The solution to the problem of checking the port availability in the Microsoft Windows 7 operating system can be found in the use of the Microsoft Telnet client, which allows you to establish a TCP connection to the local host 127.0.0.1 through the port to be checked.
Instructions
Step 1
Call the main menu of the Microsoft Windows 7 operating system by clicking the "Start" button and specify the telnet value in the search bar field to perform the client launch operation.
Step 2
Click the "Find" button and call the context menu of the found element telnet.exe by right-clicking.
Step 3
Specify the "Run as administrator" command and confirm your choice in the "User Account Control" request window that opens by clicking the "Yes" button.
Step 4
Specify the value of the administrator password in the system request window that appears to confirm your authority, or use an alternative method to start the client.
Step 5
Call the main menu of the operating system by clicking the "Start" button and specify the value of cmd.exe in the text field of the search string.
Step 6
Press the "Find" button and call the context menu of the found element by clicking the right mouse button.
Step 7
Specify the command "Run as administrator" and confirm your choice by entering the password value in the system prompt window that opens.
Step 8
Enter telnet in the command line text box and press the Enter function key to confirm the command.
Step 9
Enter the value o or open 127.0.0.1 in the opened window of the Microsoft Telnet client command interpreter and confirm the command execution by pressing the Enter function key.
Step 10
Wait until the client window clears (if a connection is established) or a message appears stating that the connection cannot be established (if the local port to be checked is unavailable) and use the following commands to determine the required parameters:
-? / h - to get help;
- s - to end an active connection;
- u - to reset the parameters;
- d - to display parameters;
- st - to display the current state;
- o port_number - to connect to the selected port;
- sen - to send the selected line to the server;
- q - to terminate the client's work;
- set - to define the required parameters.
