Traefik

A guide on integrating Authelia with the Traefik reverse proxy.

Traefik is a reverse proxy supported by Authelia.

Important: When using these guides it’s important to recognize that we cannot provide a guide for every possible method of deploying a proxy. These guides show a suggested setup only and you need to understand the proxy configuration and customize it to your needs. To-that-end we include links to the official proxy documentation throughout this documentation and in the See Also section.

Requirements

You need the following to run Authelia with Traefik:

Get Started

It’s strongly recommended that users setting up Authelia for the first time take a look at our Get Started guide. This takes you through various steps which are essential to bootstrapping Authelia.

Trusted Proxies

Important: You should read the Forwarded Headers section and this section as part of any proxy configuration. Especially if you have never read it before.

Important: The included example is NOT meant for production use. It’s used expressly as an example to showcase how you can configure multiple IP ranges. You should customize this example to fit your specific architecture and needs. You should only include the specific IP address ranges of the trusted proxies within your architecture and should not trust entire subnets unless that subnet only has trusted proxies and no other services.

Traefik by default doesn’t trust any other proxies requiring explicit configuration of which proxies are trusted and removes potentially fabricated headers that are likely to lead to security issues, and it is difficult to configure this incorrectly. This is an important security feature that is common with proxies with good security practices.

In the example we have four commented lines which configure trustedIPs which show an example on adding the following networks to the trusted proxy list in Traefik:

  • 10.0.0.0/8
  • 172.16.0.0/16
  • 192.168.0.0/16
  • fc00::/7

See the Entry Points documentation for more information.

Configuration

Below you will find commented examples of the following docker deployment:

  • Traefik
  • Authelia portal
  • Protected endpoint (Nextcloud)
  • Protected endpoint with Authorization header for basic authentication (Heimdall)

The below configuration looks to provide examples of running Traefik 2.x with labels to protect your endpoint (Nextcloud in this case).

Please ensure that you also setup the respective ACME configuration for your Traefik setup as this is not covered in the example below.

Docker Compose

This is an example configuration using docker compose labels:

docker-compose.yml
---
version: "3.8"
networks:
  net:
    driver: bridge
services:
  traefik:
    container_name: traefik
    image: traefik:v2.6
    restart: unless-stopped
    command:
      - '--api=true'
      - '--api.dashboard=true'
      - '--api.insecure=false'
      - '--pilot.dashboard=false'
      - '--global.sendAnonymousUsage=false'
      - '--global.checkNewVersion=false'
      - '--log=true'
      - '--log.level=DEBUG'
      - '--log.filepath=/config/traefik.log'
      - '--providers.docker=true'
      - '--providers.docker.exposedByDefault=false'
      - '--entryPoints.http=true'
      - '--entryPoints.http.address=:8080/tcp'
      - '--entryPoints.http.http.redirections.entryPoint.to=https'
      - '--entryPoints.http.http.redirections.entryPoint.scheme=https'
      ## Please see the Forwarded Header Trust section of the Authelia Traefik Integration documentation.
      # - '--entryPoints.http.forwardedHeaders.trustedIPs=10.0.0.0/8,172.16.0.0/16,192.168.0.0/16,fc00::/7'
      # - '--entryPoints.http.proxyProtocol.trustedIPs=10.0.0.0/8,172.16.0.0/16,192.168.0.0/16,fc00::/7'
      - '--entryPoints.http.forwardedHeaders.insecure=false'
      - '--entryPoints.http.proxyProtocol.insecure=false'
      - '--entryPoints.https=true'
      - '--entryPoints.https.address=:8443/tcp'
      ## Please see the Forwarded Header Trust section of the Authelia Traefik Integration documentation.
      # - '--entryPoints.https.forwardedHeaders.trustedIPs=10.0.0.0/8,172.16.0.0/16,192.168.0.0/16,fc00::/7'
      # - '--entryPoints.https.proxyProtocol.trustedIPs=10.0.0.0/8,172.16.0.0/16,192.168.0.0/16,fc00::/7'
      - '--entryPoints.https.forwardedHeaders.insecure=false'
      - '--entryPoints.https.proxyProtocol.insecure=false'
    networks:
      net: {}
    ports:
      - "80:8080"
      - "443:8443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ${PWD}/data/traefik:/config
    labels:
      - 'traefik.enable=true'
      - 'traefik.http.routers.api.rule=Host(`traefik.example.com`)'
      - 'traefik.http.routers.api.entryPoints=https'
      - 'traefik.http.routers.api.tls=true'
      - 'traefik.http.routers.api.service=api@internal'
      - 'traefik.http.routers.api.middlewares=authelia@docker'
  authelia:
    container_name: authelia
    image: authelia/authelia
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 9091
    volumes:
      - ${PWD}/data/authelia/config:/config
    environment:
      TZ: "Australia/Melbourne"
    labels:
      - 'traefik.enable=true'
      - 'traefik.http.routers.authelia.rule=Host(`auth.example.com`)'
      - 'traefik.http.routers.authelia.entryPoints=https'
      - 'traefik.http.routers.authelia.tls=true'
      - 'traefik.http.middlewares.authelia.forwardAuth.address=http://authelia:9091/api/verify?rd=https%3A%2F%2Fauth.example.com%2F'
      - 'traefik.http.middlewares.authelia.forwardAuth.trustForwardHeader=true'
      - 'traefik.http.middlewares.authelia.forwardAuth.authResponseHeaders=Remote-User,Remote-Groups,Remote-Name,Remote-Email'
      - 'traefik.http.middlewares.authelia-basic.forwardAuth.address=http://authelia:9091/api/verify?auth=basic'
      - 'traefik.http.middlewares.authelia-basic.forwardAuth.trustForwardHeader=true'
      - 'traefik.http.middlewares.authelia-basic.forwardAuth.authResponseHeaders=Remote-User,Remote-Groups,Remote-Name,Remote-Email'
  nextcloud:
    container_name: nextcloud
    image: linuxserver/nextcloud
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 443
    volumes:
      - ${PWD}/data/nextcloud/config:/config
      - ${PWD}/data/nextcloud/data:/data
    environment:
      PUID: "1000"
      PGID: "1000"
      TZ: "Australia/Melbourne"
    labels:
      - 'traefik.enable=true'
      - 'traefik.http.routers.nextcloud.rule=Host(`nextcloud.example.com`)'
      - 'traefik.http.routers.nextcloud.entryPoints=https'
      - 'traefik.http.routers.nextcloud.tls=true'
      - 'traefik.http.routers.nextcloud.middlewares=authelia@docker'
  heimdall:
    container_name: heimdall
    image: linuxserver/heimdall
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 443
    volumes:
      - ${PWD}/data/heimdall/config:/config
    environment:
      PUID: "1000"
      PGID: "1000"
      TZ: "Australia/Melbourne"
    labels:
      - 'traefik.enable=true'
      - 'traefik.http.routers.heimdall.rule=Host(`heimdall.example.com`)'
      - 'traefik.http.routers.heimdall.entryPoints=https'
      - 'traefik.http.routers.heimdall.tls=true'
      - 'traefik.http.routers.heimdall.middlewares=authelia-basic@docker'
...

