +
+		`<key>UserName</key><string>` + xmlText(user) + `</string>` +
+		`<key>UserPassword</key><string>` + xmlText(password) + `</string>` +
+		`<key>OuterIdentity</key><string>anonymous</string>` +
+		`<key>AcceptEAPTypes</key><array><integer>21</integer></array>` +
+		`<key>TTLSInnerAuthentication</key><string>PAP</string>` +
+		`<key>TLSTrustedServerNames</key><array><string>radius.renner.uno</string></array>` +
+		`</dict></dict></array>` +
+		`<key>PayloadType</key><string>Configuration</string>` +
+		`<key>PayloadVersion</key><integer>1</integer>` +
+		`<key>PayloadIdentifier</key><string>uno.renner.wifi.renner-unifi</string>` +
+		`<key>PayloadUUID</key><string>7175a2a3-ddd3-42ea-b4ad-b7e5501892f3</string>` +
+		`<key>PayloadDisplayName</key><string>WLAN Renner UniFi</string>` +
+		`<key>PayloadOrganization</key><string>Renner</string>` +
+		`</dict></plist>` + "\n"
+}
+
+// windowsProfile is the unsigned CarrierProvisioning document: one Hotspot 2.0 WLAN profile,
+// WPA3 Enterprise, EAP-TTLS with inner PAP, and the user's credentials.
+func windowsProfile(user, password string) string {
+	const common = ` xmlns="http://www.microsoft.com/provisioning/EapCommon"`
+	return `<CarrierProvisioning xmlns="http://www.microsoft.com/networking/CarrierControl/v1">` +
+		`<Global><CarrierId>` + carrierID + `</CarrierId><SubscriberId>renner-unifi</SubscriberId></Global>` +
+		`<WLANProfiles><WLANProfile xmlns="http://www.microsoft.com/networking/CarrierControl/WLAN/v1">` +
+		`<name>Renner UniFi</name>` +
+		`<SSIDConfig><SSID><name>Renner UniFi</name></SSID></SSIDConfig>` +
+		`<Hotspot2><DomainName>renner.uno</DomainName><NAIRealm><name>renner.uno</name></NAIRealm></Hotspot2>` +
+		`<MSM><security>` +
+		`<authEncryption><authentication>WPA3ENT</authentication><encryption>AES</encryption><useOneX>true</useOneX></authEncryption>` +
+		`<OneX xmlns="http://www.microsoft.com/networking/OneX/v1"><authMode>user</authMode><EAPConfig>` +
+		`<EapHostConfig xmlns="http://www.microsoft.com/provisioning/EapHostConfig">` +
+		`<EapMethod><Type` + common + `>21</Type><VendorId` + common + `>0</VendorId>` +
+		`<VendorType` + common + `>0</VendorType><AuthorId` + common + `>311</AuthorId></EapMethod>` +
+		`<Config><EapTtls xmlns="http://www.microsoft.com/provisioning/EapTtlsConnectionPropertiesV1">` +
+		`<ServerValidation><ServerNames>radius.renner.uno</ServerNames>` +
+		`<TrustedRootCAHash>ca bd 2a 79 a1 07 6a 31 f2 1d 25 36 35 cb 03 9d 43 29 a5 e8</TrustedRootCAHash>` +
+		`<DisablePrompt>true</DisablePrompt></ServerValidation>` +
+		`<Phase2Authentication><PAPAuthentication></PAPAuthentication></Phase2Authentication>` +
+		`<Phase1Identity><IdentityPrivacy>true</IdentityPrivacy><AnonymousIdentity>anonymous</AnonymousIdentity></Phase1Identity>` +
+		`</EapTtls></Config></EapHostConfig></EAPConfig></OneX>` +
+		`<EapHostUserCredentials xmlns="http://www.microsoft.com/provisioning/EapHostUserCredentials" xmlns:eapCommon="http://www.microsoft.com/provisioning/EapCommon">` +
+		`<EapMethod><eapCommon:Type>21</eapCommon:Type><eapCommon:AuthorId>311</eapCommon:AuthorId></EapMethod>` +
+		`<Credentials><EapTtls xmlns="http://www.microsoft.com/provisioning/EapTtlsUserPropertiesV1">` +
+		`<Username>` + xmlText(user) + `</Username><Password>` + xmlText(password) + `</Password>` +
+		`</EapTtls></Credentials></EapHostUserCredentials>` +
+		`</security></MSM></WLANProfile></WLANProfiles></CarrierProvisioning>`
+}

wlan-setup/server.go

@@ -0,0 +1,239 @@
+package main
+
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	_ "embed"
+	"encoding/base64"
+	"io"
+	"log/slog"
+	"net/http"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+//go:embed index.html
+var indexHTML []byte
+
+const (
+	clientID     = "wlan-setup"
+	stateCookie  = "wlan_oauth_state"
+	lifetimeDays = 29
+	restart      = "Bitte die Einrichtung neu starten.\n"
+	failed       = "Die Einrichtung ist fehlgeschlagen.\n"
+)
+
+// userPattern admits only plain usernames into a generated file.
+var userPattern = regexp.MustCompile(`^[A-Za-z0-9._@+-]{1,64}$`)
+
+var identifierUnsafe = regexp.MustCompile(`[^a-z0-9-]`)
+
+var platformLabels = map[string]string{"android": "Android", "apple": "Apple", "windows": "Windows"}
+
+// Server serves the setup page and the per-platform flows.
