How to secure your Kubernetes pods using GitLab Container Network Security

What this post added

This post introduces and details the implementation of Network Policies using Cilium as a GitLab-managed application. It explains how Network Policies act as a firewall for Kubernetes cluster networks, controlling pod communication. The post covers the configuration of ingress and egress traffic using various selectors (podSelector, namespaceSelector, ipBlock) and provides an example YAML for a Network Policy. It also describes the installation process of Cilium as a managed application and highlights the Threat Monitoring dashboard, which visualizes packet flow metrics (inbound/outbound packets, dropped packets) and allows for the creation and editing of Network Policies through an intuitive UI. The post also links to other relevant GitLab security resources.