What does CIP-007 R1.1 specifically address regarding network ports?

CIP-007 R1.1 specifically focuses on the requirement to ensure that necessary logical network ports are enabled, while those that are not necessary should be disabled. This part of the NERC CIP standards is essential for maintaining cybersecurity within the bulk electric system. By enabling only those ports that are required for operation, organizations can reduce their attack surface, thereby minimizing the potential for unauthorized access or exploitation.

Maintaining a limited set of enabled ports is a crucial aspect of network security, as it helps ensure that only legitimate traffic is allowed through, reducing the chances of malicious entities gaining access to critical systems. This requirement underscores the importance of a well-defined network configuration that supports security best practices.

Furthermore, other options do not align with the specific focus of R1.1. Default settings do not inherently relate to network port management, while enabling unnecessary services and addressing physical access fall outside the scope of what R1.1 prescribes. The emphasis is solely on enabling essential ports, which supports the overall goal of enhancing the security posture of critical infrastructure systems.