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The ESXi host must configure NTP time synchronization.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-256409ESXI-70-000046SV-256409r1038976_ruleCCI-001891medium
Description
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
STIGDate
VMware vSphere 7.0 ESXi Security Technical Implementation Guide2025-02-11

Related Frameworks

2 mappings across 3 frameworks
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (5) 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(1)Synchronization with Authoritative Time Source
1.00
CM-6Configuration Settings
1.00
SC-45System Time Synchronization
1.00
SC-45(1)Synchronization with Authoritative Time Source
1.00
NIST 800-1710 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.

3.3.7
1.00
CCI2 mappings
CCI-001891
1.00
CCI-002046
1.00

Details

Check Text (C-256409r1038976_chk)

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.

Fix Text (F-60027r886007_fix)

From the vSphere Client, go to Hosts and Clusters. Select the ESXi Host >> Configure >> System >> Time Configuration. Under "Network Time Protocol", click "Edit...". Ensure the "NTP Servers" are authorized DOD time sources. Ensure the "NTP Service Startup Policy" is set to "Start and stop with host". Ensure the "Enable" checkbox, in the upper left, is checked. Click "OK". Click "Edit" to configure the NTP service to start and stop with the host and with authoritative DOD time sources. or From a PowerCLI command prompt while connected to the ESXi host, run the following commands: $NTPServers = "ntpserver1","ntpserver2" Get-VMHost | Add-VMHostNTPServer $NTPServers Get-VMHost | Get-VMHostService | Where {$_.Label -eq "NTP Daemon"} | Set-VMHostService -Policy On Get-VMHost | Get-VMHostService | Where {$_.Label -eq "NTP Daemon"} | Start-VMHostService