V-256409

Discussion

To ensure the accuracy of the system clock, it must be synchronized with an authoritative time source within DOD. Many system functions, including time-based logon and activity restrictions, automated reports, system logs, and audit records, depend on an accurate system clock. If there is no confidence in the correctness of the system clock, time-based functions may not operate as intended and records may be of diminished value. Satisfies: SRG-OS-000355-VMM-001330, SRG-OS-000356-VMM-001340

Check Content

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> System >> Time Configuration.

Under "Current Time Configuration", verify "Time Synchronization" is set to "Network Time Protocol". 

Under "Network Time Protocol", verify the "NTP Servers" are authorized DOD time sources.

If the ESXi host is not configured to pull time from authoritative DOD time sources, this is a finding.

or

From a PowerCLI command prompt while connected to the ESXi host, run the following commands:

Get-VMHost | Get-VMHostNTPServer
Get-VMHost | Get-VMHostService | Where {$_.Label -eq "NTP Daemon"}

If the NTP service is not configured with authoritative DOD time sources or the service does not have a "Policy" of "on" or is stopped, this is a finding.