ingress-nginx-helm/charts/ingress-nginx/templates/default-backend-networkpolicy.yaml

{{- if and .Values.defaultBackend.enabled .Values.defaultBackend.networkPolicy.enabled }}
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  labels:
    {{- include "ingress-nginx.labels" . | nindent 4 }}
    app.kubernetes.io/component: default-backend
    {{- with .Values.defaultBackend.labels }}
    {{- toYaml . | nindent 4 }}
    {{- end }}
  name: {{ include "ingress-nginx.defaultBackend.fullname" . }}
  namespace: {{ include "ingress-nginx.namespace" . }}
spec:
  podSelector:
    matchLabels:
      {{- include "ingress-nginx.selectorLabels" . | nindent 6 }}
      app.kubernetes.io/component: default-backend
  policyTypes:
    - Ingress
    - Egress
  ingress:
    - ports:
        - protocol: TCP
          port: {{ .Values.defaultBackend.port }}
{{- end }}