12.1 : What Is a NetworkPolicy? (The Kubernetes Firewall)

12.2 : Allow Traffic from Specific Pods (Ingress Rules)**

12.3 : Control Outgoing Traffic (Egress Rules)

12.4 : Default Deny Policies (Namespace Isolation)**

12.5 : Advanced Rules – NamespaceSelector & IP Blocks**

12.6 : Troubleshooting & Best Practices for Network Policies**