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The HYCU virtual appliance must be configured to synchronize internal information system clocks using redundant authoritative time sources.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-268216HYCU-ND-000440SV-268216r1038348_ruleCCI-004922medium
Description
The loss of connectivity to a particular authoritative time source will result in the loss of time synchronization (free-run mode) and increasingly inaccurate time stamps on audit events and other functions. Multiple time sources provide redundancy by including a secondary source. Time synchronization is usually a hierarchy; clients synchronize time to a local source while that source synchronizes its time to a more accurate source. The network device must use an authoritative time server and/or be configured to use redundant authoritative time sources. This requirement is related to the comparison done in CCI-001891. DOD-approved solutions consist of a combination of a primary and secondary time source using a combination or multiple instances of the following: a time server designated for the appropriate DOD network (NIPRNet/SIPRNet); United States Naval Observatory (USNO) time servers; and/or the Global Positioning System (GPS). The secondary time source must be located in a different geographic region than the primary time source. Satisfies: SRG-APP-000920-NDM-000320, SRG-APP-000925-NDM-000330
STIGDate
HYCU Protege Security Technical Implementation Guide2026-05-23

Related Frameworks

2 mappings across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

MON-07.1Synchronization With Authoritative Time Source
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (15) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(9)Disconnect or Disable Access
1.00
AC-2(3)Disable Accounts
1.00
AU-8Time Stamps
1.00
AU-8(1)Synchronization with Authoritative Time Source
1.00
AU-8(2)Secondary Authoritative Time Source
1.00
AU-9Protection of Audit Information
1.00
CM-6Configuration Settings
1.00
CM-6(1)Automated Management, Application, and Verification
1.00
IA-2(6)Access to Accounts —separate Device
1.00
IA-3(1)Cryptographic Bidirectional Authentication
1.00

+5 more (top 10 by confidence shown)

CCI2 mappings
CCI-004922
1.00
CCI-004923
1.00

Details

Check Text (C-268216r1038348_chk)

Verify the "chronyd" service is up and running, execute the following command: systemctl status chronyd If service is not active (running), this is a finding. To verify chronyd has synced time and can reach the servers execute the following command: chronyc sources If there are not two NTP servers listed, this is a finding. If the "Reach" value is lower than "377" for the source with S column marked with "*" this is a finding.

Fix Text (F-72140r1038347_fix)

Start the time synchronization by logging on to the HYCU console and executing the following command: sudo systemctl restart chronyd Additional assistance can be found at: https://support.hycu.com/hc/en-us/articles/115005424345-HYCU-system-time