Title

Network devices must only allow SNMP access from addresses belonging to the management network. (Cat II impact)

Discussion

Detailed information about the network is sent across the network via SNMP. If this information is discovered by attackers it could be used to trace the network, show the networks topology, and possibly gain access to network devices.

Check Content

Review the device configuration and verify it is configured to only allow SNMP access from addresses belonging to the management network. If the device is not configured to filter SNMP from the management network only, this is a finding.

Fix Text

Configure the network devices to only allow SNMP access from only addresses belonging to the management network.

Additional Identifiers

Rule ID: SV-3021r3_rule

Vulnerability ID: V-3021

Group Title: SNMP access is not restricted by IP address.

Expert Comments

CCIs tied to check.

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