http://www.linksys.com/products/product.asp?prid=20&grid=5

this is the one I have attached to my computer"S". The Firewall is pretty solid. There is an internet site that I went to one time and it attempts to enter your computer to see how safe your online connection is. It could not enter my system according to the results.

With this unit hooked up all computers networked to it have instant internet access. I've not noted any depreciation in speed from computer to computer while running on the internet.

There have been some drawbacks. I've not been able to use Netmeeting or Video conferencing with it hooked up.

I only wish I had gotten the newer 8 port unit.