The SUSE operating system must not be performing Internet Protocol version 4 (IPv4) packet forwarding unless the system is a router.
An XCCDF Rule
Description
<VulnDiscussion>Routing protocol daemons are typically used on routers to exchange network topology information with other routers. If this software is used when not required, system network information may be unnecessarily transmitted across the network.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-235024r991589_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure the SUSE operating system to not performing IPv4 packet forwarding by running the following command as an administrator:
> sudo sysctl -w net.ipv4.ip_forward=0
If "0" is not the system's default value, add or update the following line in "/etc/sysctl.d/99-stig.conf":