GFI LanGuard uses the Simple Network Management Protocol (SNMP)Simple Network Management Protocol is a technology used to monitor network devices such as, routers, hubs and switches. to obtain information, like hardware specifications and operating system version, from network devices, such as servers, computers, printers, hubs, switches, and routers. Through SNMPSimple Network Management Protocol is a protocol for network management. It is used to collect information from network devices, such as servers, printers, hubs, switches, and routers., GFI LanGuard can monitor network performance, audit network usage and detect network faults.


GFI LanGuard supports SNMPv1 and SNMPv2c.

SNMPv3 and SNMP over TLS / DTLS are NOT supported.

SNMP Walk toolA tool used to probe your network nodes and retrieve SNMP information.

To probe your network nodes and retrieve SNMP information (for example, OID’s):

1. Launch GFI LanGuard.

2. Click Utilities tab and select SNMP Walk in the left pane under Tools.

3. In the IP address menu, specify the IP address of the computer that you wish to scan for SNMP information.

4. From Common Tasks in the left pane, click Edit SNMP Audit options. Alternatively use the Options button available in the top-right section of the screen, to edit the default options, such as providing alternative community strings.

5. Click Retrieve to start the process.


SNMP activity is normally blocked at the router / firewall so that internet users cannot SNMP scan your network. Malicious users can use information collected through SNMP scanning to hack your network or systems. Unless this service is required, it is highly recommended to disable it.