Network Security Journal: Types of Firewalls

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Software or hardware? The firewall you choose will depend on your business needs.

By Michael Goodwin
May 25th, 2007

Some of the most powerful firewall software on the market is designed to run on an ordinary computer — probably a dedicated server if you're securing a large network. Other firewall software is designed to run on proprietary hardware that you have to buy along with the software, turning the bundle into a "security appliance." As a general rule, appliances are faster, easier to install and operate — and also more expensive. But there's no guarantee that an appliance will do a better job than a software-only firewall. Software firewalls tend to be more flexible, and it's easier to upgrade the hardware it's running on.

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