For Nginx Proxy Manager you can use this snippet ``` # Increase buffer size for large headers # This is needed only if you get 'upstream sent too big header while reading response # header from upstream' error when trying to access an application protected by goauthentik proxy_buffers 8 16k; proxy_buffer_size 32k; location / { # Put your proxy_pass to your application here proxy_pass $forward_scheme://$server:$port; # authentik-specific config auth_request /outpost.goauthentik.io/auth/nginx; error_page 401 = @goauthentik_proxy_signin; auth_request_set $auth_cookie $upstream_http_set_cookie; add_header Set-Cookie $auth_cookie; # translate headers from the outposts back to the actual upstream auth_request_set $authentik_username $upstream_http_x_authentik_username; auth_request_set $authentik_groups $upstream_http_x_authentik_groups; auth_request_set $authentik_email $upstream_http_x_authentik_email; auth_request_set $authentik_name $upstream_http_x_authentik_name; auth_request_set $authentik_uid $upstream_http_x_authentik_uid; proxy_set_header X-authentik-username $authentik_username; proxy_set_header X-authentik-groups $authentik_groups; proxy_set_header X-authentik-email $authentik_email; proxy_set_header X-authentik-name $authentik_name; proxy_set_header X-authentik-uid $authentik_uid; } # all requests to /outpost.goauthentik.io must be accessible without authentication location /outpost.goauthentik.io { proxy_pass http://outpost.company:9000/outpost.goauthentik.io; # ensure the host of this vserver matches your external URL you've configured # in authentik proxy_set_header Host $host; proxy_set_header X-Original-URL $scheme://$http_host$request_uri; add_header Set-Cookie $auth_cookie; auth_request_set $auth_cookie $upstream_http_set_cookie; # required for POST requests to work proxy_pass_request_body off; proxy_set_header Content-Length ""; } # Special location for when the /auth endpoint returns a 401, # redirect to the /start URL which initiates SSO location @goauthentik_proxy_signin { internal; add_header Set-Cookie $auth_cookie; return 302 /outpost.goauthentik.io/start?rd=$request_uri; # For domain level, use the below error_page to redirect to your authentik server with the full redirect path # return 302 https://authentik.company/outpost.goauthentik.io/start?rd=$scheme://$http_host$request_uri; } ```