This white paper explores Kubernetes networking fundamentals, including pod-to-pod communication, Services, DNS, and ingress controllers. It explains the Container Network Interface (CNI), overlay vs. underlay networks, and network policies for security. Advanced topics cover service meshes, observability, and troubleshooting with tools like tcpdump and iptables. Clear diagrams and real-world examples help demystify how traffic flows within and outside a cluster, enabling DevOps and platform engineers to optimize performance, scalability, and security in cloud-native environments.

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