The SNMP manager is not connected to only the management network.

From Network Devices Security Technical Implementation Guide

Part of The SNMP manager connected to operational network

Associated with IA controls: ECSC-1

SV-19131r1_rule The SNMP manager is not connected to only the management network.

Vulnerability discussion

The SNMP manager provides the interface between the network management personnel and the managed network. On the other hand, the SNMP agent provides the interface between the manager and the device being managed. The manager is the collector of alarm information via SNMP traps as well as statistical and historical management information retrieved by polling the agents within the managed network. This information is vital for real time monitoring and alarm management as well as for strategic planning and performance management. To provide security through separation and isolation, the SNMP manager should only be connected to the management network. This enables the SNMP manager to provide management services to the managed devices using a secured as well as a preferred path.

Check content

Review the network topology to determine what network the network manager is connected to. Verify that it is not dual-homed by physically inspecting the device’s LAN connection.

Fix text

Connect the SNMP manager only to the management network.

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