+type Server struct {
+	cfg       Config
+	authentik *Authentik
+	profiles  *ProfileStore
+	now       func() time.Time
+	log       *slog.Logger
+}
+
+func newServer(cfg Config, log *slog.Logger) *Server {
+	return &Server{
+		cfg:       cfg,
+		authentik: &Authentik{base: cfg.AuthentikURL, secret: cfg.ClientSecret, http: &http.Client{Timeout: 10 * time.Second}},
+		profiles:  newProfileStore(time.Now),
+		now:       time.Now,
+		log:       log,
+	}
+}
+
+func (s *Server) routes() http.Handler {
+	mux := http.NewServeMux()
+	mux.HandleFunc("GET /{$}", func(w http.ResponseWriter, _ *http.Request) {
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		_, _ = w.Write(indexHTML)
+	})
+	mux.HandleFunc("GET /whoami", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		if u := r.Header.Get("X-authentik-username"); userPattern.MatchString(u) {
+			_, _ = io.WriteString(w, u)
+		}
+	})
+	mux.HandleFunc("GET /healthz", func(w http.ResponseWriter, _ *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		_, _ = io.WriteString(w, "ok\n")
+	})
+	for name := range platformLabels {
+		mux.HandleFunc("GET /"+name+"/install", func(w http.ResponseWriter, r *http.Request) { s.install(w, r, name) })
+		mux.HandleFunc("GET /"+name+"/callback", func(w http.ResponseWriter, r *http.Request) { s.callback(w, r, name) })
+	}
+	mux.HandleFunc("GET /windows/profile/{token}", s.windowsProfile)
+	mux.HandleFunc("/", http.NotFound)
+	return noStore(mux)
+}
+
+func noStore(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "no-store")
+		h.ServeHTTP(w, r)
+	})
+}
+
+func random(n int) string {
+	b := make([]byte, n)
+	_, _ = rand.Read(b)
+	return base64.RawURLEncoding.EncodeToString(b)
+}
+
+func (s *Server) redirectURI(name string) string { return s.cfg.PublicURL + "/" + name + "/callback" }
+
+func setStateCookie(w http.ResponseWriter, name, value string, maxAge int) {
+	w.Header().Set("Set-Cookie", stateCookie+"="+value+"; Path=/"+name+"/; Max-Age="+strconv.Itoa(maxAge)+
+		"; HttpOnly; Secure; SameSite=Lax")
+}
+
+func redirect(w http.ResponseWriter, location string) {
+	w.Header().Set("Location", location)
+	w.WriteHeader(http.StatusFound)
+}
+
+func text(w http.ResponseWriter, status int, body string) {
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.WriteHeader(status)
+	_, _ = io.WriteString(w, body)
+}
+
+// install starts an authorization-code sign-in at authentik; the user is already signed in there.
+func (s *Server) install(w http.ResponseWriter, _ *http.Request, name string) {
+	state := random(24)
+	setStateCookie(w, name, state, 300)
+	redirect(w, s.cfg.AuthorizeURL+"?"+form(
+		"response_type", "code",
+		"client_id", clientID,
+		"redirect_uri", s.redirectURI(name),
+		"scope", "openid profile goauthentik.io/api",
+		"state", state,
+	))
+}
+
+func stateFrom(r *http.Request) string {
+	c, err := r.Cookie(stateCookie)
+	if err != nil {
+		return ""
+	}
+	return c.Value
+}
+
+// callback creates a new app password as the user and answers with the platform's profile.
+func (s *Server) callback(w http.ResponseWriter, r *http.Request, name string) {
+	q := r.URL.Query()
+	state, code := stateFrom(r), q.Get("code")
+	if state == "" || code == "" || subtle.ConstantTimeCompare([]byte(state), []byte(q.Get("state"))) != 1 {
+		text(w, http.StatusBadRequest, restart)
+		return
+	}
+	fail := func(reason string, args ...any) {
+		s.log.Error("wlan-setup "+name+": "+reason, args...)
+		text(w, http.StatusBadGateway, failed)
+	}
+
+	// Windows signs the profile: without key and chain there is nothing to hand out, so no app
+	// password is created.
+	var signer *Signer
+	if name == "windows" {
+		var err error
+		if signer, err = loadSigner(s.cfg.SigningKey, s.cfg.SigningCert); err != nil {
+			fail("cannot load the signing key", "err", err)
+			return
+		}
+	}
+
+	ctx := r.Context()
+	access, err := s.authentik.Exchange(ctx, code, s.redirectURI(name))
+	if err != nil {
+		fail("token exchange", "err", err)
+		return
+	}
+	user, err := s.authentik.Username(ctx, access)
+	if err != nil {
+		fail("user lookup", "err", err)
+		return
+	}
+	if !userPattern.MatchString(user) || user != r.Header.Get("X-authentik-username") {
+		s.log.Warn("wlan-setup "+name+": the token's user is not the signed-in user", "user", user)
+		w.WriteHeader(http.StatusForbidden)
+		return
+	}
+
+	now := s.now().UTC()
+	suffix := strings.Map(func(c rune) rune {
+		if (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') {
+			return c
+		}
+		return 'x'
+	}, random(24)[:6])
+	identifier := "wlan-" + name + "-" + identifierUnsafe.ReplaceAllString(strings.ToLower(user), "-") + "-" +
+		now.Format("20060102T150405") + "-" + suffix
+	key, err := s.authentik.AppPassword(ctx, access, tokenRequest{
+		Identifier:  identifier,
+		Intent:      "app_password",
+		Description: "WLAN " + platformLabels[name] + ", " + now.Format("2006-01-02") + " (wlan.renner.uno)",
+		Expiring:    true,
+		Expires:     now.Add(lifetimeDays * 24 * time.Hour).Format("2006-01-02T15:04:05.000Z07:00"),
+	})
+	if err != nil {
+		fail("app password", "err", err)
+		return
+	}
+
+	switch name {
+	case "android":
+		setStateCookie(w, name, "", 0)
+		w.Header().Set("Content-Type", "application/x-wifi-config")
+		w.Header().Set("Content-Transfer-Encoding", "base64")
+		_, _ = io.WriteString(w, androidProfile(user, key))
+	case "apple":
+		setStateCookie(w, name, "", 0)
+		w.Header().Set("Content-Type", "application/x-apple-aspen-config")
+		w.Header().Set("Content-Disposition", `attachment; filename="renner-unifi.mobileconfig"`)
+		_, _ = io.WriteString(w, appleProfile(user, key))
+	case "windows":
+		body, err := signer.Sign(windowsProfile(user, key))
+		if err != nil {
+			fail("signing the profile", "err", err)
+			return
+		}
+		token := random(32)
+		if !s.profiles.Put(token, body) {
+			fail("too many profiles waiting to be fetched")
+			return
+		}
+		setStateCookie(w, name, "", 0)
+		redirect(w, "ms-settings:wifi-provisioning?uri="+s.cfg.PublicURL+"/windows/profile/"+token)
+	}
+}
+
+// windowsProfile hands out a signed profile once. Windows Settings fetches it without the
+// authentik session: the unguessable single-use token is the only gate.
