Network Policy

Definitions

1. A defined rule set controlling which network communications are allowed between systems, services, namespaces, or endpoints. The term is commonly used in container platforms and zero-trust designs where traffic permissions are declared explicitly instead of assumed implicitly.

   In plain English: A rule that defines what network traffic is allowed between systems.

   Example: "The pod could not reach the database because the Kubernetes network policy only allowed traffic from the API namespace."

Related Terms

• Demilitarized Zone
• Disclosure Policy
• DMZ
• Flat Network
• Jump Box
• Jump Server
• Minimum Security Baseline
• Ring Fence