Physical attacks
Mobile Apps Pentesting
Pentesting

23 - Pentesting Telnet

Basic Information

Telnet is a network protocol that gives users a UNsecure way to access a computer over a network.

Default port: 23

23/tcp open telnet

Banner Grabbing

nc -vn <IP> 23

Enumeration

All the interesting enumeration can be performed by nmap:

nmap --script "*telnet* and safe" -p 23 <IP>

The script telnet-ntlm-info.nse will obtain NTLM info (Windows versions).

Config file

/etc/inetd.conf
/etc/xinetd.d/telnet
/etc/xinetd.d/stelnet