Finger displays information about users on a specified remote computer (typically a computer running UNIX) that is running the finger service or daemon. The remote computer specifies the format and output of the user information display.
Let check if there is any user logged on.
└─$ finger @10.10.10.10
No one logged on
On finger service could allow us to enumerate user.
└─$ finger root@10.10.10.10
Login Name TTY Idle When Where
root Super-User pts/3 <Apr 24, 2018> sunday
└─$ finger any@10.10.10.10
Login Name TTY Idle When Where
any ???