+func (s *Server) windowsProfile(w http.ResponseWriter, r *http.Request) {
+	token := r.PathValue("token")
+	if r.Method == http.MethodHead {
+		if !s.profiles.Has(token) {
+			http.NotFound(w, r)
+			return
+		}
+		w.Header().Set("Content-Type", "text/xml")
+		return
+	}
+	body, ok := s.profiles.Take(token)
+	if !ok {
+		http.NotFound(w, r)
+		return
+	}
+	w.Header().Set("Content-Type", "text/xml")
+	_, _ = w.Write(body)
+}

wlan-setup/server_test.go

@@ -0,0 +1,648 @@
+package main
+
+import (
+	"bytes"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/pem"
+	"encoding/xml"
+	"io"
+	"log/slog"
+	"math/big"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/beevik/etree"
+	dsig "github.com/russellhaering/goxmldsig"
+)
+
+const (
+	testSecret = "client-secret"
+	testAccess = "access-token-123"
+	testKey    = "app-password-<&>-456"
+	testCode   = "code-789"
+)
+
+// fakeAuthentik answers the four calls of a callback and records what it received.
+type fakeAuthentik struct {
+	t        *testing.T
+	username string
+	fail     string // path that answers 500
+
+	mu       sync.Mutex
+	requests []string
+	created  tokenRequest
+}
+
+func (f *fakeAuthentik) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	f.mu.Lock()
+	f.requests = append(f.requests, r.Method+" "+r.URL.Path)
+	f.mu.Unlock()
+	t := f.t
+	if r.Host != "auth.renner.uno" {
+		t.Errorf("%s: Host %q", r.URL.Path, r.Host)
+	}
+	if r.Header.Get("Cookie") != "" {
+		t.Errorf("%s: a cookie reached authentik", r.URL.Path)
+	}
+	if r.URL.Path == f.fail {
+		http.Error(w, `{"detail":"broken"}`, http.StatusInternalServerError)
+		return
+	}
+	bearer := func() bool {
+		if got := r.Header.Get("Authorization"); got != "Bearer "+testAccess {
+			t.Errorf("%s: Authorization %q", r.URL.Path, got)
+			return false
+		}
+		return true
+	}
+	switch {
+	case r.Method == http.MethodPost && r.URL.Path == "/application/o/token/":
+		user, pass, ok := r.BasicAuth()
+		if !ok || user != "wlan-setup" || pass != testSecret {
+			t.Errorf("token: Basic auth %q %v", user, ok)
+		}
+		if ct := r.Header.Get("Content-Type"); ct != "application/x-www-form-urlencoded" {
+			t.Errorf("token: Content-Type %q", ct)
+		}
+		if err := r.ParseForm(); err != nil {
+			t.Fatal(err)
+		}
+		if r.PostForm.Get("grant_type") != "authorization_code" || r.PostForm.Get("code") != testCode {
+			t.Errorf("token: form %v", r.PostForm)
+		}
+		platform := strings.Split(r.PostForm.Get("redirect_uri"), "/")[3]
+		if want := "https://wlan.renner.uno/" + platform + "/callback"; r.PostForm.Get("redirect_uri") != want {
+			t.Errorf("token: redirect_uri %q", r.PostForm.Get("redirect_uri"))
+		}
+		_, _ = io.WriteString(w, `{"access_token":"`+testAccess+`","token_type":"Bearer"}`)
+	case r.Method == http.MethodGet && r.URL.Path == "/api/v3/core/users/me/":
+		if bearer() {
+			_ = json.NewEncoder(w).Encode(map[string]any{"user": map[string]any{"username": f.username}})
+		}
+	case r.Method == http.MethodPost && r.URL.Path == "/api/v3/core/tokens/":
+		if !bearer() {
+			return
+		}
+		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
+			t.Errorf("tokens: Content-Type %q", ct)
+		}
+		var tr tokenRequest
+		if err := json.NewDecoder(r.Body).Decode(&tr); err != nil {
+			t.Fatal(err)
+		}
+		f.mu.Lock()
+		f.created = tr
+		f.mu.Unlock()
+		w.WriteHeader(http.StatusCreated)
+		_, _ = io.WriteString(w, `{"identifier":"`+tr.Identifier+`"}`)
+	case r.Method == http.MethodGet && strings.HasPrefix(r.URL.Path, "/api/v3/core/tokens/") &&
+		strings.HasSuffix(r.URL.Path, "/view_key/"):
+		f.mu.Lock()
+		want := "/api/v3/core/tokens/" + f.created.Identifier + "/view_key/"
+		f.mu.Unlock()
+		if r.URL.Path != want {
+			t.Errorf("view_key: path %q, want %q", r.URL.Path, want)
+		}
+		if bearer() {
+			_ = json.NewEncoder(w).Encode(map[string]string{"key": testKey})
+		}
+	default:
+		t.Errorf("unexpected call %s %s", r.Method, r.URL.Path)
+		http.NotFound(w, r)
+	}
+}
+
+type testCert struct {
+	cert     *x509.Certificate
+	keyFile  string
+	certFile string
+}
+
+// writeSigningFiles writes a fresh RSA key (PKCS#8) and a chain of a self-signed leaf plus a
+// second certificate, as cert-manager would mount them.
