Start the Built-in Firewall in Windows XP
1. Through the Start menu select the "Control Panel" menu item.
2. Select the "Network and Internet Connections" item.
3. Select the "Windows Firewall" icon.
4. If it is not already checked, check the "On (recommended)" radio button.
5. Click the "OK" button to make your firewall active.
|Use the toolbar at the bottom to pause, rewind, and forward the video. [about this video]|