Network Policies for Isolation
Control network traffic flow between Pods and namespaces using Kubernetes Network Policies.
Network Policies: Traffic Cops
In Kubernetes, Pods can talk to each other freely by default. This is great for flexibility, but not always ideal for security.
Network Policies act like firewalls for your Pods, controlling which network traffic is allowed in (ingress) and out (egress).
Default: All Pods Can Talk
By default, once a Pod is deployed, it can communicate with any other Pod in the cluster, regardless of namespace. This "flat network" model simplifies setup but lacks isolation.
For production environments, you often need to restrict communication to enhance security and prevent unauthorized access between application components.
All lessons in this course
- Role-Based Access Control (RBAC)
- Network Policies for Isolation
- Pod Security Standards
- Service Accounts and Workload Identity