Envoy

A guide on integrating Authelia with the Envoy reverse proxy.

Envoy is 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.

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.

Configuration

Below you will find commented examples of the following configuration:

  • Authelia Portal
  • Protected Endpoint (Nextcloud)

Theoretical Example

Support for Envoy should be possible via Envoy’s external authorization.

docker-compose.yaml
---
version: "3.8"
networks:
  net:
    driver: bridge
services:
  envoy:
    container_name: envoy
    image: envoyproxy/envoy:v1.23.0
    restart: unless-stopped
    networks:
      net: {}
    ports:
      - '80:8080'
      - '443:8443'
    volumes:
      - ${PWD}/data/envoy/envoy.yaml:/etc/envoy/envoy.yaml:ro
      - ${PWD}/data/certificates:/certificates:ro
  authelia:
    container_name: authelia
    image: authelia/authelia
    restart: unless-stopped
    networks:
      net: {}
    expose:
      - 9091
    volumes:
      - ${PWD}/data/authelia/config:/config
    environment:
      TZ: "Australia/Melbourne"
  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"
envoy.yaml
static_resources:
  listeners:
    - name: listener_http
      address:
        socket_address:
          address: 0.0.0.0
          port_value: 8080
      filter_chains:
        - filters:
            - name: envoy.filters.network.http_connection_manager
              typed_config:
                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
                codec_type: auto
                stat_prefix: ingress_http
                route_config:
                  name: local_route
                  virtual_hosts:
                    - name: backend
                      domains: ["*"]
                      routes:
                        - match:
                            prefix: "/"
                          redirect:
                            https_redirect: true
                  http_filters:
                    - name: envoy.filters.http.router
                      typed_config:
                        "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
    - name: listener_https
      address:
        socket_address:
          address: 0.0.0.0
          port_value: 8443
      filter_chains:
        - filters:
            - name: envoy.filters.network.http_connection_manager
              typed_config:
                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
                stat_prefix: ingress_http
                use_remote_address: true
                skip_xff_append: false
                route_config:
                  name: local_route
                  virtual_hosts:
                    - name: whoami_service
                      domains: ["nextcloud.example.com"]
                      routes:
                        - match:
                            prefix: "/"
                          route:
                            cluster: nextcloud
                    - name: authelia_service
                      domains: ["auth.example.com"]
                      typed_per_filter_config:
                        envoy.filters.http.ext_authz:
                          "@type": type.googleapis.com/envoy.extensions.filters.http.ext_authz.v3.ExtAuthzPerRoute
                          disabled: true
                      routes:
                        - match:
                            prefix: "/"
                          route:
                            cluster: authelia
                http_filters:
                  - name: envoy.filters.http.ext_authz
                    typed_config:
                      "@type": type.googleapis.com/envoy.extensions.filters.http.ext_authz.v3.ExtAuthz
                      http_service:
                        path_prefix: '/api/verify/'
                        server_uri:
                          uri: authelia:9091
                          cluster: authelia
                          timeout: 0.25s
                        authorization_request:
                          allowed_headers:
                            patterns:
                              - exact: accept
                              - exact: cookie
                              - exact: proxy-authorization
                          headers_to_add:
                            - key: X-Authelia-URL
                              value: 'https://auth.example.com/'
                            - key: X-Forwarded-Method
                              value: '%REQ(:METHOD)%'
                            - key: X-Forwarded-Proto
                              value: '%REQ(:SCHEME)%'
                            - key: X-Forwarded-Host
                              value: '%REQ(:AUTHORITY)%'
                            - key: X-Forwarded-Uri
                              value: '%REQ(:PATH)%'
                            - key: X-Forwarded-For
                              value: '%DOWNSTREAM_REMOTE_ADDRESS_WITHOUT_PORT%'
                        authorization_response:
                          allowed_upstream_headers:
                            patterns:
                              - exact: authorization
                              - exact: proxy-authorization
                              - prefix: remote-
                              - prefix: authelia-
                          allowed_client_headers:
                            patterns:
                              - exact: set-cookie
                          allowed_client_headers_on_success:
                            patterns:
                              - exact: set-cookie
                      failure_mode_allow: false
                  - name: envoy.filters.http.router
                    typed_config:
                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
  clusters:
    - name: nextcloud
      connect_timeout: 0.25s
      type: LOGICAL_DNS
      dns_lookup_family: V4_ONLY
      lb_policy: ROUND_ROBIN
      load_assignment:
        cluster_name: nextcloud
        endpoints:
          - lb_endpoints:
              - endpoint:
                  address:
                    socket_address:
                      address: nextcloud
                      port_value: 80
    - name: authelia
      connect_timeout: 0.25s
      type: LOGICAL_DNS
      dns_lookup_family: V4_ONLY
      lb_policy: ROUND_ROBIN
      load_assignment:
        cluster_name: authelia
        endpoints:
          - lb_endpoints:
              - endpoint:
                  address:
                    socket_address:
                      address: authelia
                      port_value: 9091

See Also