Best Free firewall for Windows 2003 Server

[DarkTXKnight]

Ok, so I would like to find something that works as nicely as Kerio 215 but on the Windows 2003 platform. The Kerio FW bluescreens my server boxes and I would like something that pops up on the screen when it detects an intrusion attemp like Kerio. if it's free, then even better
Any suggestions?

 

[sgleo87]

Zone alarm free edition http://www.zonelabs.com/store/content/company/products/znalm/freeDownload.jsp