Detections
Analytics

ARBA-ND-000298 - AOS must be configured to synchronize internal information system clocks using redundant authoritative time sources.

Information

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.

Solution

Configure AOS with the following commands:
configure terminal
ntp authentication-key (keyid #> sha1 <plaintext key>
ntp trusted-key <keyid #>
ntp server <first fqdn, ipv4, or ipv6 address> key <keyid #>
ntp server <second fqdn, ipv4, or ipv6 address> key <keyid #>
ntp authenticate
write memory

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_HPE_Aruba_Networking_AOS_Y26M04_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY, CONFIGURATION MANAGEMENT

References: 800-53|AU-8(2), 800-53|CM-6b., CAT|II, CCI|CCI-000366, CCI|CCI-001893, Rule-ID|SV-266953r1039880_rule, STIG-ID|ARBA-ND-000298, Vuln-ID|V-266953

Plugin: ArubaOS

Control ID: d906b84f7e9f1712e092c21a9f6f449500a83923d3ba0253c711366534dd778f