How to Configure the Windows XP Firewall Ports
Windows Firewall offers users of the Windows XP, Vista and 7 operating systems built-in protection against hackers and other intrusion attempts. This program blocks many ports on a computer from being used, which keeps programs from accessing the Internet or being accessed from the Internet. You can configure settings for these ports so that certain programs are allowed or disallowed to access the Internet, based on your personal preferences. You don't have to be a computer expert to do this, but it helps if you are familiar with the basics of computers.
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Instructions
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Open Windows Firewall by clicking "Start," opening the Control Panel and opening the Windows Firewall section of the Control Panel.
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Click on "Allow a program through Windows Firewall."
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Allow a program through Windows Firewall by clicking the "Add port" button and adding the program to the allowed list. To disallow a program from going through the Windows Firewall, uncheck the box next to its name in the Allow Programs list.
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Click "OK" to close the configuration window and apply the changes you have made to the Windows Firewall configuration.
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Tips & Warnings
Allowing programs that you don't know or recognize through your firewall can be a security risk, so use caution when configuring the Windows XP firewall.
