V-265338

Discussion

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. 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.

Check Content

From the NSX Manager web interface, go to System >> Configuration >> Fabric >> Profiles >> Node Profiles.

Click "All NSX Nodes" and verify the NTP servers listed.

or

From an NSX Manager shell, run the following command:

> get ntp-server

If the output does not contain at least two authoritative time sources, this is a finding.

If the output contains unknown or nonauthoritative time sources, this is a finding.