Finger

Finger protocol provides information about the users and computers connected to them.
The output information contains the activity status of the users, name, address etc..,
Requires: a username to query
The usernames can be bruteforced with finger-user-enum​

User Enumeration

perl finger-user-enum.pl -U /usr/share/seclists/Usernames/Names/names.txt -t 10.10.10.10

Machine: