STIGQter: STIG Summary: VMware NSX 4.x Tier-1 Gateway Router Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 30 Jan 2025:

The NSX Tier-1 Gateway router must be configured to have all inactive interfaces removed.

DISA Rule

SV-265518r999924_rule

Vulnerability Number

V-265518

Group Title

SRG-NET-000019-RTR-000007

Rule Version

NT1R-4X-000016

Severity

CAT I

CCI(s)

• CCI-001414 - Enforce approved authorizations for controlling the flow of information between connected systems based on organization-defined information flow control policies.

Weight

10

Fix Recommendation

To remove a stale linked segment from a Tier-1 Gateway, do the following:

From the NSX Manager web interface, go to Networking >> Connectivity >> Segments and edit the target segment.

Under Connected Gateway, change to "None" and click "Save".

Note: The stale linked segment can also be deleted if there are no active workloads attached to it.

To remove a stale service interface from a Tier-1 Gateway, do the following:

From the NSX Manager web interface, go to Networking >> Connectivity >> Tier-1 Gateways >> Edit the target Tier-1 gateway.

Expand "Interfaces and GRE Tunnels", then click on the number of interfaces present to open the interfaces dialog.

On the stale service interface, select "Delete" and click "Delete" again to confirm.

Check Contents

From the NSX Manager web interface, go to Networking >> Connectivity >> Tier-1 Gateways.

For every Tier-1 Gateway, expand the Tier-1 Gateway. Click on the number in the Linked Segments to review the currently linked segments.

For every Tier-1 Gateway, expand the Tier-1 Gateway. Expand Interfaces and GRE Tunnels, and click on the number of interfaces present to open the interfaces dialog.

Review each interface or linked segment present to determine if they are not in use or inactive.

If there are any linked segments or service interfaces present on a Tier-1 Gateway that are not in use or inactive, this is a finding.

Vulnerability Number

V-265518

Documentable

False

Rule Version

NT1R-4X-000016

Severity Override Guidance

From the NSX Manager web interface, go to Networking >> Connectivity >> Tier-1 Gateways.

For every Tier-1 Gateway, expand the Tier-1 Gateway. Click on the number in the Linked Segments to review the currently linked segments.

For every Tier-1 Gateway, expand the Tier-1 Gateway. Expand Interfaces and GRE Tunnels, and click on the number of interfaces present to open the interfaces dialog.

Review each interface or linked segment present to determine if they are not in use or inactive.

If there are any linked segments or service interfaces present on a Tier-1 Gateway that are not in use or inactive, this is a finding.

Check Content Reference

M

Target Key

5635