How to use telnet?

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How to use telnet?

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Telnet is a command to test whether the port is opened successfully.

1). Press ‘windows +R’ on the keyboard, input ’CMD’ in the Run Window;

2). Input Telnet IP address port, such as Telnet 8062

3). The result is as follows: it means connection is successful when popping up the black screen.

4). A message says ‘Could not open connection to the host on port 8063’.

User should check or modify the port.