Windows does have a firewall, maybe it is disabled?

But, a good free internet suite is Comodo Internet Security -
here's a page of their free software -
http://www.comodo.com/home/free/free...key1sk2=Google

oh they have a new browser listed too-
I'm going to try it out.
Comodo IceDragon Browser

[Which should I choose: Comodo Dragon or Comodo IceDragon?
The choice is yours! Both versions of Dragon feature security and privacy improvements over the originals and both feature additional Comodo tools and services. Our goal is to offer a secure, feature-enhanced alternative to both Chromium and Firefox user-bases while retaining the benefits and user experience of the original browsers. If you prefer FireFox, try IceDragon. If Chrome is the browser for you, then why not give Dragon a whirl?]