+func writeSigningFiles(t *testing.T) testCert {
+	t.Helper()
+	dir := t.TempDir()
+	key, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatal(err)
+	}
+	mk := func(cn string, k *rsa.PrivateKey) []byte {
+		tmpl := &x509.Certificate{
+			SerialNumber: big.NewInt(time.Now().UnixNano()),
+			Subject:      pkix.Name{CommonName: cn},
+			NotBefore:    time.Now().Add(-time.Hour),
+			NotAfter:     time.Now().Add(time.Hour),
+			KeyUsage:     x509.KeyUsageDigitalSignature,
+		}
+		der, err := x509.CreateCertificate(rand.Reader, tmpl, tmpl, &k.PublicKey, k)
+		if err != nil {
+			t.Fatal(err)
+		}
+		return der
+	}
+	leaf := mk("wlan.renner.uno", key)
+	other, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatal(err)
+	}
+	intermediate := mk("intermediate", other)
+	pkcs8, err := x509.MarshalPKCS8PrivateKey(key)
+	if err != nil {
+		t.Fatal(err)
+	}
+	tc := testCert{keyFile: filepath.Join(dir, "tls.key"), certFile: filepath.Join(dir, "tls.crt")}
+	if err := os.WriteFile(tc.keyFile, pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: pkcs8}), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	chain := append(pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: leaf}),
+		pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: intermediate})...)
+	if err := os.WriteFile(tc.certFile, chain, 0o600); err != nil {
+		t.Fatal(err)
+	}
+	tc.cert, _ = x509.ParseCertificate(leaf)
+	return tc
+}
+
+type harness struct {
+	srv     *Server
+	handler http.Handler
+	fake    *fakeAuthentik
+	signing testCert
+	clock   *fakeClock
+}
+
+type fakeClock struct {
+	mu  sync.Mutex
+	now time.Time
+}
+
+func (c *fakeClock) Now() time.Time { c.mu.Lock(); defer c.mu.Unlock(); return c.now }
+func (c *fakeClock) Add(d time.Duration) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.now = c.now.Add(d)
+}
+
+func newHarness(t *testing.T) *harness {
+	t.Helper()
+	fake := &fakeAuthentik{t: t, username: "Alice.Smith"}
+	upstream := httptest.NewServer(fake)
+	t.Cleanup(upstream.Close)
+	signing := writeSigningFiles(t)
+	cfg, err := loadConfig(env(map[string]string{
+		"WLAN_SETUP_CLIENT_SECRET": testSecret,
+		"AUTHENTIK_INTERNAL_URL":   upstream.URL,
+		"SIGNING_KEY":              signing.keyFile,
+		"SIGNING_CERT":             signing.certFile,
+	}))
+	if err != nil {
+		t.Fatal(err)
+	}
+	srv := newServer(cfg, slog.New(slog.NewTextHandler(io.Discard, nil)))
+	clock := &fakeClock{now: time.Date(2026, 11, 5, 9, 8, 7, 0, time.UTC)}
+	srv.now = clock.Now
+	srv.profiles.now = clock.Now
+	return &harness{srv: srv, handler: srv.routes(), fake: fake, signing: signing, clock: clock}
+}
+
+func env(m map[string]string) func(string) string { return func(k string) string { return m[k] } }
+
+func (h *harness) do(req *http.Request) *httptest.ResponseRecorder {
+	rec := httptest.NewRecorder()
+	h.handler.ServeHTTP(rec, req)
+	if rec.Header().Get("Cache-Control") != "no-store" {
+		panic("no Cache-Control: no-store on " + req.URL.Path)
+	}
+	return rec
+}
+
+func (h *harness) callback(platform, cookieState, queryState, user string) *httptest.ResponseRecorder {
+	q := url.Values{"state": {queryState}, "code": {testCode}}
+	req := httptest.NewRequest(http.MethodGet, "/"+platform+"/callback?"+q.Encode(), nil)
+	if cookieState != "" {
+		req.Header.Set("Cookie", "other=1; wlan_oauth_state="+cookieState)
+	}
+	req.Header.Set("X-authentik-username", user)
+	return h.do(req)
+}
+
+func TestInstall(t *testing.T) {
+	h := newHarness(t)
+	for _, platform := range []string{"android", "apple", "windows"} {
+		rec := h.do(httptest.NewRequest(http.MethodGet, "/"+platform+"/install", nil))
+		if rec.Code != http.StatusFound {
+			t.Fatalf("%s: status %d", platform, rec.Code)
+		}
+		cookie := rec.Header().Get("Set-Cookie")
+		m := regexp.MustCompile(`^wlan_oauth_state=([A-Za-z0-9_-]{32}); Path=/` + platform +
+			`/; Max-Age=300; HttpOnly; Secure; SameSite=Lax$`).FindStringSubmatch(cookie)
+		if m == nil {
+			t.Fatalf("%s: cookie %q", platform, cookie)
+		}
+		loc := rec.Header().Get("Location")
+		if !strings.HasPrefix(loc, "https://auth.renner.uno/application/o/authorize/?response_type=code&") {
+			t.Errorf("%s: location %q", platform, loc)
+		}
+		if !strings.Contains(loc, "scope=openid%20profile%20goauthentik.io%2Fapi") {
+			t.Errorf("%s: scope not encoded like encodeURIComponent: %q", platform, loc)
+		}
+		u, err := url.Parse(loc)
+		if err != nil {
+			t.Fatal(err)
+		}
+		q := u.Query()
+		if q.Get("client_id") != "wlan-setup" || q.Get("redirect_uri") != "https://wlan.renner.uno/"+platform+"/callback" ||
+			q.Get("scope") != "openid profile goauthentik.io/api" || q.Get("state") != m[1] || q.Get("response_type") != "code" {
+			t.Errorf("%s: query %v", platform, q)
+		}
+	}
+}
+
+func TestCallbackStateMismatch(t *testing.T) {
+	h := newHarness(t)
