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

RHEL 10 must log Internet Protocol version 4 (IPv4) packets with impossible addresses.

DISA Rule

SV-281343r1167179_rule

Vulnerability Number

V-281343

Group Title

SRG-OS-000420-GPOS-00186

Rule Version

RHEL-10-800110

Severity

CAT II

CCI(s)

• CCI-002385 - Protect against or limit the effects of organization-defined types of denial of service events.
• CCI-001098 - Connect to external networks or systems only through managed interfaces consisting of boundary protection devices arranged in accordance with an organizational security architecture.

Weight

10

Fix Recommendation

Configure RHEL 10 to log martian packets on IPv4 interfaces.

Create a configuration file if it does not already exist:

$ sudo vi /etc/sysctl.d/99-ipv4_log_martians.conf

Add the following line to the file:

net.ipv4.conf.all.log_martians=1

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

$ sudo sysctl --system

Check Contents

Verify RHEL 10 logs IPv4 martian packets.

Check the value of the "net.ipv4.conf.all.log_martians" variable with the following command:

$ sudo sysctl net.ipv4.conf.all.log_martians
net.ipv4.conf.all.log_martians = 1

If "net.ipv4.conf.all.log_martians" is not set to "1" or is missing, this is a finding.

Vulnerability Number

V-281343

Documentable

False

Rule Version

RHEL-10-800110

Severity Override Guidance

Verify RHEL 10 logs IPv4 martian packets.

Check the value of the "net.ipv4.conf.all.log_martians" variable with the following command:

$ sudo sysctl net.ipv4.conf.all.log_martians
net.ipv4.conf.all.log_martians = 1

If "net.ipv4.conf.all.log_martians" is not set to "1" or is missing, this is a finding.

Check Content Reference

M

Target Key

5733