Windows XP Service Pack 2 and Service Pack 3 have a built-in firewall. This document will show you how to start or stop the firewall. If your computer has Service Pack 2 or Service Pack 3 installed the firewall will be turned on by default.
NOTE: Windows 95/98, Windows Me, Windows 2000, Windows XP, and Windows Vista are no longer supported by the Help Desk. We can only provide best effort support. If we are unable to resolve your Windows 9x/2000/XP/Vista issue, you may be able to find help in Microsoft's Knowledge Base.
These products are no longer actively supported by Microsoft. No further development will take place on these products and security updates are no longer issued. It is highly recommended that you upgrade to Windows 10, 8, or 7.
To open the Firewall control panel: