title: Kubernetes Ingress - Automatically validating Certificates issued by Intermedia Certificate
body: <p>I'm currently setting up my Ingress in Kubernetes.
  We do have the requirement to enable SSL/TLS and validate the certificates.
  For this, we have a root ca, which issues a certificate the intermedia ca. The intermedia ca issues again certificates for all our clients. The client certificates do have the subject name &quot;Device&quot;.</p>
  <p>The intermedia ca certificate is stored in a kubernetes secret. Now I would like to configure ingress to automatically validate all incoming requests from clients and check that their certificate was indeed issued by our intermedia ca. In addition, I was wondering if it would be possible to validate the subject name of the client certificate.</p>
  <p>Do you guys know if that is possible, or do I need to add this logic to my application?</p>
  <p>I was somehow not able to find any information on that.
  Hence, it would be great if you could help me out here.</p>