Windows XP SP2 - Firewall - Microsoft Security

•	What is a firewall
•	What are operating system updates
•	What is antivirus software
•	What is antispyware software

Windows XP Service Pack 2 (SP2): How to turn on your firewall

Windows XP SP2 comes with Windows Firewall automatically turned on. For more information about Windows Firewall, see Understanding Windows Firewall in Windows XP SP2.

For a managed, two-way firewall, try Windows Live OneCare free for 90 days.

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•	Using Windows Firewall
•	5 reasons to use Windows Live OneCare to help protect your computer