# Allow all pods to reach CoreDNS for name resolution
# Uses enableDefaultDeny: false to avoid blocking non-DNS egress traffic
# Istio AuthorizationPolicies handle zero-trust enforcement at L7
apiVersion: cilium.io/v2
kind: CiliumClusterwideNetworkPolicy
metadata:
  name: allow-dns
spec:
  endpointSelector: {}
  enableDefaultDeny:
    egress: false
    ingress: false
  egress:
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: kube-system
            k8s-app: kube-dns
      toPorts:
        - ports:
            - port: "53"
              protocol: UDP
            - port: "53"
              protocol: TCP