The NSX-T Tier-0 Gateway Firewall must configure SpoofGuard to block outbound IP packets that contain illegitimate packet attributes.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-251743 | T0FW-3X-000036 | SV-251743r810096_rule | CCI-000366 | medium |
| Description | ||||
| If outbound communications traffic is not filtered, hostile activity intended to harm other networks may not be detected and prevented. | ||||
| STIG | Date | |||
| VMware NSX-T Tier-0 Gateway Firewall Security Technical Implementation Guide | 2023-06-22 | |||
Details
Check Text (C-251743r810096_chk)
From the NSX-T Manager web interface, go to Networking >> Segments and for each Segment, view Segment Profiles >> SpoofGuard.
If a Segment is not configured with a SpoofGuard profile that has Port Binding enabled, this is a finding.
Fix Text (F-55134r810095_fix)
To create a segment profile with SpoofGuard enabled, do the following:
From the NSX-T Manager web interface, go to Networking >> Segments >> Segment Profiles >> Add Segment Profile >> SpoofGuard.
Enter a profile name, enable port bindings, and then click "Save".
To update a Segments SpoofGuard profile, do the following:
From the NSX-T Manager web interface, go to Networking >> Segments and click "Edit" from the drop-down menu next to the target Segment.
Expand Segment Profiles, choose the new SpoofGuard profile from the drop-down list, and then click "Save".