+	for _, c := range []struct{ cookie, query string }{{"abc", "abd"}, {"", "abc"}, {"abc", ""}} {
+		rec := h.callback("android", c.cookie, c.query, "Alice.Smith")
+		if rec.Code != http.StatusBadRequest || rec.Body.String() != "Bitte die Einrichtung neu starten.\n" {
+			t.Errorf("%+v: %d %q", c, rec.Code, rec.Body.String())
+		}
+	}
+	req := httptest.NewRequest(http.MethodGet, "/apple/callback?state=abc", nil)
+	req.Header.Set("Cookie", "wlan_oauth_state=abc")
+	if rec := h.do(req); rec.Code != http.StatusBadRequest {
+		t.Errorf("no code: %d", rec.Code)
+	}
+	if len(h.fake.requests) != 0 {
+		t.Errorf("authentik was called: %v", h.fake.requests)
+	}
+}
+
+func TestCallbackUserMismatch(t *testing.T) {
+	h := newHarness(t)
+	if rec := h.callback("android", "s", "s", "bob"); rec.Code != http.StatusForbidden {
+		t.Errorf("other user: %d", rec.Code)
+	}
+	h.fake.username = "bad user"
+	if rec := h.callback("apple", "s", "s", "bad user"); rec.Code != http.StatusForbidden {
+		t.Errorf("unsafe username: %d", rec.Code)
+	}
+	for _, r := range h.fake.requests {
+		if strings.HasPrefix(r, "POST /api/v3/core/tokens/") {
+			t.Errorf("an app password was created for a mismatched user")
+		}
+	}
+}
+
+func TestCallbackUpstreamError(t *testing.T) {
+	for _, path := range []string{"/application/o/token/", "/api/v3/core/users/me/", "/api/v3/core/tokens/"} {
+		h := newHarness(t)
+		h.fake.fail = path
+		rec := h.callback("android", "s", "s", "Alice.Smith")
+		if rec.Code != http.StatusBadGateway || rec.Body.String() != "Die Einrichtung ist fehlgeschlagen.\n" {
+			t.Errorf("%s: %d %q", path, rec.Code, rec.Body.String())
+		}
+		if strings.Contains(rec.Header().Get("Set-Cookie"), "Max-Age=0") {
+			t.Errorf("%s: the state cookie was cleared on failure", path)
+		}
+	}
+}
+
+func TestCallbackWindowsWithoutSigningKey(t *testing.T) {
+	h := newHarness(t)
+	h.srv.cfg.SigningKey = filepath.Join(t.TempDir(), "missing.key")
+	if rec := h.callback("windows", "s", "s", "Alice.Smith"); rec.Code != http.StatusBadGateway {
+		t.Errorf("status %d", rec.Code)
+	}
+	if len(h.fake.requests) != 0 {
+		t.Errorf("authentik was called without a signing key: %v", h.fake.requests)
+	}
+}
+
+func checkCreated(t *testing.T, h *harness, platform, label string) {
+	t.Helper()
+	got := h.fake.created
+	if !regexp.MustCompile(`^wlan-` + platform + `-alice-smith-20261105T090807-[A-Za-z0-9]{6}$`).MatchString(got.Identifier) {
+		t.Errorf("identifier %q", got.Identifier)
+	}
+	if got.Intent != "app_password" || !got.Expiring || got.Expires != "2026-12-04T09:08:07.000Z" ||
+		got.Description != "WLAN "+label+", 2026-11-05 (wlan.renner.uno)" {
+		t.Errorf("token request %+v", got)
+	}
+	want := []string{"POST /application/o/token/", "GET /api/v3/core/users/me/", "POST /api/v3/core/tokens/",
+		"GET /api/v3/core/tokens/" + got.Identifier + "/view_key/"}
+	if strings.Join(h.fake.requests, "|") != strings.Join(want, "|") {
+		t.Errorf("calls %v", h.fake.requests)
+	}
+}
+
+func checkCleared(t *testing.T, rec *httptest.ResponseRecorder, platform string) {
+	t.Helper()
+	if got := rec.Header().Get("Set-Cookie"); got != "wlan_oauth_state=; Path=/"+platform+"/; Max-Age=0; HttpOnly; Secure; SameSite=Lax" {
+		t.Errorf("cookie %q", got)
+	}
+}
+
+func TestCallbackAndroid(t *testing.T) {
+	h := newHarness(t)
+	rec := h.callback("android", "s", "s", "Alice.Smith")
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status %d %q", rec.Code, rec.Body.String())
+	}
+	checkCreated(t, h, "android", "Android")
+	checkCleared(t, rec, "android")
+	if rec.Header().Get("Content-Type") != "application/x-wifi-config" ||
+		rec.Header().Get("Content-Transfer-Encoding") != "base64" || rec.Header().Get("Content-Disposition") != "" {
+		t.Errorf("headers %v", rec.Header())
+	}
+	mime, err := base64.StdEncoding.DecodeString(rec.Body.String())
+	if err != nil {
+		t.Fatal(err)
+	}
+	parts := strings.Split(string(mime), "--{boundary}\r\n")
+	var pps string
+	for _, p := range parts {
+		if body, ok := strings.CutPrefix(p, "Content-Type: application/x-passpoint-profile\r\nContent-Transfer-Encoding: base64\r\n\r\n"); ok {
+			raw, err := base64.StdEncoding.DecodeString(strings.TrimSpace(body))
+			if err != nil {
+				t.Fatal(err)
+			}
+			pps = string(raw)
+		}
+	}
+	if !strings.Contains(pps, "<Node><NodeName>Username</NodeName><Value>Alice.Smith</Value></Node>") ||
+		!strings.Contains(pps, "<Node><NodeName>Password</NodeName><Value>"+base64.StdEncoding.EncodeToString([]byte(testKey))+"</Value></Node>") {
+		t.Errorf("pps %s", pps)
+	}
+	if !strings.Contains(string(mime), "Content-Type: application/x-x509-ca-cert\r\nContent-Transfer-Encoding: base64\r\n\r\n"+isrgRootX1+"\r\n--{boundary}--\r\n") {
+		t.Error("trust anchor part missing")
+	}
+}
+
+// plistValue decodes one plist value: dict, array, string, integer, true, false.
