First...you get what you pay for. I wouldn't trust a "free" firewall..not with my server...but that's me. I will install SP1 on my new server shortly...and I'll be able to share more then. There is another way of doing this...you can setup a firewall using NAT.
Sadly..that article assumes you are not new to the server..and know what all those options mean...which I did not. My book even failed me...so I had to go to Microsoft. I've found these two articles to be of great help:
This covers a ton of stuff that first article assumes you already know. If you don't...that presents quite a problem!
There are other links on this page that are helpful about learning all about Win 2003. I'm glad Microsoft seems to be trying to organize their online resources a little better these days...even though they would prefer you spend a couple hundred on deadtrees(tm).
>> Oh. I forgot a very important link. If you really want some wonderful tech backgrouders and overviews...you need to go here:
When configured properly the fw that comes with 2003 is fine. Most exploited windows boxes I've worked on recently were compromised via other software misconfigurations. FTP and IIS being the 2 big ones. FW matters not a jot if your webserver or ftp are what get you owned.