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 kubernetes client library
• calicoctl CLI tool installed and configured
• kubectl access with RBAC permissions for network policy management