Opinions expressed by Entrepreneur contributors are their own. It seems like every day we hear of a computer security breach in the news: A hacker who has stolen records from one company or another; ...

Windows XP comes with a built-in firewall called Windows Firewall. For people who do not want to spend the money on a commercial software firewall, this firewall will be more than enough to protect ...

Firewalls, both hardware and software, protect computers from hackers and other online threats by blocking dangerous pieces of data from reaching the system. While hardware firewalls offer ...

Every organization that connects its network to the Internet needs a firewall to protect against intrusions and attacks from "out there." And today's security vendors make firewall products to fit ...

Some operating systems have a firewall built into the kernel. There are hardware-based firmware firewalls in your modems and routers. And then there are several third-party hardware and software ...