From VMware vSphere ESXi 6.0 Security Technical Implementation Guide
Part of SRG-OS-000480-VMM-002000
Associated with: CCI-000366
If you are not using products that make use of the dvfilter network API, the host should not be configured to send network information to a VM. If the API is enabled an attacker might attempt to connect a VM to it thereby potentially providing access to the network of other VMs on the host. If you are using a product that makes use of this API then verify that the host has been configured correctly. If you are not using such a product make sure the setting is blank.
From the vSphere Client select the ESXi Host and go to Configuration >> Advanced Settings. Select the Net.DVFilterBindIpAddress value and verify the value is blank or the correct IP address of a security appliance if in use. or From a PowerCLI command prompt while connected to the ESXi host run the following command: Get-VMHost | Get-AdvancedSetting -Name Net.DVFilterBindIpAddress If the Net.DVFilterBindIpAddress is not blank and security appliances are not in use on the host, this is a finding.
From the vSphere Client select the ESXi Host and go to Configuration >> Advanced Settings. Select the Net.DVFilterBindIpAddress setting and remove any incorrect addresses. or From a PowerCLI command prompt while connected to the ESXi host run the following command: Get-VMHost | Get-AdvancedSetting -Name Net.DVFilterBindIpAddress | Set-AdvancedSetting -Value ""
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