The Microsoft Windows XP Home Edition operating system includes several features intended to protect the security of your PC computer. One of the most effective security tools is the Windows Firewall, which will block outside users from being able to access your system and files. If you are an administrator on your computer, you can enable the Windows Firewall.
Log on to your PC computer with an account that has administrative privileges. Only administrators can control security features in the Windows operating system.
Click "Start," then "Control Panel."
Click "Switch to Classic View" link on the left side of the window if you are not already viewing the control panel in Classic View.
Double-click on the "Windows Firewall" control panel icon.
Go to the "General" tab at the top of the window.
Select the radio button next to "On (Recommended)," but make sure the "Don't allow exceptions" option is not checked. Enabling this option could impair the performance of some of your computer's programs.
Click "OK" to save the settings and enable the Windows Firewall.
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