When you open a command prompt and enter telnet command and get the following error as shown in below snapshot. It means telnet is not installed in your computer.
Error: ‘telnet’ is not recognized as an internal or external command, operable programs or batch file.
What is Telnet?
Syntax:
Telnet host port
Host – Stands for the address of the service.
Port – This is a port number on which the service runs.
| Port No | Service | Port No | Service |
| 21 | FTP | 143 | IMAP |
| 22 | SSH | 194 | IRC |
| 23 | TELNET | 443 | SSL |
| 25 | SMTP | 445 | SMB |
| 53 | DNS | 1433 | MSSQL |
| 80 | HTTP | 3306 | MySQL |
| 110 | POP3 | 3389 | Remote Desktop |
| 115 | SFTP | 5632 | PCAnywhere |
| 135 | RPC | 5900 | VNC |
| 139 | NetBIOS | 6112 | Warcraft III |
How to Install Telnet in Windows 7 and Vista computers?
If you want to use Telnet service in Windows Vista and Windows 7, first follow below steps to install Telnet service in your computer.
Following steps will enable Telnet service in your computer.
Step-1:
Go to “Start” Menu > Open “Control Panel” > Click on “Programs and Features” option.
Step-2:
Click on “Turn Windows features on or off” under “Programs and Features” option.
Step-3:
Now select checkbox for both “Telnet Client” and “Telnet Server” as shown in below snapshot.
Step-4:
Click on “OK” button.
Once the installation is completed, you can use Telnet feature in your computer, telnet is working properly.
Now I hope you can easily install Telnet in Windows 7.
