<p>Traefik allows to specify a middleware to authenticate each request using <code>forwardAuth</code>, in the documentation it specifies to use an external provider.</p>
<pre class="lang-yaml prettyprint-override"><code># Forward authentication to example.com
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: test-auth
spec:
  forwardAuth:
    address: https://example.com/auth  👈
</code></pre>
<p>I have an auth server running inside my k8 cluster itself which I want to use instead on an external service, is there a way to use <code>forwardAuth</code> to point to internal service?</p>

<p>I used K8 Fully Qualified Domain Name as the address for this to work:</p>
<p><code>service-name.namespace.svc.cluster.local</code>.</p>
