What is the best free firewall that will not drain your resources?
Somthing that wont overtask your cpu?

Well it depends on your system greatly, but i use sygate for my firewall, works well never had a problem with it. On the other hand lots of people seem to like zonealaram. In my opinion they're both a good software firewall, if you can get a router go for it.

Here are the links for sygate and zonealaram
http://soho.sygate.com/free/default.php and http://www.zonelabs.com/store/content/home.jsp

another FREE one is tiny personal firewall
http://www.tinysoftware.com
recommended by cexx.org

oh ok i havent heard of it before, will check it out ty

oh and its zonealarm, my mistake, grr at spelling...

You can edit your own posts snoopy

I use Agnitum Outpost Firewall freeware
http://www.agnitum.com

i am an avid user of neowatch, its not freeware unfortunately

If you are interested in testing your firewall with a basic security test go here https://grc.com/x/ne.dll?bh0bkyd2 and also http://www.dslreports.com/tools