Authenticate with Google

Authenticate with Google#

This example uses Docker Compose to add Google authentication to an application exposed via Traefik.

In this example, your OAuth2 application should be configured to redirect users to https://auth.example.com/portals/main/oauth2/callback.

# docker-compose.yaml
version: '3'

services:
  traefik:
    image: traefik:v3
    command:
      - "--providers.docker=true"
      - "--entrypoints.websecure.address=:443"
    ports:
      - "443:443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock

  traefik-forward-auth:
    image: ghcr.io/italypaleale/traefik-forward-auth:4
    secrets:
      # Load the configuration from the secret
      - source: "tfa_config"
        target: "/etc/traefik-forward-auth/config.yaml"
    labels:
      - "traefik.http.middlewares.traefik-forward-auth.forwardauth.address=http://traefik-forward-auth:4181/portals/main"
      - "traefik.http.middlewares.traefik-forward-auth.forwardauth.authResponseHeaders=X-Forwarded-User,X-Forwarded-Displayname,X-Authenticated-User"
      - "traefik.http.middlewares.traefik-forward-auth.forwardauth.trustForwardHeader=true"
      - "traefik.http.services.traefik-forward-auth.loadbalancer.server.port=4181"
      - "traefik.http.routers.traefik-forward-auth.rule=Host(`auth.example.com`)"
      - "traefik.http.routers.traefik-forward-auth.entrypoints=websecure"
      - "traefik.http.routers.traefik-forward-auth.tls=true"

  whoami:
    image: ghcr.io/traefik/whoami:latest
    environment:
      - WHOAMI_PORT_NUMBER=4545
    labels:
      - "traefik.http.routers.whoami.rule=Host(`whoami.example.com`)"
      - "traefik.http.routers.whoami.middlewares=traefik-forward-auth"
      - "traefik.http.services.whoami.loadbalancer.server.port=4545"
      - "traefik.http.routers.whoami.entrypoints=websecure"
      - "traefik.http.routers.whoami.tls=true"

secrets:
   tfa_config:
     file: tfa-config.yaml

The configuration file for Traefik Forward Auth tfa-config.yaml is:

# tfa-config.yaml
server:
  # Domain(s) served by Traefik Forward Auth
  # `domain` is the cookie domain (the domain where the app is reachable, or a parent domain)
  # `authHost` is the public hostname of Traefik Forward Auth itself (omit it when using "sub-path" mode)
  domains:
    - domain: "example.com"
      authHost: "auth.example.com"

portals:
  - name: "main"
    providers:
      - # Configure authentication with Google
        google:
          clientID: "your-client-id"
          clientSecret: "your-client-secret"

Authenticate with Tailscale

Authenticate with Tailscale#

This example uses Docker Compose to expose an application via Traefik. Users who access the Traefik endpoint through Tailscale are automatically authenticated. This example assumes Tailscale is running on the container host, not inside a container.

# docker-compose.yaml
version: '3'

services:
  traefik:
    image: traefik:v3
    command:
      - "--providers.docker=true"
      - "--entrypoints.websecure.address=:443"
    ports:
      - "443:443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock

  traefik-forward-auth:
    image: ghcr.io/italypaleale/traefik-forward-auth:4
    volumes:
      # Note the Tailscale socket must be mounted in the container
      - /var/run/tailscale/:/var/run/tailscale
    secrets:
      # Load the configuration from the secret
      - source: "tfa_config"
        target: "/etc/traefik-forward-auth/config.yaml"
    labels:
      - "traefik.http.middlewares.traefik-forward-auth.forwardauth.address=http://traefik-forward-auth:4181/portals/main"
      - "traefik.http.middlewares.traefik-forward-auth.forwardauth.authResponseHeaders=X-Forwarded-User,X-Forwarded-Displayname,X-Authenticated-User"
      - "traefik.http.middlewares.traefik-forward-auth.forwardauth.trustForwardHeader=true"
      - "traefik.http.routers.traefik-forward-auth.rule=Host(`auth.example.com`)"
      - "traefik.http.routers.traefik-forward-auth.entrypoints=websecure"
      - "traefik.http.routers.traefik-forward-auth.tls=true"
      - "traefik.http.services.traefik-forward-auth.loadbalancer.server.port=4181"

  whoami:
    image: ghcr.io/traefik/whoami:latest
    environment:
      - WHOAMI_PORT_NUMBER=4545
    labels:
      - "traefik.http.routers.whoami.rule=Host(`whoami.example.com`)"
      - "traefik.http.routers.whoami.middlewares=traefik-forward-auth"
      - "traefik.http.routers.whoami.entrypoints=websecure"
      - "traefik.http.routers.whoami.tls=true"
      - "traefik.http.services.whoami.loadbalancer.server.port=4545"

secrets:
   tfa_config:
     file: tfa-config.yaml

The configuration file for Traefik Forward Auth tfa-config.yaml is:

# tfa-config.yaml
server:
  # Domain(s) served by Traefik Forward Auth
  # `domain` is the cookie domain (the domain where the app is reachable, or a parent domain)
  # `authHost` is the public hostname of Traefik Forward Auth itself (omit it when using "sub-path" mode)
  domains:
    - domain: "example.com"
      authHost: "auth.example.com"

portals:
  - name: "main"
    providers:
      - # Configure authentication with Tailscale Whois
        tailscaleWhois:
          # Optionally restrict to one Tailnet only
          # allowedTailnet: "yourtailnet.ts.net"