+func plistValue(d *xml.Decoder, start xml.StartElement) (any, error) {
+	switch start.Name.Local {
+	case "dict":
+		m := map[string]any{}
+		var key string
+		for {
+			tok, err := d.Token()
+			if err != nil {
+				return nil, err
+			}
+			switch el := tok.(type) {
+			case xml.StartElement:
+				if el.Name.Local == "key" {
+					if err := d.DecodeElement(&key, &el); err != nil {
+						return nil, err
+					}
+					continue
+				}
+				v, err := plistValue(d, el)
+				if err != nil {
+					return nil, err
+				}
+				m[key] = v
+			case xml.EndElement:
+				return m, nil
+			}
+		}
+	case "array":
+		var a []any
+		for {
+			tok, err := d.Token()
+			if err != nil {
+				return nil, err
+			}
+			switch el := tok.(type) {
+			case xml.StartElement:
+				v, err := plistValue(d, el)
+				if err != nil {
+					return nil, err
+				}
+				a = append(a, v)
+			case xml.EndElement:
+				return a, nil
+			}
+		}
+	case "true", "false":
+		return start.Name.Local == "true", d.Skip()
+	default:
+		var s string
+		err := d.DecodeElement(&s, &start)
+		return s, err
+	}
+}
+
+func parsePlist(t *testing.T, body []byte) map[string]any {
+	t.Helper()
+	d := xml.NewDecoder(bytes.NewReader(body))
+	for {
+		tok, err := d.Token()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if el, ok := tok.(xml.StartElement); ok && el.Name.Local == "dict" {
+			v, err := plistValue(d, el)
+			if err != nil {
+				t.Fatal(err)
+			}
+			return v.(map[string]any)
+		}
+	}
+}
+
+func TestCallbackApple(t *testing.T) {
+	h := newHarness(t)
+	rec := h.callback("apple", "s", "s", "Alice.Smith")
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status %d %q", rec.Code, rec.Body.String())
+	}
+	checkCreated(t, h, "apple", "Apple")
+	checkCleared(t, rec, "apple")
+	if rec.Header().Get("Content-Type") != "application/x-apple-aspen-config" ||
+		rec.Header().Get("Content-Disposition") != `attachment; filename="renner-unifi.mobileconfig"` {
+		t.Errorf("headers %v", rec.Header())
+	}
+	top := parsePlist(t, rec.Body.Bytes())
+	if top["PayloadType"] != "Configuration" || top["PayloadUUID"] != "7175a2a3-ddd3-42ea-b4ad-b7e5501892f3" {
+		t.Errorf("top %v", top)
+	}
+	wifi := top["PayloadContent"].([]any)[0].(map[string]any)
+	if wifi["IsHotspot"] != true || wifi["DomainName"] != "renner.uno" ||
+		len(wifi["NAIRealmNames"].([]any)) != 1 || wifi["NAIRealmNames"].([]any)[0] != "renner.uno" ||
+		wifi["PayloadUUID"] != "824959bf-c55d-4ed2-b569-c33f3759c2b6" {
+		t.Errorf("wifi %v", wifi)
+	}
+	eap := wifi["EAPClientConfiguration"].(map[string]any)
+	if eap["UserName"] != "Alice.Smith" || eap["UserPassword"] != testKey || eap["OuterIdentity"] != "anonymous" ||
+		eap["TTLSInnerAuthentication"] != "PAP" {
+		t.Errorf("eap %v", eap)
+	}
+}
+
+func (h *harness) windowsToken(t *testing.T) string {
+	t.Helper()
+	rec := h.callback("windows", "s", "s", "Alice.Smith")
+	if rec.Code != http.StatusFound {
+		t.Fatalf("status %d %q", rec.Code, rec.Body.String())
+	}
+	checkCleared(t, rec, "windows")
+	m := regexp.MustCompile(`^ms-settings:wifi-provisioning\?uri=https://wlan\.renner\.uno/windows/profile/([A-Za-z0-9_-]{43})$`).
+		FindStringSubmatch(rec.Header().Get("Location"))
+	if m == nil {
+		t.Fatalf("location %q", rec.Header().Get("Location"))
+	}
+	return m[1]
+}
+
+func validate(cert *x509.Certificate, body []byte) error {
+	doc := etree.NewDocument()
+	if err := doc.ReadFromBytes(body); err != nil {
+		return err
+	}
+	ctx := dsig.NewDefaultValidationContext(&dsig.MemoryX509CertificateStore{Roots: []*x509.Certificate{cert}})
+	_, err := ctx.Validate(doc.Root())
+	return err
+}
+
+func TestCallbackWindows(t *testing.T) {
+	h := newHarness(t)
+	token := h.windowsToken(t)
+	checkCreated(t, h, "windows", "Windows")
+
+	// No header or cookie: Windows Settings fetches it outside the authentik session.
+	head := h.do(httptest.NewRequest(http.MethodHead, "/windows/profile/"+token, nil))
+	if head.Code != http.StatusOK {
+		t.Errorf("HEAD: %d", head.Code)
+	}
+	rec := h.do(httptest.NewRequest(http.MethodGet, "/windows/profile/"+token, nil))
+	if rec.Code != http.StatusOK || rec.Header().Get("Content-Type") != "text/xml" {
+		t.Fatalf("first fetch: %d %v", rec.Code, rec.Header())
+	}
+	body := rec.Body.Bytes()
+	if again := h.do(httptest.NewRequest(http.MethodGet, "/windows/profile/"+token, nil)); again.Code != http.StatusNotFound {
+		t.Errorf("second fetch: %d", again.Code)
+	}
+
+	if err := validate(h.signing.cert, body); err != nil {
+		t.Fatalf("signature does not verify: %v\n%s", err, body)
+	}
+	s := string(body)
+	for _, want := range []string{
+		`<CarrierProvisioning xmlns="http://www.microsoft.com/networking/CarrierControl/v1">`,
+		`<Username>Alice.Smith</Username><Password>app-password-&lt;&amp;&gt;-456</Password>`,
+		`<Signature xmlns="http://www.w3.org/2000/09/xmldsig#"><SignedInfo>`,
+		`<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"></CanonicalizationMethod>`,
+		`<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"></SignatureMethod>`,
+		`<Reference URI=""><Transforms><Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"></Transform>`,
+		`<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"></DigestMethod>`,
+		`</Signature></CarrierProvisioning>`,
+	} {
+		if !strings.Contains(s, want) {
+			t.Errorf("missing %s", want)
+		}
+	}
+	// The unsigned document is already canonical: its SHA-1 is the reference digest.
