Windows firewalls

[Joe Brouhard]

Okay I know this is a bit off topic, and probably get me flammed...

i have a friend who runs a Windows server (no, there is no way to 
convert to linux as she's using a hosted box.  App is also locked to 
Win32, so...) and it's routinely hit by portscanners and has been hacked 
at least twice now.

Anyone know of *GOOD* and *DECENT* Firewalls?  Anything but Zonealarm.. 
it sucks balls.

She's also not really in the mood to pay for the software, so i'mlooking 
for opensource options.

i was thinking of an IPtables solution, but i don't think the host will 
allow cgywin installed on the box.

Thanks in advance

Joe Brouhard
jbrouhard at chansata.com