Simple Network Management Protocol — brute community strings, then walk the MIB.
onesixtyone -c /usr/share/seclists/Discovery/SNMP/common-snmp-community-strings.txt $tnmap -sU -p161 --script snmp-brute $tsnmpwalk -v2c -c public $tsnmpwalk -v2c -c public $t 1.3.6.1.4.1.77.1.2.25 # userssnmpwalk -v2c -c public $t 1.3.6.1.2.1.25.4.2.1.2 # processes