auth-forward.yml

# The authForward middleware is used to forward certain headers to and from an external authentication service.
# Access is granted if the authentication service responds with a 2xx status code.

services:
  secureService:
    host: private.example.com
    redirect: "http://172.1.2.3:1234"
    middlewares:
      authForward:
        # The address of the authentication server.
        address: "https://auth.example.com"

        # The headers to forward from the original request to the authentication server.
        # If unspecified, all headers will be forwarded.
        requestHeaders: ["Some-Header"]

        # The headers to forward from the authentication server to the service.
        responseHeaders: ["Remote-User", "Remote-Email"]

        # Forward X-Forwarded-* headers to the authentication server.
        xForwarded: true # Default: false.