STIGQter: STIG Summary: Red Hat Enterprise Linux 10 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

RHEL 10 must not accept router advertisements on all Internet Protocol version 6 (IPv6) interfaces.

DISA Rule

SV-281354r1167212_rule

Vulnerability Number

V-281354

Group Title

SRG-OS-000420-GPOS-00186

Rule Version

RHEL-10-800220

Severity

CAT II

CCI(s)

CCI-002385 - Protect against or limit the effects of organization-defined types of denial of service events.
CCI-001109 - Deny network communications traffic by default and allow network communications traffic by exception at managed interfaces; and/or for organization-defined systems.

Weight

Fix Recommendation

Configure RHEL 10 to not accept router advertisements on all IPv6 interfaces, unless the system is a router.

Create a configuration file if it does not already exist:

$ sudo vi /etc/sysctl.d/ipv4_accept_ra.conf

Add the following line to the file:

net.ipv6.conf.all.accept_ra = 0

Reload settings from all system configuration files with the following command:

$ sudo sysctl --system

Check Contents

Note: If IPv6 is disabled on the system, this requirement is not applicable.

Verify RHEL 10 does not accept router advertisements on all IPv6 interfaces, unless the system is a router.

Check that "net.ipv6.conf.all.accept_ra" is set to not accept router advertisements by using the following command:

$ sudo sysctl net.ipv6.conf.all.accept_ra
net.ipv6.conf.all.accept_ra = 0

If "net.ipv6.conf.all.accept_ra" is not set to "0" or is missing, this is a finding.

Vulnerability Number

V-281354

Documentable

False

Rule Version

RHEL-10-800220

Severity Override Guidance

Check Content Reference

Target Key

5733