pinkpixel-dev/implementing-container-network-policies-with-calico
SKILLS/implementing-container-network-policies-with-calico/SKILL.md
Enforce Kubernetes network segmentation using Calico CNI network policies and global network policies to control pod-to-pod traffic, restrict egress, and implement zero-trust microsegmentation.
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Security Scan Results
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3
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9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
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VirusTotalMulti-engine malware detection
50%
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CrowdStrikeAdvanced threat intelligence
50%
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OSV-ScannerOpen Source Vulnerability database check
50%
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OWASP Dep-Check
50%
Last scanned: Apr 16, 2026, 1:50 AM4.4s3 files scanned
SKILL.md
- name:
- implementing-container-network-policies-with-calico
- description:
- Enforce Kubernetes network segmentation using Calico CNI network policies and global network policies to control pod-to-pod traffic, restrict egress, and implement zero-trust microsegmentation.
- domain:
- cybersecurity
- subdomain:
- container-security
- tags:
- [container-security, kubernetes, calico, network-policy, microsegmentation, cni]
- version:
- 1.0
- author:
- mahipal
- license:
- Apache-2.0
Implementing Container Network Policies with Calico
Overview
Calico provides Kubernetes-native and extended network policy enforcement through its CNI plugin. This skill covers creating and auditing Calico NetworkPolicy and GlobalNetworkPolicy resources to implement pod-to-pod traffic control, namespace isolation, egress restrictions, and DNS-based policy rules using calicoctl and the Kubernetes API.
When to Use
- When deploying or configuring implementing container network policies with calico 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
- Kubernetes cluster with Calico CNI installed
- Python 3.9+ with
kubernetesclient library - calicoctl CLI tool installed and configured
- kubectl access with RBAC permissions for network policy management
Steps
Step 1: Audit Existing Network Policies
Use calicoctl and kubectl to inventory current network policies and identify unprotected namespaces.
Step 2: Implement Default-Deny Policies
Create default-deny ingress and egress policies per namespace as a zero-trust baseline.
Step 3: Create Workload-Specific Allow Rules
Define granular allow rules for legitimate pod-to-pod and pod-to-service communication.
Step 4: Validate Policy Enforcement
Test connectivity between pods to verify policies are correctly enforced.
Expected Output
JSON audit report listing all network policies, unprotected namespaces, policy rule counts, and connectivity test results.
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