Title

IP forwarding for IPv4 must not be enabled, unless the system is a router. (Cat II impact)

Discussion

If the system is configured for IP forwarding and is not a designated router, it could be used to bypass network security by providing a path for communication not filtered by network devices.

Check Content

# ls -l /etc/notrouter If the file does not exist, this is a finding.

Fix Text

# touch /etc/notrouter

Additional Identifiers

Rule ID: SV-28435r1_rule

Vulnerability ID: V-12023

Group Title:

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.