What does hardening refer to in network security?

Hardening in network security primarily refers to the process of making computers and network appliances more secure through various policies and measures. This involves a comprehensive approach to securing systems by reducing their surface of vulnerability. Hardening techniques can include removing unnecessary services, applying security patches, configuring settings securely, and enforcing security policies to protect against unauthorized access and threats.

This process is essential for establishing a robust security posture, as it enhances the overall resilience of the system against cyber threats. Organizations often implement hardening guidelines and best practices to ensure that all systems are fortified against potential attacks, making option B the most accurate description of hardening in the context of network security.