Title

The router must be configured to have all non-essential capabilities disabled. (Cat III impact)

Discussion

A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attacks by malicious users within the network. Preventing network breaches from within is dependent on implementing a comprehensive defense-in-depth strategy, including securing each device connected to the network. This is accomplished by following and implementing all security guidance applicable for each node type. A fundamental step in securing each router is to enable only the capabilities required for operation.

Check Content

Review the router configuration to determine if services or functions not required for operation, or not related to router functionality (e.g., DNS, email client or server, FTP server, or web server) are enabled. If unnecessary services and functions are enabled on the router, this is a finding.

Fix Text

Remove unneeded services and functions from the router. Removal is recommended because the service or function may be inadvertently enabled otherwise. However, if removal is not possible, disable the service or function.

Additional Identifiers

Rule ID: SV-207123r604135_rule

Vulnerability ID: V-207123

Group Title: SRG-NET-000131

Expert Comments

CCIs tied to check.

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