STIGQter STIGQter: STIG Summary: VMware NSX 4.x Distributed Firewall Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 30 Jan 2025:

The NSX Distributed Firewall must configure an IP Discovery profile to disable trust on every use method.

DISA Rule

SV-265633r993996_rule

Vulnerability Number

V-265633

Group Title

SRG-NET-000364-FW-000042

Rule Version

NDFW-4X-000034

Severity

CAT I

CCI(s)

Weight

10

Fix Recommendation

To create a segment profile for IP Discovery, do the following:

From the NSX Manager web interface, navigate to Networking >> Connectivity >> Segments >> NSX >> Profiles >> Segment Profiles >> Add Segment Profile >> IP Discovery.

Enter a profile name then configure the below settings:

Duplicate IP Detection: Enabled
ARP Snooping: Enabled
ARP Binding Limit: 1
DHCP Snooping: Disabled
DHCP Snooping - IPv6: Disabled
VMware Tools: Disabled
VMware Tools - IPv6: Disabled
Trust on First Use: Enabled

Click "Save".

Note: ND Snooping may be enabled if IPv6 is in use.

To update a segments IP Discovery profile, do the following:

From the NSX Manager web interface, navigate to the Networking >> Connectivity >> Segments >> NSX, and click "Edit" from the drop-down menu next to the target segment.

Expand "Segment Profiles" then choose the new IP Discovery profile from the drop-down list, and then click "Save".

Check Contents

Identify IP Discovery profiles in use by doing the following:

From the NSX Manager web interface, navigate to Networking >> Connectivity >> Segments >> NSX.

For each segment, expand view Segment Profiles >> IP Discovery to note the profiles in use.

Review IP Discovery profile configuration by doing the following:

From the NSX Manager web interface, navigate to Networking >> Connectivity >> Segments >> Profiles >> Segment Profiles.

Review the IP Discovery profiles previously identified as assigned to segments to ensure the following configuration:

Duplicate IP Detection: Enabled
ARP Snooping: Enabled
ARP Binding Limit: 1
DHCP Snooping: Disabled
DHCP Snooping - IPv6: Disabled
VMware Tools: Disabled
VMware Tools - IPv6: Disabled
Trust on First Use: Enabled

If a segment is not configured with an IP Discovery profile that is configured with the settings above, this is a finding.

Vulnerability Number

V-265633

Documentable

False

Rule Version

NDFW-4X-000034

Severity Override Guidance

Identify IP Discovery profiles in use by doing the following:

From the NSX Manager web interface, navigate to Networking >> Connectivity >> Segments >> NSX.

For each segment, expand view Segment Profiles >> IP Discovery to note the profiles in use.

Review IP Discovery profile configuration by doing the following:

From the NSX Manager web interface, navigate to Networking >> Connectivity >> Segments >> Profiles >> Segment Profiles.

Review the IP Discovery profiles previously identified as assigned to segments to ensure the following configuration:

Duplicate IP Detection: Enabled
ARP Snooping: Enabled
ARP Binding Limit: 1
DHCP Snooping: Disabled
DHCP Snooping - IPv6: Disabled
VMware Tools: Disabled
VMware Tools - IPv6: Disabled
Trust on First Use: Enabled

If a segment is not configured with an IP Discovery profile that is configured with the settings above, this is a finding.

Check Content Reference

M

Target Key

5630