Anthropic-Cybersecurity-Skills/skills/implementing-kubernetes-network-policy-with-calico/references/standards.md

Standards and References - Kubernetes Network Policy with Calico

Industry Standards

NIST SP 800-190: Application Container Security Guide

• Section 4.4: Container Networking - Isolate container network traffic using network policies
• Section 5.3: Network Security - Implement micro-segmentation between containers
• Recommends default-deny policies with explicit allowlisting

CIS Kubernetes Benchmark v1.8

• 5.3.1: Ensure that the CNI in use supports Network Policies
• 5.3.2: Ensure that all Namespaces have Network Policies defined
• 5.3.3: Ensure that the default namespace does not contain any pods

NIST SP 800-53 Rev 5

• SC-7: Boundary Protection - Implement network segmentation controls
• AC-4: Information Flow Enforcement - Control network traffic between pods
• SC-7(5): Deny by Default / Allow by Exception

NSA/CISA Kubernetes Hardening Guide v1.2

• Section 3: Network Separation and Hardening
  • Use network policies to isolate workloads
  • Implement default deny ingress and egress policies
  • Limit pod-to-pod communication to minimum required

Calico Documentation References

Resource	URL
Calico NetworkPolicy	https://docs.tigera.io/calico/latest/network-policy/get-started/calico-policy/calico-network-policy
Kubernetes Policy Tutorial	https://docs.tigera.io/calico/latest/network-policy/get-started/kubernetes-policy/kubernetes-policy-basic
GlobalNetworkPolicy	https://docs.tigera.io/calico/latest/reference/resources/globalnetworkpolicy
Policy Tiers	https://docs.tigera.io/calico-enterprise/latest/network-policy/policy-tiers/tiered-policy
Calico eBPF Dataplane	https://docs.tigera.io/calico/latest/operations/ebpf/enabling-ebpf

Zero Trust Network Model

Principles Applied

1. Never trust, always verify - Default deny all traffic between pods
2. Least privilege access - Only allow specific required communication paths
3. Micro-segmentation - Isolate workloads at pod-to-pod granularity
4. Identity-based policies - Use service accounts and labels for policy selection
5. Continuous monitoring - Log and alert on denied traffic patterns

Compliance Mappings

PCI DSS v4.0

• Requirement 1.2.1: Restrict inbound and outbound traffic to that which is necessary
• Requirement 1.3.1: Inbound traffic is restricted to that which is necessary
• Requirement 1.3.2: Outbound traffic is restricted to that which is necessary

SOC 2 Type II

• CC6.1: Logical access security - Network isolation between components
• CC6.6: Network boundaries - Restrict access at network boundaries

HIPAA

• 164.312(e)(1): Transmission Security - Protect data in transit between services