The need to open a port for a specific application arises when the program used is not in the list of allowed or when playing on the network. The port opening procedure does not require special knowledge or the involvement of additional software.
Click the "Start" button to bring up the main menu and go to the "Control Panel" item to initiate the port opening procedure (for Windows 7).
Enter "firewall" in the search bar and select the "Windows Firewall" node (for Windows 7).
Expand the Advanced Settings link on the left side of the application window and enter the computer administrator password in the appropriate field when prompted (for Windows 7).
Select the Inbound Rules section on the left side of the Windows Firewall with Advanced Security dialog box that opens and select New Rule on the right side of the window to launch the New Inbound Rule Wizard (for Windows 7) …
Follow the instructions of the wizard (for Windows 7).
Click the "Start" button to bring up the main menu of the system and go to the "Control Panel" item to perform the operation of opening a sweat in the Windows Vista operating system.
Select Security and go to Windows Firewall (for Windows Vista).
Select the Allow programs to run through Windows Firewall node and confirm your authority to carry out the operation by entering the computer administrator password in the appropriate field in the system prompt window that opens (for Windows Vista).
Click the Add Port button and enter the desired name in the appropriate field (for Windows Vista).
Enter the number of the selected port in the "Port" field and specify the required Internet protocol (for Windows Vista).
Use the Change Scope button to determine whether multiple computers can access the selected port (for Windows Vista).