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Virtual machines (VMs) must remove unneeded parallel devices.


Overview

Finding ID Version Rule ID IA Controls Severity
V-258724 VMCH-80-000211 SV-258724r933233_rule Medium
Description
Ensure no device is connected to a virtual machine if it is not required. For example, floppy, serial, and parallel ports are rarely used for virtual machines in a data center environment, and CD/DVD drives are usually connected only temporarily during software installation.
STIG Date
VMware vSphere 8.0 Virtual Machine Security Technical Implementation Guide 2023-10-11

Details

Check Text ( C-62464r933231_chk )
Parallel devices are no longer visible through the vSphere Client and must be done via the Application Programming Interface (API) or PowerCLI.

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

Get-VM | Where {$_.ExtensionData.Config.Hardware.Device.DeviceInfo.Label -match "parallel"}

If a virtual machine has a parallel device present, this is a finding.
Fix Text (F-62373r933232_fix)
Parallel devices are no longer visible through the vSphere Client and must be done via the Application Programming Interface (API) or PowerCLI.

The VM must be powered off to remove a parallel device.

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

$pport = (Get-VM -Name ).ExtensionData.Config.Hardware.Device | Where {$_.DeviceInfo.Label -match "Parallel"}
$spec = New-Object VMware.Vim.VirtualMachineConfigSpec
$spec.DeviceChange += New-Object VMware.Vim.VirtualDeviceConfigSpec
$spec.DeviceChange[-1].device = $pport
$spec.DeviceChange[-1].operation = "remove"
(Get-VM -Name ).ExtensionData.ReconfigVM($spec)