1) Prepare the IP address of the Victim. (e.g : 188.8.131.52 )
2) Download and Install Advanced Port Scanner.
3) Open Advanced Port Scanner and Type the IP Address in the right column and Click Scan.
4) It will lists you all Opened Ports of the Victim’s PC or Router. (e.g : Port 91 )
5) After retrieving the IP address and the Opened Ports of the Victim, Open Command Prompt (CMD) and Type: telnet [IP ADDRESS] [PORT] e.g : telnet 101.23.53.05 91