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V-251759

CAT III (Low)

The NSX-T Tier-0 Gateway must be configured to have multicast disabled if not in use.

Rule ID

SV-251759r810161_rule

STIG

VMware NSX-T Tier-0 Gateway RTR Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-000381

Discussion

A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attacks by malicious users within the network. Preventing network breaches from within is dependent on implementing a comprehensive defense-in-depth strategy, including securing each device connected to the network. This is accomplished by following and implementing all security guidance applicable for each node type. A fundamental step in securing each router is to enable only the capabilities required for operation.

Check Content

From the NSX-T Manager web interface, go to Networking >> Tier-0 Gateways.

For every Tier-0 Gateway, expand the Tier-0 Gateway, then expand Multicast to view the Multicast configuration.

If Multicast is enabled and not in use, this is a finding.

Fix Text

To disable Multicast do the following:

From the NSX-T Manager web interface, go to Networking >> Tier-0 Gateways and edit the target Tier-0 Gateway.

Expand Multicast, change from "Enabled" to "Disabled", and then click "Save".