STIGQter: STIG Summary: Dell OS10 Switch Router Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Apr 2026:

The Dell OS10 multicast Designated Router (DR) must be configured to filter the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Report messages to allow hosts to join only multicast groups that have been approved by the organization.

DISA Rule

SV-269898r1052079_rule

Vulnerability Number

V-269898

Group Title

SRG-NET-000364-RTR-000114

Rule Version

OS10-RTR-000800

Severity

CAT III

CCI(s)

• CCI-002403 - Only allow incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

Weight

10

Fix Recommendation

Configure the DR to filter the IGMP and MLD report messages to allow hosts to join only those multicast groups that have been approved.

OS10(config)# ip access-list IGMP_FILTER
OS10(config-ipv4-acl)# deny 2 224.0.0.22 239.8.0.0/16 ttl eq 1
OS10(config-ipv4-acl)# permit ip any any

OS10(config)# interface vlan 100
OS10(conf-if-vl-100)# ip access-group IGMP_FILTER in

Check Contents

Review the configuration of the DR to verify that it is filtering IGMP or MLD report messages, allowing hosts to join only those groups that have been approved.

Note: This requirement is only applicable to Source Specific Multicast (SSM) implementation. This requirement is not applicable to Any Source Multicast (ASM) since the filtering is being performed by the Rendezvous Point router.

Step 1: Verify that SSM is in use. If not, this requirement is not applicable.

!
ip access-list ssm-1
seq 10 permit ip any 236.0.0.0/8

!
ip pim ssm-range ssm-1

Step 2: Verify that each interface applies an appropriate inbound IGMP filter that permits or denies IGMP messages.

!
interface vlan100
no shutdown
ip access-group IGMP_FILTER in

!
ip access-list IGMP_FILTER
seq 10 deny 2 224.0.0.22 239.8.0.0/16 ttl eq 1
seq 20 permit ip any any

If the DR is not filtering IGMP or MLD report messages, this is a finding.

Vulnerability Number

V-269898

Documentable

False

Rule Version

OS10-RTR-000800

Severity Override Guidance

Review the configuration of the DR to verify that it is filtering IGMP or MLD report messages, allowing hosts to join only those groups that have been approved.

Note: This requirement is only applicable to Source Specific Multicast (SSM) implementation. This requirement is not applicable to Any Source Multicast (ASM) since the filtering is being performed by the Rendezvous Point router.

Step 1: Verify that SSM is in use. If not, this requirement is not applicable.

!
ip access-list ssm-1
seq 10 permit ip any 236.0.0.0/8

!
ip pim ssm-range ssm-1

Step 2: Verify that each interface applies an appropriate inbound IGMP filter that permits or denies IGMP messages.

!
interface vlan100
no shutdown
ip access-group IGMP_FILTER in

!
ip access-list IGMP_FILTER
seq 10 deny 2 224.0.0.22 239.8.0.0/16 ttl eq 1
seq 20 permit ip any any

If the DR is not filtering IGMP or MLD report messages, this is a finding.

Check Content Reference

M

Target Key

5668