Nginx

nginx is a reverse proxy supported by Authelia.

Configuration

We will be working with these files.

/etc/nginx/authelia.conf
/etc/nginx/authelia_auth.conf
/etc/nginx/authelia_proxy.conf

Warning: The default configuration below uses the baseurl of /login but this can be changed according to the notes of each conf.

authelia.conf /etc/nginx/authelia.conf

Note: baseurl specific lines for the /etc/nginx/authelia.conf

set $auth_type "/login/api/verify"; # normal auth - This is the default - uncomment the auth type of chocie.
# set $auth_type "/login/api/verify?auth=basic"; # basic auth - uncomment the auth type of chocie.
location /login {
location /login/api/verify {

Create this file /etc/nginx/authelia.conf and populate with this:

set $upstream_authelia http://127.0.0.1:9091; # set the reused upstream proxypass url
set $auth_type "/login/api/verify"; # normal auth
# set $auth_type "/login/api/verify?auth=basic"; # basic auth

location /login {
    proxy_pass $upstream_authelia;
    include /etc/nginx/authelia_proxy.conf;
}

# Virtual endpoint created by nginx to forward auth requests.
location /login/api/verify {
    internal;
    proxy_pass_request_body off;
    proxy_pass $upstream_authelia$auth_type;
    proxy_set_header Content-Length "";
    # [REQUIRED] Needed by Authelia to check authorizations of the resource.
    # Provide either X-Original-URL and X-Forwarded-Proto or
    # X-Forwarded-Proto, X-Forwarded-Host and X-Forwarded-Uri or both.
    # Those headers will be used by Authelia to deduce the target url of the user.
    #
    # Basic Proxy Config
    proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
    proxy_set_header X-Forwarded-Method $request_method;
    proxy_set_header X-Forwarded-For $remote_addr;
    include /etc/nginx/authelia_proxy.conf;
}

authelia_auth.conf /etc/nginx/authelia_auth.conf

Note: baseurl specific lines for the /etc/nginx/authelia_auth.conf

auth_request /login/api/verify;
error_page 401 =302 https://$http_host/login/?rd=$target_url;

Create this file /etc/nginx/authelia_auth.conf and populate with this:

# Basic Authelia Config
# Send a subsequent request to Authelia to verify if the user is authenticated
# and has the right permissions to access the resource.
auth_request /login/api/verify;
# Set the $(target_url) variable based on the request. It will be used to build the portal
# URL with the correct redirection parameter.
auth_request_set $target_url $scheme://$http_host$request_uri;
# Set the X-Forwarded-User and X-Forwarded-Groups with the headers
# returned by Authelia for the backends which can consume them.
# This is not safe, as the backend must make sure that they come from the
# proxy. In the future, it's gonna be safe to just use OAuth.
auth_request_set $user $upstream_http_remote_user;
auth_request_set $groups $upstream_http_remote_groups;
auth_request_set $name $upstream_http_remote_name;
auth_request_set $email $upstream_http_remote_email;
proxy_set_header Remote-User $user;
proxy_set_header Remote-Groups $groups;
proxy_set_header Remote-Name $name;
proxy_set_header Remote-Email $email;
# If Authelia returns 401, then nginx redirects the user to the login portal.
# If it returns 200, then the request pass through to the backend.
# For other type of errors, nginx will handle them as usual.
error_page 401 =302 https://$http_host/login/?rd=$target_url;

authelia_proxy.conf /etc/nginx/authelia_proxy.conf

Note: There no baseurl specific lines for the /etc/nginx/authelia_proxy.conf

Create this file /etc/nginx/authelia_proxy.conf and populate with this:

client_body_buffer_size 128k;
#Timeout if the real server is dead
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503;
# Advanced Proxy Config
send_timeout 5m;
proxy_read_timeout 360;
proxy_send_timeout 360;
proxy_connect_timeout 360;
# Basic Proxy Config
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Host $http_host;
proxy_set_header X-Forwarded-Uri $request_uri;
proxy_set_header X-Forwarded-Ssl on;
proxy_redirect  http://  $scheme://;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_cache_bypass $cookie_session;
proxy_no_cache $cookie_session;
proxy_buffers 64 256k;
# If behind reverse proxy, forwards the correct IP
set_real_ip_from 10.0.0.0/8;
set_real_ip_from 172.16.0.0/12;
set_real_ip_from 192.168.0.0/16;
set_real_ip_from fc00::/7;
real_ip_header X-Forwarded-For;
real_ip_recursive on;

Protected Endpoint

location / {
    set $upstream_nextcloud https://nextcloud;
    proxy_pass $upstream_nextcloud;
    include /etc/nginx/authelia_auth.conf; # Activates Authelia for specified route/location, please ensure you have setup the domain in your configuration.yml
}

userdocs/authelia_nginx.md