How to choose a firewall

Three basic types of firewalls are available for you to choose from:

To determine which type of firewall is best for you, answer these questions and record your answers:

That's it. You are now ready to think about what type of firewall you want to use. There are several options, each with its own pros and cons.

Windows Firewall (Windows Vista and Windows XP Service Pack 2 only)

If you use Windows Vista or Windows XP Service Pack 2 (SP2), you have a firewall built in and turned on by default.

To learn more about the Windows Firewall that comes with Windows Vista and Windows XP SP2, read Understanding Windows Firewall.

Tip:  If you haven't downloaded Service Pack 2, visit Microsoft Update to learn how to get it.

If you are using Windows XP and you choose not to download Service Pack 2, you still have access to the Internet Connection Firewall (ICF) that's built into Windows XP, but you need to turn it on.

Note: The Windows Firewall and the Internet Connection Firewall are not available as a stand-alone package. They are also not available for other operating systems (for example, Apple Macintosh or Linux) or for versions of Windows other than Windows Vista and Windows XP.

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Windows Live OneCare

Windows Live OneCare is a comprehensive security service that includes an additional firewall. The Windows Live OneCare firewall is a two-way managed firewall. This means that both inbound and outbound traffic is controlled. The firewall is also updated continually to help protect you.

To learn more, read 5 reasons to use Windows Live OneCare to help protect your computer or Try Windows Live OneCare free for 90 days.

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Software firewalls

Software firewalls are a good choice for single computers, and they work well with Windows 98, Windows Me, and Windows 2000. (Windows Vista and Windows XP both have a built-in firewall, so an additional firewall is not necessary.)

Software firewalls are available from other software companies. For special offers on antivirus and firewall packages, visit our Security software: Downloads and trials page.

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Hardware routers

Hardware routers are a good choice for home networks that will connect to the Internet.

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Wireless routers

If you have or plann to use a wireless network, you need a wireless router.

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Start using a firewall today

Connecting to the Internet can pose dangers to unwary computer users. Use a firewall to help reduce your risk.

Installing a firewall is just the first step toward safe surfing online. You can continue to improve your computer's security by keeping your software up to date, using antivirus software, and using antispyware software. Learn more about steps you can take to help protect your computer.

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