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CCI-004927

CCI-004927 Definition

Defines the time period for synchronizing the internal system clocks to the authoritative time source.

Status
Type	CheckType.technical

Master Assessment Datasheet

Implementation Guidance

Determine if the internal system clocks are synchronized with the authoritative time source when the time difference is greater than [SC-45(01)_ODP[03]; the time period to compare the internal system clocks with the authoritative time source is defined].

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].

Related Controls

The controls below (if any) were marked by NIST as being related to CCI-004927.

Control	Description
SC-45(1)	(a): Compare the internal system clocks [the frequency at which to compare the internal system clocks with the authoritative time source is defined;] with [the authoritative time source to which internal system clocks are to be compared is defined;] ; and (b): Synchronize the internal system clocks to the authoritative time source when the time difference is greater than [the time period to compare the internal system clocks with the authoritative time source is defined;].

Control

Description

SC-45(1)

(a): Compare the internal system clocks [the frequency at which to compare the internal system clocks with the authoritative time source is defined;] with [the authoritative time source to which internal system clocks are to be compared is defined;] ; and

(b): Synchronize the internal system clocks to the authoritative time source when the time difference is greater than [the time period to compare the internal system clocks with the authoritative time source is defined;].