STIGQter STIGQter: STIG Summary: Oracle Linux 8 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

OL 8 must use reverse path filtering on all IPv4 interfaces.

DISA Rule

SV-248893r1156652_rule

Vulnerability Number

V-248893

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL08-00-040285

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure OL 8 to use reverse path filtering on all IPv4 interfaces.

Add or edit the following line in a single system configuration file in the "/etc/sysctl.d/" directory:

net.ipv4.conf.all.rp_filter = 1

The system configuration files must be reloaded for the changes to take effect. To reload the contents of the files, run the following command:

$ sudo sysctl --system

Check Contents

Verify OL 8 uses reverse path filtering on all IPv4 interfaces with the following commands:

$ sysctl net.ipv4.conf.all.rp_filter
net.ipv4.conf.all.rp_filter = 1

If the returned line does not have a value of "1", or a line is not returned, this is a finding.

Vulnerability Number

V-248893

Documentable

False

Rule Version

OL08-00-040285

Severity Override Guidance

Verify OL 8 uses reverse path filtering on all IPv4 interfaces with the following commands:

$ sysctl net.ipv4.conf.all.rp_filter
net.ipv4.conf.all.rp_filter = 1

If the returned line does not have a value of "1", or a line is not returned, this is a finding.

Check Content Reference

M

Target Key

5416