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ShieldsUP! Strange Results March 15, 2011

Posted by Robert Harder in Utility.
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ShieldsUP! from Steve Gibson is a great service that helps you assess your computer’s protection on the Internet. Debugging some recent router troubles, I tried turning on DMZ mode, which redirected all incoming traffic to a Mac (OS X 10.6.6) on my network. I was surprised to see the striped pattern below:

Now that’s weird. Could it be some kind of reactive firewall technique on the Mac? I don’t know, but it’s a pattern, and that certainly caught me off guard.

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