YAML

This example uses a docker-compose.yml similar to the one above however it has two major differences:

  1. A majority of the configuration is in YAML instead of the labels section of the docker-compose.yml file.
  2. It connects to Authelia over TLS with client certificates which ensures that Traefik is a proxy authorized to communicate with Authelia. This expects that the Server TLS section is configured correctly.
    • The client certificates can easily be disabled by commenting the cert and key options in the http.middlewares section for the forwardAuth middlewares and the certificates in the http.serversTransports section.
    • The TLS communication can be disabled by commenting the entire tls section in the http.middlewares section for all forwardAuth middlewares, adjusting the authelia router in the http.routers section to use the authelia-net@docker service, and commenting the authelia service in the http.service section.
docker-compose.yml
---
version: "3.8"
networks:
  net:
    driver: bridge
services:
  traefik:
    container_name: traefik
    image: traefik:v2.6
    restart: unless-stopped
    command:
      - '--api=true'
      - '--api.dashboard=true'
      - '--api.insecure=false'
      - '--pilot.dashboard=false'
      - '--global.sendAnonymousUsage=false'
      - '--global.checkNewVersion=false'
      - '--log=true'
      - '--log.level=DEBUG'
      - '--log.filepath=/config/traefik.log'
      - '--providers.docker=true'
      - '--providers.docker.exposedByDefault=false'
      - '--providers.file=true'
      - '--providers.file.watch=true'
      - '--providers.file.directory=/config/dynamic'
      - '--entryPoints.http=true'
      - '--entryPoints.http.address=:8080/tcp'
      - '--entryPoints.http.http.redirections.entryPoint.to=https'
      - '--entryPoints.http.http.redirections.entryPoint.scheme=https'
      - '--entryPoints.https=true'
      - '--entryPoints.https.address=:8443/tcp'
    networks:
      net: {}
    ports:
      - "80:8080"
      - "443:8443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ${PWD}/data/traefik/config:/config
      - ${PWD}/data/traefik/certificates:/certificates
    labels:
      - 'traefik.enable=true'
  authelia:
    container_name: authelia
    image: authelia/authelia
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 9091
    volumes:
      - ${PWD}/data/authelia/config:/config
      - ${PWD}/data/authelia/certificates:/certificates
    environment:
      TZ: "Australia/Melbourne"
    labels:
      - 'traefik.enable=true'
  nextcloud:
    container_name: nextcloud
    image: linuxserver/nextcloud
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 443
    volumes:
      - ${PWD}/data/nextcloud/config:/config
      - ${PWD}/data/nextcloud/data:/data
    environment:
      PUID: "1000"
      PGID: "1000"
      TZ: "Australia/Melbourne"
    labels:
      - 'traefik.enable=true'
  heimdall:
    container_name: heimdall
    image: linuxserver/heimdall
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 443
    volumes:
      - ${PWD}/data/heimdall/config:/config
    environment:
      PUID: "1000"
      PGID: "1000"
      TZ: "Australia/Melbourne"
    labels:
      - 'traefik.enable=true'
  whoami:
    container_name: whoami
    image: traefik/whoami:latest
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 80
    environment:
      TZ: "Australia/Melbourne"
    labels:
      - "traefik.enable=true"
...

