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NIST 800-53 v5
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SC-45(1): Synchronization with Authoritative Time Source
Synchronization with Authoritative Time Source
SC-45(1): Synchronization with Authoritative Time Source
(a) Compare the internal system clocks [Assignment: organization-defined frequency] with [Assignment: organization-defined authoritative time source]; and
(b) Synchronize the internal system clocks to the authoritative time source when the time difference is greater than [Assignment: organization-defined time period].
Implementation
Not applicable - Not applicable
Planned - The implementation is planned
In progress - The implementation is currently in progress
Partially implemented - The control is partially implemented
Implemented - The control is fully implemented
Alternative implementation - There is an alternative implementation in place (e.g., shared responsibility or inherited implementation)
Description

Synchronization of internal system clocks with an authoritative source provides uniformity of time stamps for systems with multiple system clocks and systems connected over a network.