STIGQter STIGQter: STIG Summary: VMware NSX-T Tier-0 Gateway RTR Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 02 Sep 2022:

The NSX-T Tier-0 Gateway must be configured to have Internet Control Message Protocol (ICMP) unreachable notifications disabled on all external interfaces.

DISA Rule

SV-251753r856694_rule

Vulnerability Number

V-251753

Group Title

SRG-NET-000362-RTR-000113

Rule Version

T0RT-3X-000064

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

To configure a shared rule to drop ICMP unreachable messages do the following:

From the NSX-T Manager web interface, go to Security >> Gateway Firewall >> All Shared Rules.

Click "Add Rule" (Add a policy first if needed), under services select "ICMP Destination Unreachable", and then click "Apply".

Enable logging, and under the Applied To field select the target Tier-0 Gateways. Click "Publish" to enforce the new rule.

Note: A rule can also be created under Gateway Specific Rules to meet this requirement.

Check Contents

If the Tier-0 Gateway is deployed in an Active/Active HA mode, this is Not Applicable.

From the NSX-T Manager web interface, go to Security >> Gateway Firewall >> Gateway Specific Rules, and choose each Tier-0 Gateway in the drop-down.

Review each Tier-0 Gateway Firewall rule to verify one exists to drop ICMP unreachable messages.

If a rule does not exist to drop ICMP unreachable messages, this is a finding.

Vulnerability Number

V-251753

Documentable

False

Rule Version

T0RT-3X-000064

Severity Override Guidance

If the Tier-0 Gateway is deployed in an Active/Active HA mode, this is Not Applicable.

From the NSX-T Manager web interface, go to Security >> Gateway Firewall >> Gateway Specific Rules, and choose each Tier-0 Gateway in the drop-down.

Review each Tier-0 Gateway Firewall rule to verify one exists to drop ICMP unreachable messages.

If a rule does not exist to drop ICMP unreachable messages, this is a finding.

Check Content Reference

M

Target Key

5452