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The Cisco switch must be configured to synchronize its clock with the primary and secondary time sources using redundant authoritative time sources.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-220498CISC-ND-001030SV-220498r1026071_ruleCCI-004928medium
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 utilize 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.
STIGDate
Cisco NX OS Switch NDM Security Technical Implementation Guide2024-09-10

Related Frameworks

1 mapping across 2 frameworks
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (7) 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.

AU-8Time Stamps
1.00
AU-8(2)Secondary Authoritative Time Source
1.00
CM-6Configuration Settings
1.00
IA-3(1)Cryptographic Bidirectional Authentication
1.00
SC-45System Time Synchronization
1.00
SC-45(1)Synchronization with Authoritative Time Source
1.00
SC-45(2)Secondary Authoritative Time Source
1.00
CCI1 mapping
CCI-004928
1.00

Details

Check Text (C-220498r1026071_chk)

Review the Cisco switch configuration to verify it is compliant with this requirement as shown in the configuration example below: ntp server 10.1.12.10 ntp server 10.1.22.13 If the Cisco switch is not configured to synchronize its clock with redundant authoritative time sources, this is a finding.

Fix Text (F-22202r1015487_fix)

Configure the Cisco switch to synchronize its clock with redundant authoritative time sources as shown in the example below: SW1(config)# feature ntp SW1(config)# ntp server 10.1.12.10 SW1(config)# ntp server 10.1.22.13 SW1(config)# end