---
title: "Kubernetes networking and policy"
description: "Introductory Kubernetes networking and network policy training for users new to Calico Open Source, covering services, ingress, egress, eBPF, and more."
product: "Calico Open Source"
version: "3.32 (latest)"
section: "About Calico"
canonical_url: "https://docs.tigera.io/calico/latest/about/kubernetes-training/"
---

# Kubernetes networking and policy

## [📄️About Kubernetes Networking](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-k8s-networking.md)

[Background on the Kubernetes network model, services, DNS, NAT outgoing, and dual-stack networking concepts that underpin Calico Open Source deployments.](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-k8s-networking.md)

## [📄️About networking](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-networking.md)

[Background on networking fundamentals such as OSI layers, IP addressing, subnets, routing, overlays, DNS, and NAT for newcomers to Calico Open Source.](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-networking.md)

## [📄️What is network policy?](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-network-policy.md)

[Background on Kubernetes and Calico Open Source network policy, comparing API capabilities and offering best practices for securing cluster workloads.](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-network-policy.md)

## [📄️Kubernetes ingress](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-kubernetes-ingress.md)

[Background on Kubernetes ingress implementations, load balancing at L5-7, and how ingress controllers interact with network policy in Calico Open Source.](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-kubernetes-ingress.md)

## [📄️Kubernetes egress](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-kubernetes-egress.md)

[Background on Kubernetes egress traffic, including outgoing NAT, restricting outbound connections, and egress gateways for Calico Open Source clusters.](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-kubernetes-egress.md)

## [📄️Kubernetes services](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-kubernetes-services.md)

[Background on Kubernetes service types (ClusterIP, NodePort, LoadBalancer) and how services interact with network policy in Calico Open Source clusters.](https://docs.tigera.io/calico/latest/about/kubernetes-training/about-kubernetes-services.md)