The system must disable the distributed virtual switch health check.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63961	VCWN-06-000012	SV-78451r1_rule		Low

Description
Network Healthcheck is disabled by default. Once enabled, the healthcheck packets contain information on host#, vds#, port#, which an attacker would find useful. It is recommended that network healthcheck be used for troubleshooting, and turned off when troubleshooting is finished.

STIG	Date
VMware vSphere vCenter Server Version 6 Security Technical Implementation Guide	2017-07-11

Details

Check Text ( C-64713r1_chk )
From the vSphere Web Client go to Networking >> Select a distributed switch >> Manage >> Settings >> Health Check. View the health check pane and verify both checks are disabled. or From a PowerCLI command prompt while connected to the vCenter server run the following commands: $vds = Get-VDSwitch $vds.ExtensionData.Config.HealthCheckConfig If the health check feature is enabled on distributed switches and is not on temporarily for troubleshooting purposes, this is a finding.

Check Text ( C-64713r1_chk )

From the vSphere Web Client go to Networking >> Select a distributed switch >> Manage >> Settings >> Health Check. View the health check pane and verify both checks are disabled.

or

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

$vds = Get-VDSwitch
$vds.ExtensionData.Config.HealthCheckConfig

If the health check feature is enabled on distributed switches and is not on temporarily for troubleshooting purposes, this is a finding.

Fix Text (F-69891r1_fix)
From the vSphere Web Client go to Networking >> Select a distributed switch >> Manage >> Settings >> Health Check. Click the edit button and disable both health checks. or From a PowerCLI command prompt while connected to the vCenter server run the following command: Get-View -ViewType DistributedVirtualSwitch \| ?{($_.config.HealthCheckConfig \| ?{$_.enable -notmatch "False"})}\| %{$_.UpdateDVSHealthCheckConfig(@((New-Object Vmware.Vim.VMwareDVSVlanMtuHealthCheckConfig -property @{enable=0}),(New-Object Vmware.Vim.VMwareDVSTeamingHealthCheckConfig -property @{enable=0})))}

Fix Text (F-69891r1_fix)

From the vSphere Web Client go to Networking >> Select a distributed switch >> Manage >> Settings >> Health Check. Click the edit button and disable both health checks.

or

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

Get-View -ViewType DistributedVirtualSwitch | ?{($_.config.HealthCheckConfig | ?{$_.enable -notmatch "False"})}| %{$_.UpdateDVSHealthCheckConfig(@((New-Object Vmware.Vim.VMwareDVSVlanMtuHealthCheckConfig -property @{enable=0}),(New-Object Vmware.Vim.VMwareDVSTeamingHealthCheckConfig -property @{enable=0})))}