+	sum := sha1.Sum([]byte(windowsProfile("Alice.Smith", testKey)))
+	if !strings.Contains(s, "<DigestValue>"+base64.StdEncoding.EncodeToString(sum[:])+"</DigestValue>") {
+		t.Error("the digest is not the SHA-1 of the unsigned document")
+	}
+	if !strings.HasPrefix(s, strings.TrimSuffix(windowsProfile("Alice.Smith", testKey), "</CarrierProvisioning>")+"<Signature ") {
+		t.Error("the signed document does not start with the unsigned one")
+	}
+	// Only the enveloped-signature transform, as in Microsoft's signed samples.
+	if n := strings.Count(s, "<Transform "); n != 1 {
+		t.Errorf("%d transforms, want 1", n)
+	}
+	if n := strings.Count(s, "<X509Certificate>"); n != 2 {
+		t.Errorf("%d certificates in KeyInfo, want the whole chain (2)", n)
+	}
+	leaf := base64.StdEncoding.EncodeToString(h.signing.cert.Raw)
+	if !strings.Contains(s, "<X509Data><X509Certificate>"+leaf+"</X509Certificate>") {
+		t.Error("the leaf is not the first certificate")
+	}
+
+	tampered := bytes.Replace(body, []byte("Alice.Smith"), []byte("Alice.Smitx"), 1)
+	if err := validate(h.signing.cert, tampered); err == nil {
+		t.Error("a tampered profile verifies")
+	}
+}
+
+func TestWindowsProfileExpires(t *testing.T) {
+	h := newHarness(t)
+	token := h.windowsToken(t)
+	h.clock.Add(profileTTL)
+	if rec := h.do(httptest.NewRequest(http.MethodGet, "/windows/profile/"+token, nil)); rec.Code != http.StatusNotFound {
+		t.Errorf("expired: %d", rec.Code)
+	}
+	if len(h.srv.profiles.profiles) != 0 {
+		t.Error("the expired profile was not purged")
+	}
+	if rec := h.do(httptest.NewRequest(http.MethodGet, "/windows/profile/unknown", nil)); rec.Code != http.StatusNotFound {
+		t.Errorf("unknown: %d", rec.Code)
+	}
+}
+
+func TestWhoamiHealthzIndexNotFound(t *testing.T) {
+	h := newHarness(t)
+	for _, c := range []struct{ user, want string }{{"Alice.Smith", "Alice.Smith"}, {"a b", ""}, {"", ""},
+		{strings.Repeat("a", 65), ""}} {
+		req := httptest.NewRequest(http.MethodGet, "/whoami", nil)
+		req.Header.Set("X-authentik-username", c.user)
+		rec := h.do(req)
+		if rec.Code != http.StatusOK || rec.Body.String() != c.want || !strings.HasPrefix(rec.Header().Get("Content-Type"), "text/plain") {
+			t.Errorf("whoami %q: %d %q", c.user, rec.Code, rec.Body.String())
+		}
+	}
+	if rec := h.do(httptest.NewRequest(http.MethodGet, "/healthz", nil)); rec.Code != http.StatusOK || rec.Body.String() != "ok\n" {
+		t.Errorf("healthz: %d %q", rec.Code, rec.Body.String())
+	}
+	rec := h.do(httptest.NewRequest(http.MethodGet, "/", nil))
+	if rec.Code != http.StatusOK || !strings.Contains(rec.Body.String(), `href="/windows/install"`) ||
+		strings.Contains(rec.Body.String(), ".cmd") {
+		t.Errorf("index: %d", rec.Code)
+	}
+	for _, req := range []*http.Request{
+		httptest.NewRequest(http.MethodGet, "/renner-unifi-wlan.cmd", nil),
+		httptest.NewRequest(http.MethodGet, "/linux/install", nil),
+		httptest.NewRequest(http.MethodPost, "/", nil),
+		httptest.NewRequest(http.MethodPost, "/android/install", nil),
+		httptest.NewRequest(http.MethodGet, "/index.html", nil),
+	} {
+		if rec := h.do(req); rec.Code != http.StatusNotFound {
+			t.Errorf("%s %s: %d", req.Method, req.URL.Path, rec.Code)
+		}
+	}
+}
+
+func TestLoadConfig(t *testing.T) {
+	if _, err := loadConfig(env(nil)); err == nil || !strings.Contains(err.Error(), "WLAN_SETUP_CLIENT_SECRET is not set") {
+		t.Errorf("missing secret: %v", err)
+	}
+	c, err := loadConfig(env(map[string]string{"WLAN_SETUP_CLIENT_SECRET": "x"}))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if c.AuthentikURL != "http://authentik-server.authentik.svc.cluster.local" ||
+		c.AuthorizeURL != "https://auth.renner.uno/application/o/authorize/" || c.PublicURL != "https://wlan.renner.uno" ||
+		c.SigningKey != "/etc/wlan-signing/tls.key" || c.SigningCert != "/etc/wlan-signing/tls.crt" || c.Listen != ":8080" {
+		t.Errorf("defaults %+v", c)
+	}
+	if _, err := loadConfig(env(map[string]string{"WLAN_SETUP_CLIENT_SECRET": "x", "PUBLIC_URL": "wlan"})); err == nil {
+		t.Error("relative PUBLIC_URL accepted")
+	}
+}

wlan-setup/sign.go

@@ -0,0 +1,121 @@
+package main
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+)
+
+// Signer holds the key and chain that sign the Windows provisioning document.
+type Signer struct {
+	key   *rsa.PrivateKey
+	chain [][]byte
+}
+
+// loadSigner reads the PEM key (PKCS#8 RSA) and the PEM chain (leaf first). It runs per request:
+// cert-manager rotates the files.
