CCI-004929

Synchronize the internal system clocks to the secondary authoritative time source if the primary authoritative time source is unavailable.

Implementation Guidance

Determine if the internal system clocks are synchronized to the secondary authoritative time source if the primary authoritative time source is unavailable.

Validation Procedures

Examine: [SELECT FROM: System and communications protection policy; procedures addressing time synchronization; system design documentation; system configuration settings and associated documentation; system audit records; system security plan; other relevant documents or records]. Interview: [SELECT FROM: System/network administrators; organizational personnel with information security responsibilities; organizational personnel installing, configuring, and/or maintaining the system]. Test: [SELECT FROM: Mechanisms supporting and/or implementing system time synchronization with secondary authoritative time sources].

The controls below (if any) were marked by NIST as being related to CCI-004929.