apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: kube-system-baseline
  namespace: kube-system
spec:
  endpointSelector: {}

  ingress:
    - fromEntities:
        - cluster
        - host
        - remote-node

  egress:
    - toEntities:
        - kube-apiserver
        - cluster

    - toEndpoints:
        - matchLabels:
            k8s:k8s-app: kube-dns
      toPorts:
        - ports:
            - port: "53"
              protocol: UDP
            - port: "53"
              protocol: TCP