STIGQter: STIG Summary: VMware vSphere 7.0 ESXi Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 02 Apr 2025:

All port groups on standard switches must not be configured to virtual local area network (VLAN) 4095 unless Virtual Guest Tagging (VGT) is required.

DISA Rule

SV-256425r959010_rule

Vulnerability Number

V-256425

Group Title

SRG-OS-000480-VMM-002000

Rule Version

ESXI-70-000064

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> Networking >> Virtual switches.

For each port group on a standard switch that is configured to a native VLAN, click the "..." button next to the port group.

Click "Edit Settings". On the "Properties" tab, change the "VLAN ID" to an appropriate VLAN ID and click "OK".

or

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

Get-VirtualPortGroup -Name "portgroup name" | Set-VirtualPortGroup -VLanId "New VLAN#"

Check Contents

Note: This control addresses ESXi standard switches. Distributed switches are addressed in the vCenter STIG. If there is no standard switch on the ESXi host, this is not applicable.

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> Networking >> Virtual switches.

For each standard switch, review the "VLAN ID" on each port group and verify it is not set to "4095".

or

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

Get-VirtualPortGroup -Standard | Select Name, VLanId

If any port group is configured with VLAN 4095 and is not documented as a needed exception, this is a finding.

Vulnerability Number

V-256425

Documentable

False

Rule Version

ESXI-70-000064

Severity Override Guidance

Note: This control addresses ESXi standard switches. Distributed switches are addressed in the vCenter STIG. If there is no standard switch on the ESXi host, this is not applicable.

From the vSphere Client, go to Hosts and Clusters.

Select the ESXi Host >> Configure >> Networking >> Virtual switches.

For each standard switch, review the "VLAN ID" on each port group and verify it is not set to "4095".

or

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

Get-VirtualPortGroup -Standard | Select Name, VLanId

If any port group is configured with VLAN 4095 and is not documented as a needed exception, this is a finding.

Check Content Reference

M

Target Key

5518