Test Your Computer’s Firewall Online
Firewalls exist for the reason that they shoudn’t allow bad stuff to happen to your system by monitoring all inbound and outbound internet traffic.
Here is a free and quick way to test whether your system is really secure as you think it is because of the firewall you have :
1. Go to www.grc.com and click the Shields Up logo.
2. Scroll down to the Hot Spots zone and click on the Shields Up link...