A firewall prevents outside users from connecting to your computer and obtaining personal information without your permission.

A firewall will keep track of all communications from and to your computer, and it prevents unsolicited traffic from reaching your computer. For example, if you have a wireless connection, a firewall will warn you if someone else is attempting to use your connection. If you have a Broadband connection you are strongly advised to install a firewall immediately.

If you run Windows XP or Vista, there is a firewall included in the operating system. You can change the settings by going to the Security Centre from the Control Panel.

Many Virus Protection programs also include a Firewall; others can be downloaded for free from the Internet.

You can learn more about protecting your computer from these threats:

• www.firewallguide.com

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