This file is part of the dynamic configuration and should have the path ${PWD}/data/traefik/config/dynamic/traefik.yml. Please see the Traefik service and the volume that mounts the ${PWD}/data/traefik/config in the docker compose above.

traefik.yml
---
entryPoints:
  web:
    proxyProtocol:
      insecure: false
      trustedIPs: []
    forwardedHeaders:
      insecure: false
      trustedIPs: []
  websecure:
    proxyProtocol:
      insecure: false
      trustedIPs: []
    forwardedHeaders:
      insecure: false
      trustedIPs: []
tls:
  options:
    modern:
      minVersion: "VersionTLS13"
    intermediate:
      minVersion: "VersionTLS12"
      cipherSuites:
        - "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256"
        - "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256"
        - "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384"
        - "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384"
        - "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305"
        - "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305"
http:
  middlewares:
    authelia:
      forwardAuth:
        address: https://authelia:9091/api/verify?rd=https%3A%2F%2Fauth.example.com%2F
        trustForwardHeader: true
        authResponseHeaders:
          - "Remote-User"
          - "Remote-Groups"
          - "Remote-Email"
          - "Remote-Name"
        tls:
          ca: /certificates/ca.public.crt
          cert: /certificates/traefik.public.crt
          key: /certificates/traefik.private.pem
    authelia-basic:
      forwardAuth:
        address: https://authelia:9091/api/verify?auth=basic
        trustForwardHeader: true
        authResponseHeaders:
          - "Remote-User"
          - "Remote-Groups"
          - "Remote-Email"
          - "Remote-Name"
        tls:
          ca: /certificates/ca.public.crt
          cert: /certificates/traefik.public.crt
          key: /certificates/traefik.private.pem
  routers:
    traefik:
      rule: Host(`traefik.example.com`)
      entryPoints: websecure
      service: api@internal
      middlewares:
        - authelia@file
      tls:
        options: modern@file
        certResolver: default
        domains:
          - main: "example.com"
            sans:
              - "*.example.com"
    whoami:
      rule: Host(`whoami.example.com`)
      entryPoints: websecure
      service: whoami-net@docker
      middlewares:
        - authelia@file
      tls:
        options: modern@file
        certResolver: default
        domains:
          - main: "example.com"
            sans:
              - "*.example.com"
    nextcloud:
      rule: Host(`nextcloud.example.com`)
      entryPoints: websecure
      service: nextcloud-net@docker
      middlewares:
        - authelia@file
      tls:
        options: modern@file
        certResolver: default
        domains:
          - main: "example.com"
            sans:
              - "*.example.com"
    heimdall:
      rule: Host(`heimdall.example.com`)
      entryPoints: websecure
      service: heimdall-net@docker
      middlewares:
        - authelia-basic@file
      tls:
        options: modern@file
        certResolver: default
        domains:
          - main: "example.com"
            sans:
              - "*.example.com"
    authelia:
      rule: Host(`auth.example.com`)
      entryPoints: websecure
      service: authelia@file
      tls:
        options: modern@file
        certResolver: default
        domains:
          - main: "example.com"
            sans:
              - "*.example.com"
  services:
    authelia:
      loadBalancer:
        servers:
          - url: https://authelia:9091/
        serversTransport: autheliaMutualTLS
  serversTransports:
    autheliaMutualTLS:
      certificates:
        - certFile: /certificates/traefik.public.crt
          keyFile: /certificates/traefik.private.pem
      rootCAs:
        - /certificates/ca.public.crt
...

FAQ

Basic Authentication

Authelia provides the means to be able to authenticate your first factor via the Proxy-Authorization header, this is compatible with Traefik.

If you have a use-case which requires the use of the Authorization header/basic authentication login prompt you can call Authelia’s /api/verify?auth=basic endpoint to force a switch to the Authorization header.

Middleware authelia@docker not found

If Traefik and Authelia are defined in different docker compose stacks you may experience an issue where Traefik complains that: middleware authelia@docker not found.

This can be avoided a couple different ways:

  1. Ensure Authelia container is up before Traefik is started:
  2. Define the Authelia middleware on your Traefik container. See the below example.
- 'traefik.http.middlewares.authelia.forwardAuth.address=http://authelia:9091/api/verify?rd=https%3A%2F%2Fauth.example.com%2F'
- 'traefik.http.middlewares.authelia.forwardAuth.trustForwardHeader=true'
- 'traefik.http.middlewares.authelia.forwardAuth.authResponseHeaders=Remote-User,Remote-Groups,Remote-Name,Remote-Email'

See Also