Also, where can I download it?
Chosen Answer:
If it’s just a firewall you want.The best free is Comodo from File Hippo.
In fact it’s better than Norton and the rest.
by:
on: 3rd July 09
Can anyone recommend a free Firewall program for WindowsVista, other than ZoneAlarm that is free to download.?
August 5th, 2012 
Zonealarm 
Posted in Zonealarm FAQ 
Tags: also, anyone, chosen, comodo, download, fact, file, firewall, free, hippo, july, norton, program, recommend, wantthe, windowsvista, zonealarm
norton anti virus
Go to cnet.com. They have all kinds of free downloads.
If it’s just a firewall you want.The best free is Comodo from File Hippo.
In fact it’s better than Norton and the rest.
i have Avg free 0.8 it is really good. it does the job without sucking the life out of your comi which i found norton did.
http://www.grisoft.com : for av8 free 0.8
also try these if you dont like AVG
ESET NOD32
http://www.eset.com
Avast
http://www.avast.com
Spyware Doctor
http://www.pctools.com/spyware-doctor/
sorry just realised i answered it about virus protection rather than firwall, you still might find them usefull.
on windows vista they a built in firewall