kube/asterisk/network-policies.yml

---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: asterisk
spec:
  podSelector:
    matchLabels:
      app: asterisk
  policyTypes:
    - Ingress
    - Egress
  ingress:
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: monitoring
          podSelector:
            matchLabels:
              app.kubernetes.io/name: prometheus
    - from:
        - ipBlock:
            cidr: 100.101.0.0/16
    - from:
        - ipBlock:
            cidr: 100.102.0.0/16
    - from:
        - ipBlock:
            cidr: 81.90.125.224/32 # Lauri home
    - from:
        - ipBlock:
            cidr: 172.20.8.241/32 # Erki A
    - from:
        - ipBlock:
            cidr: 212.47.211.10/32 # Elisa SIP       
  egress:
    - to:
        - ipBlock:
            cidr: 212.47.211.10/32  # Elisa SIP