Click the "proceed" button on this link page to get to the testing page -
https://www.grc.com/x/ne.dll?bh0bkyd2

On the testing page the various test buttons are located in the blue center section and the buttons are a silver/gray. The buttons are kind of run together in a line, but hover your cursor over them and it will change when over the words.


Frequently Asked Questions-
http://www.grc.com/faq-shieldsup.htm

It's interesting to know how well you are protected, or not.

mine passed {Zone Alarm Extreme}