k8s-security-policies

Implement network policies, pod security standards, and RBAC for production-grade Kubernetes security.

• Enforce network isolation with NetworkPolicy
• Apply least-privilege access via RBAC
• Enforce pod security standards at namespace level
• Use admission control for policy enforcement

• Implement defense-in-depth security
• Use default deny network policies
• Enforce non-root, read-only rootfs, and capability drops
• Apply least-privilege RBAC roles
• Enforce mandatory labels and constraints with Gatekeeper
• Restrict pod privileges and network access
• Enable audit logging and compliance scanning

1. 1.Define namespace-level pod security standards
2. 2.Create NetworkPolicy for network segmentation
3. 3.Set up RBAC roles and bindings for least-privilege access
4. 4.Enforce constraints with OPA Gatekeeper or Kyverno
5. 5.Apply mTLS and authorization policies in service mesh
6. 6.Regularly scan and audit cluster security