Title

A system used for routing must not run other network services or applications. (Cat II impact)

Discussion

Installing extraneous software on a system designated as a dedicated router poses a security threat to the system and the network. Should an attacker gain access to the router through the unauthorized software, the entire network is susceptible to malicious activity.

Check Content

Ask the SA if the system is a designated router. If it is not, this is not applicable. Check the system for non-routing network services. Procedure: # netstat -a | grep -i listen # ps -ef If non-routing services, including Web servers, file servers, DNS servers, or applications servers, but excluding management services, such as SSH and SNMP, are running on the system, this is a finding.

Fix Text

Ensure only authorized software is loaded on a designated router. Authorized software will be limited to the most current version of routing protocols and SSH for system administration purposes.

Additional Identifiers

Rule ID: SV-4398r2_rule

Vulnerability ID: V-4398

Group Title:

Expert Comments

CCIs tied to check.

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