Individual skill
implementing-network-policies-for-kubernetes
Writes portable upstream Kubernetes NetworkPolicy YAML - default-deny-all, DNS egress, namespace and pod selector rules - that works on any conformant CNI such as Calico or Cilium. Use when segmentation must stay CNI-portable, introducing a default-deny posture, or restricting east-west traffic between pods and namespaces without depending on a vendor CRD. Keywords: NetworkPolicy, default deny, podSelector, namespaceSelector, ingress, egress, CNI portable. Do not use for Calico-specific resources - use implementing-kubernetes-network-policy-with-calico.
skills/implementing-network-policies-for-kubernetes/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
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- Last checked
- Nov 9, 2026
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- 35,887
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
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- containers Declared skill tag
- kubernetes Declared skill tag
- security Declared skill tag
- network-policies Declared skill tag
- microsegmentation Declared skill tag
- devops Derived category
- security Derived category
- devops-containers Derived category
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LICENSEasset · 11,255 bytesSKILL.mdcore · 6,027 bytesSKILL.mdcore · 6,027 bytesassets/template.mddoc · 533 bytesreferences/api-reference.mddoc · 1,426 bytesreferences/standards.mddoc · 735 bytesreferences/workflows.mddoc · 828 bytesscripts/agent.pyruns · 6,378 bytesscripts/process.pyruns · 3,960 bytes
Read excerpt
# Implementing Network Policies for Kubernetes
## Overview
Kubernetes NetworkPolicies provide pod-level network segmentation by defining ingress and egress rules that control traffic flow between pods, namespaces, and external endpoints. Combined with CNI plugins like Calico or Cilium, network policies enforce zero-trust microsegmentation to prevent lateral movement within the cluster.
## When to Use
- When deploying or configuring implementing network policies for kubernetes capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation
## Prerequisites