Download XP Firewall Commander
XP Firewall Commander is a friendly user software ready to be installed in your computer. It will protect and detect any suspicious behavior in your network traffic.
It will configure automatically but if you want extra protection you can configure it yourself and create a filter of the applications that are OK to run through your system and which ones are not. You can surf the Internet without any problems either you configure it or not.
Its compatible with Windows Operating Systems and the best of all is that is, not only free, but one more powerful firewalls in the market.