What is the use of telnet command ?

telnet command is used to check if a port is open in your network.

telnet [Domain_name or IP] [Port]

Example

telnet myapp-beta-final.com 80

In Windows : If a  blank screen  appears without an error message, means connection is successful, Otherwise not.

If telnet service is not available, enable it :

• Go to Control panel > Programs > Turn Windows features on or off
• Enable Telnet Client
• Click OK

In Linux : You will get status Connected. You can exit by pressing Ctrl + ]

Trying 10.106.200.116...

Connected to myapp-beta-final.com.

Escape character is '^]'.