Free firewall inside every Linux box

CNet’s Linux lab has an article about article about using Linux computers as router/firewall appliances. “You have a choice. You can spend thousands of dollars to protect your Linux network by controlling what flows in and out
of it–or you can spend nothing.

The advantages of always-on broadband Internet connections are clear: they’re fast, inexpensive, and convenient. The
dangers aren’t as apparent. Without the proper safeguards, the constant connection can put your company’s servers and
data at risk.”