What is a requirement for Interactive Remote Access sessions according to CIP-005 R2?

The requirement for Interactive Remote Access sessions according to CIP-005 R2 emphasizes the importance of establishing secure connections that protect critical infrastructure. Implementing methods for disabling active vendor remote access directly addresses the risks associated with external access to systems. This is crucial for ensuring that any access by vendors can be controlled and monitored, reducing the likelihood of unauthorized access or potential security breaches. By having mechanisms in place to disable vendor access, organizations can maintain tighter security over their critical infrastructure.

The focus of this requirement aligns with the overall objectives of the NERC CIP standards, which prioritize security measures to protect the reliable operation of the electric grid. In this context, ensuring that vendor remote access can be easily managed and restricted is a key aspect of maintaining robust security postures for vital systems.

The other options presented do not align with the required security measures outlined by CIP-005 R2. Single-factor authentication may not provide adequate security for sensitive sessions, terminating encryption can expose data to risks, and disabling encryption for performance sacrifices security for speed, which is not acceptable in environments managing critical infrastructure.