Just now I downloaded the latest version of Gibson Research Corporation's "Leaktest" from http://www.grc.com/lt/leaktest.htm. This is a free firewall leakage tester. Afterwards I used it to test the firewall of ESS 630, but unfortunately it did not pass the test, as it was able to penetrate the firewall . There must be a way to block this test utility, but I was unable to. Has anyone else tried this? Previously I used ZoneAlarm Pro and this firewall passed this test perfectly. GRC also offers another test on it's web site: ShieldsUP! which is the Internet's quickest, most popular, reliable and trusted, free Internet security checkup and information service. And now in its Port Authority Edition, it's also the most powerful and complete. This test can be found on: http://www.grc.com/intro.htm that way you can check any of your Windows File Sharing and Internet port vulnerabilities. When I used this test on my common ports ESS 630 passed with flying colour, which was quite reassuring to me.