NIST SP 800-53 Rev. 5
SC-45(2)
System and Communications Protection
enhancement

Secondary Authoritative Time Source

Parent: SC-45

Description

a. Identify a secondary authoritative time source that is in a different geographic region than the primary authoritative time source; and b. Synchronize the internal system clocks to the secondary authoritative time source if the primary authoritative time source is unavailable.

Mapped SPARTA techniques

74 techniques

Cite as SafeMode Space, nist-80053-rev5 SC-45(2).

Built 2026-07-25 from 216 techniques, 334 regulation articles, 125 ENISA controls, 2,610 framework controls, and 90 countermeasures.