Which ports are prohibited in Ingress Node Firewall?

Solution Verified - Updated -

Issue

  • When setting port 6443 to IngressNodeFirewall, I got the following error :
Error "Forbidden: port is in conflict with access to Kubernetes API" for field "spec.ingress[0][rules][0]".
  • When setting port 2379 or 2380 to IngressNodeFirewall, I got the following error :
Error "Forbidden: port is in conflict with access to ETCD" for field "spec.ingress[0][rules][0]".
  • Are there any other ports prohibited in IngressNodeFirewall?

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • Ingress Node Firewall Operator

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