You will need working knowledge of SNMP in order to follow through.

snmp-check is a simple utility for basic SNMP enumeration. You only need to provide it with the IP address to enumerate:

snmp-check [IP]
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Furthermore, you have the following command-line options:

• -p: Change the port to enumerate. Default is 161.
• -c: Change the community string to use. Default is public
• -v: Change the SNMP version to use. Default is v1.

There are additional arguments that can be provided but these are the salient ones.

snmpwalk is a much more versatile tool for SNMP enumeration. It's syntax is mostly the same as snmp-check:

Notwithstanding its age, onesixtyone is a good tool which allows you to bruteforce community strings by specifying a file instead of a single string with its -c option. It's syntax is rather simple: