Network Policies in Containers
Implement network policies in Kubernetes to control traffic flow between pods, enhancing security and isolation.
What are Network Policies?
In Kubernetes, Network Policies are like firewalls for your pods. They control how groups of pods communicate with each other and with external network endpoints.
Think of them as a security layer that defines which connections are allowed or denied, enhancing isolation and security.
Why Use Network Policies?
Without Network Policies, all pods in a Kubernetes cluster can communicate with each other by default. This can be a significant security risk!
- Isolation: Prevent unauthorized access between different application tiers (e.g., frontend talking directly to a sensitive database).
- Security: Reduce the attack surface by only allowing necessary connections.
- Compliance: Help meet regulatory requirements for network segmentation.
All lessons in this course
- Docker Network Modes
- Kubernetes Networking Basics
- Network Policies in Containers
- Service Discovery and DNS in Kubernetes