Detections
Analytics
ESXI-67-000065 - For the ESXi host, all port groups must not be configured to VLAN values reserved by upstream physical switches.
Information
Certain physical switches reserve certain VLAN IDs for internal purposes and often disallow traffic configured to these values. For example, Cisco Catalyst switches typically reserve VLANs 1001-1024 and 4094, while Nexus switches typically reserve 3968-4047 and 4094. Check the documentation for the specific switch. Using a reserved VLAN might result in a denial of service on the network.Solution
From the vSphere Client, select the ESXi host and go to Configure >> Networking >> Virtual switches.Highlight a port group where VLAN ID is set to a reserved value and click 'Edit' settings (dots).
Change the VLAN ID to an appropriate VLAN 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#'
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-7_Y23M07_STIG.zip
Item Details
Audit Name: DISA STIG VMware vSphere 6.7 ESXi v1r3
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-239319r674886_rule, STIG-ID|ESXI-67-000065, Vuln-ID|V-239319
Plugin: VMware
Control ID: 71a5db0fcc3f4704ef95bb8e8151a7333837c473598e1e1063265c0a6e304b81