---
# Longhorn UI only accepts browser traffic through oauth2-proxy.
apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: longhorn-ui-auth-proxy-ingress
  namespace: longhorn
spec:
  endpointSelector:
    matchLabels:
      app: longhorn-ui
  ingress:
    - fromEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: longhorn
            app.kubernetes.io/name: oauth2-proxy
            app.kubernetes.io/instance: longhorn
      toPorts:
        - ports:
            - port: "8000"
              protocol: TCP
---
# longhorn-oauth2-proxy: Gateway ingress, upstream Longhorn UI, Zitadel OIDC.
apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: longhorn-oauth2-proxy
  namespace: longhorn
spec:
  endpointSelector:
    matchLabels:
      app.kubernetes.io/name: oauth2-proxy
      app.kubernetes.io/instance: longhorn
  ingress:
    # Kubelet probes, local port-forwarding, and same-node Gateway backend flows.
    - fromEntities:
        - host
      toPorts:
        - ports:
            - port: "4180"
              protocol: TCP
    # Gateway I Envoy proxy: outbound connections use reserved:ingress identity.
    - fromEntities:
        - ingress
      toPorts:
        - ports:
            - port: "4180"
              protocol: TCP
    - fromEndpoints:
        - matchLabels:
            gateway.networking.k8s.io/gateway-name: gateway-internal
            k8s:io.kubernetes.pod.namespace: kube-system
      toPorts:
        - ports:
            - port: "4180"
              protocol: TCP
  egress:
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: longhorn
            app: longhorn-ui
      toPorts:
        - ports:
            - port: "8000"
              protocol: TCP
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: zitadel
            app.kubernetes.io/name: zitadel-oidc-internal
      toPorts:
        - ports:
            - port: "8080"
              protocol: TCP
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: kube-system
            k8s-app: kube-dns
      toPorts:
        - ports:
            - port: "53"
              protocol: UDP
            - port: "53"
              protocol: TCP
---
apiVersion: cilium.io/v2
kind: CiliumClusterwideNetworkPolicy
metadata:
  name: gateway-internal-egress-longhorn-oauth2-proxy
spec:
  endpointSelector:
    matchLabels:
      "reserved:ingress": ""
  egress:
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: longhorn
            app.kubernetes.io/name: oauth2-proxy
            app.kubernetes.io/instance: longhorn
      toPorts:
        - ports:
            - port: "4180"
              protocol: TCP
---
apiVersion: cilium.io/v2
kind: CiliumClusterwideNetworkPolicy
metadata:
  name: host-egress-longhorn-oauth2-proxy
spec:
  nodeSelector: {}
  egress:
    - toEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: longhorn
            app.kubernetes.io/name: oauth2-proxy
            app.kubernetes.io/instance: longhorn
      toPorts:
        - ports:
            - port: "4180"
              protocol: TCP
---
# Same-node Gateway backend selections can return to node-local ephemeral
# source ports via the host path.
apiVersion: cilium.io/v2
kind: CiliumClusterwideNetworkPolicy
metadata:
  name: host-ingress-longhorn-oauth2-proxy-replies
spec:
  nodeSelector: {}
  ingress:
    - fromEndpoints:
        - matchLabels:
            k8s:io.kubernetes.pod.namespace: longhorn
            app.kubernetes.io/name: oauth2-proxy
            app.kubernetes.io/instance: longhorn
      toPorts:
        - ports:
            - port: "32768"
              endPort: 60999
              protocol: TCP