Also, if you are going to use a software firewall, do use a decent one. Zonealarm and Norton products are practically legendary for being shit. Comodo is still my personal favorite, although I feel that it is largely unnecessary these days. Eset's Smart Security Suite is supposed to be quite nice as well.
Windows firewall only blocks inbound connections, not outbound.
So if you download something that's a trojan, it's free to connect back to it's
That being said, if you're cautious and have a router with nat then a software firewall
isn't really necessary imo.
Years ago. I've (and kajillions of other IT techs) seen so many PCs hosed by ZA, and it's a pain to fully clean out.