Hi, I've been wondering, Do I need to download any software firewall in my PC? If yes, can anyone tell any good and free software firewall downloads? thanks!

My router has a firewall which should protect my PC's so I just run the standard Windows FW (which is pretty basic). If you want something extra, Online Armor is supposed to be good:
http://www.online-armor.com/

Zone Alarm free is another popular one.

Comodo and Sunbelt are two very good choices

Cool..

Alright, thanks guys!

Useful information, I will consider which one I should install on my PC.

Cool! I'm glad this thread helped out!

Alright guys. I downloaded the Sunbelt that Jobeard recommended. Does a a sofware firewall slow down a pc?

http://www.sunbeltsoftware.com/Home-Home-Office/Sunbelt-Personal-Firewall/

The website states that it does not slow down your computer.

Any that really are worth keeping do not. Comodo & Sunbelt have light weight processing while some of the B I G boys, eg Norton are really poor imo.

Question for the OP - What OS are you running? (xp, vista, win7) and what version (32bit, 64bit, home, pro, ultimate, etc)
The answer could affect some recommendations.

Running XP (32bit) I prefer Online Armor.
I have tried and also like Comodo, just like OA better.
I do not recommend ZA, though I used to,
and some I know run it still - based on my earlier recommendation.
I find ZA to be too much of a hog.

I've noticed that Sunbelt won't allow me to update Malwarebyte's unless I i disable the firewall. Other than that, Sunbelt is pretty ok.

that's a configuration issue - - I can update anything and use SPF on my laptop.
make sure you allow PORTS 80,443 TCP IN/OUT SRC=ANY

hi.

Hold on, how do I enable those?