Networking

Note: This guide is based on technical research from Linux kernel documentation, networking RFCs, Red Hat and Ubuntu networking guides, and analysis of production networking implementations. The techniques described are technically sound and based on documented Linux networking capabilities. Code examples have been verified against current Linux kernel versions (5.15+). Readers should test configurations in non-production environments before deploying to production systems. Linux networking capabilities extend far beyond basic interface configuration. Modern Linux systems provide powerful network isolation, advanced routing, traffic shaping, and observability tools that form the foundation of container networking, software-defined networking (SDN), and high-performance network infrastructure. ...

Container Networking Deep Dive: From Network Namespaces to Kubernetes Note: This guide is based on the Linux kernel networking documentation, Docker networking documentation (v24+), Kubernetes networking model documentation (v1.28+), and CNI specification v1.0. All examples use documented networking primitives and follow production container networking patterns. Container networking is fundamental to modern cloud-native applications. Understanding how packets flow from pod to pod, how services load-balance traffic, and how network policies enforce security requires knowledge of Linux networking primitives, Container Network Interface (CNI) plugins, and Kubernetes networking abstractions. ...