+func loadSigner(keyFile, certFile string) (*Signer, error) {
+	keyPEM, err := os.ReadFile(keyFile)
+	if err != nil {
+		return nil, fmt.Errorf("signing key: %w", err)
+	}
+	certPEM, err := os.ReadFile(certFile)
+	if err != nil {
+		return nil, fmt.Errorf("signing certificate: %w", err)
+	}
+	return parseSigner(keyPEM, certPEM)
+}
+
+func parseSigner(keyPEM, certPEM []byte) (*Signer, error) {
+	block, _ := pem.Decode(keyPEM)
+	if block == nil {
+		return nil, errors.New("signing key: no PEM block")
+	}
+	var key *rsa.PrivateKey
+	switch block.Type {
+	case "PRIVATE KEY":
+		k, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+		if err != nil {
+			return nil, fmt.Errorf("signing key: %w", err)
+		}
+		rk, ok := k.(*rsa.PrivateKey)
+		if !ok {
+			return nil, errors.New("signing key: not an RSA key")
+		}
+		key = rk
+	case "RSA PRIVATE KEY":
+		k, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+		if err != nil {
+			return nil, fmt.Errorf("signing key: %w", err)
+		}
+		key = k
+	default:
+		return nil, fmt.Errorf("signing key: unexpected PEM block %q", block.Type)
+	}
+	var chain [][]byte
+	for rest := certPEM; ; {
+		var b *pem.Block
+		b, rest = pem.Decode(rest)
+		if b == nil {
+			break
+		}
+		if b.Type != "CERTIFICATE" {
+			continue
+		}
+		if _, err := x509.ParseCertificate(b.Bytes); err != nil {
+			return nil, fmt.Errorf("signing certificate: %w", err)
+		}
+		chain = append(chain, b.Bytes)
+	}
+	if len(chain) == 0 {
+		return nil, errors.New("signing certificate: no certificate")
+	}
+	leaf, _ := x509.ParseCertificate(chain[0])
+	if pub, ok := leaf.PublicKey.(*rsa.PublicKey); !ok || !pub.Equal(&key.PublicKey) {
+		return nil, errors.New("signing certificate: the first certificate does not match the key")
+	}
+	return &Signer{key: key, chain: chain}, nil
+}
+
+const dsigNS = "http://www.w3.org/2000/09/xmldsig#"
+
+// Sign returns doc with an enveloped XML-DSig signature as the last child of the root, in the
+// form of Microsoft's CarrierProvisioning samples: Reference URI="" with only the
+// enveloped-signature transform, inclusive C14N 1.0, RSA-SHA1, SHA-1 digest, and every
+// certificate of the chain in KeyInfo/X509Data. doc must already be in canonical form
+// (windowsProfile writes it that way), so its bytes are the digest input.
+func (s *Signer) Sign(doc string) ([]byte, error) {
+	const end = "</CarrierProvisioning>"
+	if !strings.HasSuffix(doc, end) {
+		return nil, errors.New("signing: not a CarrierProvisioning document")
+	}
+	digest := sha1.Sum([]byte(doc))
+	signedInfo := `<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"></CanonicalizationMethod>` +
+		`<SignatureMethod Algorithm="` + dsigNS + `rsa-sha1"></SignatureMethod>` +
+		`<Reference URI=""><Transforms><Transform Algorithm="` + dsigNS + `enveloped-signature"></Transform></Transforms>` +
+		`<DigestMethod Algorithm="` + dsigNS + `sha1"></DigestMethod>` +
+		`<DigestValue>` + base64.StdEncoding.EncodeToString(digest[:]) + `</DigestValue></Reference>` +
+		`</SignedInfo>`
+	// Canonical SignedInfo carries the namespace it inherits from Signature.
+	hashed := sha1.Sum([]byte(`<SignedInfo xmlns="` + dsigNS + `">` + signedInfo))
+	value, err := rsa.SignPKCS1v15(rand.Reader, s.key, crypto.SHA1, hashed[:])
+	if err != nil {
+		return nil, fmt.Errorf("signing: %w", err)
+	}
+	var certs strings.Builder
+	for _, c := range s.chain {
+		certs.WriteString("<X509Certificate>" + base64.StdEncoding.EncodeToString(c) + "</X509Certificate>")
+	}
+	signature := `<Signature xmlns="` + dsigNS + `"><SignedInfo>` + signedInfo +
+		`<SignatureValue>` + base64.StdEncoding.EncodeToString(value) + `</SignatureValue>` +
+		`<KeyInfo><X509Data>` + certs.String() + `</X509Data></KeyInfo></Signature>`
+	return []byte(strings.TrimSuffix(doc, end) + signature + end), nil
+}

wlan-setup/store.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	"sync"
+	"time"
+)
+
+// profileTTL is how long a signed Windows profile waits for Windows Settings to fetch it.
+const profileTTL = 5 * time.Minute
+
+// maxProfiles bounds the profiles held at once.
+const maxProfiles = 1000
+
+type storedProfile struct {
+	body    []byte
+	expires time.Time
+}
+
+// ProfileStore keeps signed Windows profiles in memory, each fetchable once until it expires.
+type ProfileStore struct {
+	mu       sync.Mutex
+	now      func() time.Time
+	profiles map[string]storedProfile
+}
+
+func newProfileStore(now func() time.Time) *ProfileStore {
+	return &ProfileStore{now: now, profiles: map[string]storedProfile{}}
+}
+
+func (s *ProfileStore) purge(now time.Time) {
+	for k, p := range s.profiles {
+		if !now.Before(p.expires) {
+			delete(s.profiles, k)
+		}
+	}
+}
+
+// Put stores body under token; false when the store is full.
+func (s *ProfileStore) Put(token string, body []byte) bool {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	now := s.now()
+	s.purge(now)
+	if len(s.profiles) >= maxProfiles {
+		return false
+	}
+	s.profiles[token] = storedProfile{body: body, expires: now.Add(profileTTL)}
+	return true
+}
+
+// Take returns the profile stored under token and deletes it.
+func (s *ProfileStore) Take(token string) ([]byte, bool) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.purge(s.now())
+	p, ok := s.profiles[token]
+	if ok {
+		delete(s.profiles, token)
+	}
+	return p.body, ok
+}
+
+// Has reports whether a profile is stored under token, without taking it.
+func (s *ProfileStore) Has(token string) bool {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.purge(s.now())
+	_, ok := s.profiles[token]
+	return ok
+}