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

From Layer 2 Switch Security Technical Implementation Guide

Part of SNMP access is not restricted by IP address.

SV-3021r3_rule Network devices must only allow SNMP access from addresses belonging to the management network.

Vulnerability 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.

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