Did you download the IP Agent software from the GRC site Mustapha?
For the most reliable results you are
invited to use our FREE IP Agent:
The ShieldsUP! tests depend upon accurately determining your computer's Internet Protocol (IP) address. If your IP address is incorrectly determined the wrong machine will be mistakenly tested. In addition, computers with multiple network connections ? like a modem and a network adapter ? can have more than one IP address. And machines with only one IP address can have it effectively "hidden" or "masqueraded" if the connection passes through any sort of firewall, proxy server, or other buffering agent.
IP Agent easily manages all such complications. It determines your machine's current IP address ? or addresses ? then contacts this ShieldsUP! website for you. If your machine had a single IP address you'll be taken right to the main ShieldsUP! page. If more than one IP address was found you'll be able to choose among the available addresses.
As far as I know, if your ports are closed, they are not vulnerable to hacking. It is possible that because the ports are visible on the net (as opposed to stealthed) your IP will attract more "attention" than otherwise, simply because the hackers know there is a computer there.
It's entirely possible that your router only closes ports and doesn't stealth them
Have you tried the tests at
www.pcflank.com BTW?