network policies

policies/external-policy.yaml

@@ -0,0 +1,13 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-all-ingress-nginx-external
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: nginx-external
+  policyTypes:
+    - Ingress
+  ingress:
+    - {}

policies/internal-policy.yaml

@@ -0,0 +1,20 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: restrict-ingress-nginx-internal
+spec:
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/name: nginx-internal
+  policyTypes:
+    - Ingress
+  ingress:
+    - from:
+        - ipBlock:
+            cidr: 192.168.0.0/16
+      ports:
+        - protocol: TCP
+          port: 80
+        - protocol: TCP
+          port: 443

policies/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - external-policy.yaml
+  - internal-policy.yaml