Finger - display’s information about users who are logged on in remote systems.
simple way:
$ echo "sunny" | nc sunday 79
Login Name TTY Idle When Where
sunny ??? ssh <Feb 4 06:31> 10.10.16.101
using tools - https://pentestmonkey.net/tools/user-enumeration/finger-user-enum]\(https://pentestmonkey.net/tools/user-enumeration/finger-user-enum) - download and extract.
$ ./finger-user-enum.pl -U /usr/share/wordlists/seclists/Usernames/Names/names.txt -t 10.129.109.26
Starting finger-user-enum v1.0 ( http://pentestmonkey.net/tools/finger-user-enum )
----------------------------------------------------------
| Scan Information |
----------------------------------------------------------
Worker Processes ......... 5
Usernames file ........... /usr/share/wordlists/seclists/Usernames/Names/names.txt
Target count ............. 1
Username count ........... 10713
Target TCP port .......... 79
Query timeout ............ 5 secs
Relay Server ............. Not used
######## Scan started at Wed Feb 4 00:17:07 2026 #########
access@10.129.109.26: access No Access User < . . . . >..nobody4 SunOS 4.x NFS Anonym < . . . . >..
admin@10.129.109.26: Login Name TTY Idle When Where..adm Admin < . . . . >..dladm Datalink Admin < . . . . >..netadm Network Admin < . . . . >..netcfg Network Configuratio < . . . . >..dhcpserv DHCP Configuration A < . . . . >..ikeuser IKE Admin < . . . . >..lp Line Printer Admin < . . . . >..
anne marie@10.129.109.26: Login Name TTY Idle When Where..anne ???..marie ???..
bin@10.129.109.26: bin ??? < . . . . >..
dee dee@10.129.109.26: Login Name TTY Idle When Where..dee ???..dee ???..
ike@10.129.109.26: ikeuser IKE Admin < . . . . >..
jo ann@10.129.109.26: Login Name TTY Idle When Where..ann ???..jo ???..
la verne@10.129.109.26: Login Name TTY Idle When Where..la ???..verne ???..
line@10.129.109.26: Login Name TTY Idle When Where..lp Line Printer Admin < . . . . >..
message@10.129.109.26: Login Name TTY Idle When Where..smmsp SendMail Message Sub < . . . . >..
miof mela@10.129.109.26: Login Name TTY Idle When Where..mela ???..miof ???..
root@10.129.109.26: root Super-User console <Dec 7, 2023>..
sammy@10.129.109.26: sammy ??? ssh <May 6, 2025> 10.10.14.68 ..
sunny@10.129.109.26: sunny ??? ssh <Apr 13, 2022> 10.10.14.13 ..
sys@10.129.109.26: sys ??? < . . . . >..
zsa zsa@10.129.109.26: Login Name TTY Idle When Where..zsa ???..zsa ???..
######## Scan completed at Wed Feb 4 00:49:31 2026 #########
16 results.
10713 queries in 1944 seconds (5.5 queries / sec)