Telnet test port is open correctly

2. Click on the computer's Start menu-run, enter the cmd command, and then OK. Open the cmd command line.

4. Enter Telnet test port command: Telnet IP port or Telnet domain port

   Enter

6. If the port is closed or unable to connect, display a link that cannot be opened to the host, and the link fails

8. When the port is open, the link succeeds, then it goes to the Telnet page (All Black), proving that the port is available

10. The Telnet client commands a common command:

    Open: Use Openhostname to establish a Telnet connection to the host.

    Close: Use the command Close command to close an existing Telnet connection.

    Display: Use the display command to view the current settings of the Telnet client.

    Send: Use the Send command to send commands to the Telnet server. The following commands are supported:

    AO: Discards the output command.

    Ayt: "Is You There" command.

    ESC: Sends the current escape character.

    IP: Interrupt process command.

    Synch: Performs a Telnet synchronization operation.

    BRK: Sends a signal.

    Commands other than those listed in the previous table are sent as strings to the Telnet server. For example, SENDABCD will send the string ABCD to the Telnet server, so that the string will appear in the Telnet session window.

    Quit

    Use the QUIT command to exit the Telnet client.

Telnet test port is open correctly