STIGQter: STIG Summary: VMware vSphere 7.0 vCenter Security Technical Implementation Guide Version: 1 Release: 3 Benchmark Date: 24 Jan 2024:

The vCenter Server must set the distributed port group Media Access Control (MAC) Address Change policy to "Reject".

DISA Rule

SV-256349r885658_rule

Vulnerability Number

V-256349

Group Title

SRG-APP-000516

Rule Version

VCSA-70-000269

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

From the vSphere Client, go to "Networking".

Select a distributed switch and then select a port group.

Select Configure >> Settings >> Policies.

Click "Edit".

Click the "Security" tab.

Set "MAC Address Changes" to "Reject".

Click "OK".

or

From a PowerCLI command prompt while connected to the vCenter server, run the following commands:

Get-VDSwitch | Get-VDSecurityPolicy | Set-VDSecurityPolicy -MacChanges $false
Get-VDPortgroup | ?{$_.IsUplink -eq $false} | Get-VDSecurityPolicy | Set-VDSecurityPolicy -MacChanges $false

Check Contents

If distributed switches are not used, this is not applicable.

From the vSphere Client, go to "Networking".

Select a distributed switch and then select a port group.

Select Configure >> Settings >> Policies.

Verify "MAC Address Changes" is set to "Reject".

or

From a PowerCLI command prompt while connected to the vCenter server, run the following commands:

Get-VDSwitch | Get-VDSecurityPolicy
Get-VDPortgroup | ?{$_.IsUplink -eq $false} | Get-VDSecurityPolicy

If the "MAC Address Changes" policy is set to "Accept", this is a finding.

Vulnerability Number

V-256349

Documentable

False

Rule Version

VCSA-70-000269

Severity Override Guidance

If distributed switches are not used, this is not applicable.

From the vSphere Client, go to "Networking".

Select a distributed switch and then select a port group.

Select Configure >> Settings >> Policies.

Verify "MAC Address Changes" is set to "Reject".

or

From a PowerCLI command prompt while connected to the vCenter server, run the following commands:

Get-VDSwitch | Get-VDSecurityPolicy
Get-VDPortgroup | ?{$_.IsUplink -eq $false} | Get-VDSecurityPolicy

If the "MAC Address Changes" policy is set to "Accept", this is a finding.

Check Content Reference

M

Target Key

5517