I just loaded Linux on a new box which responds to ShieldsUP!
differently from my old. I'm not advocating the product, but my old box
would pass the test with all ports reported as stealth. However, my new
box reports three ports as closed, and fails the test.
This is identical to running the test on my new cable modem which came
without transparent bridging enabled and used its own firewall. Is
there something in new boxes that does something similar?
So as to not rely on my memory I installed the same Linux on my old box
and all ports reported as all stealth.