Microsoft included a firewall in Windows XP to keep you safe from hackers while you cruise the Internet. How do you know that the Internet Connection Firewall is on? Go to the Control Panel and double-click the Network Connections icon. In the dial-up, DSL, or cable connection dialog that appears, check the Status column. If your firewall is on, it should say Firewalled. You can turn the firewall off with the check box, but unless you are going to add a third-party firewall for heightened security, it's best to leave it on.
Now that you know that your firewall is on, how do you know that it's doing its job? Test it with ShieldsUp, the free testing service sponsored by Gibson Research. According to our tests, XP's Internet Connection Firewall kept the computer in full stealth mode. Hackers could not break in and couldn't even see the computer online.
But, given the latest security problems with USB 2.0, etc, you should always go to
Windows Update to make sure you have the latest patches, no matter what operating system you use.
