Least Functionality

Definitions

1. A hardening principle that systems should expose only the functions, services, ports, protocols, and features necessary for their mission. Removing unnecessary functionality reduces attack surface and simplifies monitoring and patching.

   In plain English: Keeping only the features and services that are actually needed.

   Example: "The server baseline enforced least functionality by disabling unused daemons, shells, and legacy protocols."

Related Terms

• Baseline Security
• Configuration Audit
• Container Security
• Docker Security
• Endpoint Hardening
• Harden
• Legacy Protocol
• Minimum Privilege
• Minimum Security Baseline
• Network Mapping
• PAC File Security
• RDP Security
• Registry Security