AU-08(01) Synchronization with Authoritative Time Source

STIG rules that implement this control 7

Canonical Ubuntu 22.04 LTS V2R10

• UBTU-22-252010 CAT III Ubuntu 22.04 LTS must, for networked systems, compare internal information system clocks at least every 24 hours with a server synchronized to one of the redundant United States Naval Observatory (USNO) time servers, or a time server designated for the appropriate DoW network (NIPRNet/SIPRNet), and/or the Global Positioning System (GPS).
• UBTU-22-252015 CAT III Ubuntu 22.04 LTS must synchronize internal information system clocks to the authoritative time source when the time difference is greater than one second.

Microsoft Windows 11 V2R11

• WN11-00-000260 CAT III The Windows 11 time service must synchronize with an appropriate DoW time source.

Microsoft Windows Server 2022 V2R11

• WN22-00-000440 CAT III The Windows Server 2022 time service must synchronize with an appropriate DoW time source.

Red Hat Enterprise Linux 9 V2R10

• RHEL-09-252010 CAT II RHEL 9 must have the chrony package installed.
• RHEL-09-252015 CAT II RHEL 9 chronyd service must be enabled.
• RHEL-09-252020 CAT II RHEL 9 must securely compare internal information system clocks at least every 24 hours.