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V-57203

The operating system must synchronize internal information system clocks to the authoritative time source when the time difference is greater than one second.

Finding ID
SRG-OS-000356-GPOS-00144
Rule ID
SV-71463r1_rule
Severity
Cat II
CCE
(None)
Group Title
SRG-OS-000356-GPOS-00144
CCI
CCI-002046
Target Key
(None)
Documentable
No
Discussion

Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. Synchronizing internal information system clocks provides uniformity of time stamps for information systems with multiple system clocks and systems connected over a network. Organizations should consider setting time periods for different types of systems (e.g., financial, legal, or mission-critical systems). Organizations should also consider endpoints that may not have regular access to the authoritative time server (e.g., mobile, teleworking, and tactical endpoints). This requirement is related to the comparison done every 24 hours in SRG-OS-000355 because a comparison must be done in order to determine the time difference.

Fix Text

Configure the operating system to synchronize internal information system clocks to the authoritative time source when the time difference is greater than the organization-defined time period.

Check Content

Verify the operating system synchronizes internal information system clocks to the authoritative time source when the time difference is greater than one second. If it does not, this is a finding.