Which requirement involves the management and control of network ports and services?

The focus of managing and controlling network ports and services is specifically addressed in CIP-007 R1. This requirement mandates that entities must implement security measures to manage and control access to network ports and services in order to protect critical infrastructure. This includes requirements for identifying ports and services that are necessary for the operation of a system, disabling those that are not in use, and establishing a process to manage any changes to them.

This proactive approach is essential for preventing unauthorized access and mitigating potential vulnerabilities that could arise from open or unsecured ports and services. By ensuring that only those necessary for legitimate operations are left open, organizations can reinforce their security posture.

Understanding this requirement is crucial for ensuring compliance with NERC CIP standards as it directly impacts the overall security of the Electric Sector's network configurations and connectivity.