Remote SNMP

SNMP (Simple Network Management Protocol) is widely supported by routers, switches, printers, UPS devices and many other network equipment. Choose Options → Remote SNMP from the menu.

The dialog shows four columns: Item Name, Community/User, Version and MIB OID. When creating a new entry, select the SNMP version:

• SNMPv1, SNMPv2c: community-based authentication. Enter one or more community strings separated by commas.
• SNMPv3: secure authentication with username, auth password and privacy password.

SNMPv3 supports MD5 and SHA-1 through SHA-512 authentication, and DES and AES encryption including the AES-192-B and AES-256-B key-extension variants. If you are unsure what a device uses, click Detect to have the correct algorithms determined automatically. Frequently used credentials can be saved with the Save / Load buttons and reused across entries.

The string display mode can be set to Automatic detection, ASCII or HEX.

There is a built-in MIB browser for easy selection of OIDs. The browser searches a comprehensive MIB database as you type a name or an OID, and shows a symbolic path for the selected OID.

OIDs may contain the variable parts %0 and %1. The former is replaced with the octets of the scanned IP address, and the latter with the octets of the scanned MAC address. For example, the OID 1.3.6.1.2.1.4.20.1.3.%0 can be used to extract a device’s network mask.