Guide to Firewall Software and Services

Choose a dedicated firewall application

Make sure that the version you want runs on your PC, and look for an application that monitors both inbound and outbound traffic.

I recommend: Norton Internet Security is a top-of-the-line software bundle that includes firewall protection and can also protect your business against viruses, hackers, spyware and spam. Also check out PCMag.com's Firewall Security Software, TheFirewallGuide.com and ConsumerSearch.com's Firewalls guide. You can see more on PC security in PC World's "Bigger Threats, Better Defense."

Choose a free firewall application

Windows XP with Service Pack 2 comes with a basic built-in firewall, as does Mac OS X, but other free options are available.

I recommend: Check out the popular ZoneAlarm or others at Symantec. Freebyte's Guide to Free Anti-Virus Software.

Choose a firewall service

If you have a larger business with many PCs, you may want to choose a robust solution.

I recommend: McAfee and Symantec offer a wide range of computer security solutions for home office and small business. If you have a larger business with many Internet-connected PCs, you might want to hire an IT consultant to help you find the right managed service. Check out Geeks on Call or GeeksOnTime.

Get the right hardware

If you have an office network, consider a hardware-based firewall, which is typically found in broadband routers.

I recommend: Check out Webopedia.com's article "The Differences and Features of Hardware & Software Firewalls" for more details.