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But if the firewall keeps "replying" they'll keep coming back hoping that one day they'll be able to get in. A firewall that sends back any kind of answer, even if it's to say that it didn't allow the connection, is telling the other side that there is someone living at that address. What you need is a real secure firewall that will block the connection attempt and will NOT send anything back.
Do the port scan and the leak test, even if they're somewhat old, it still works.
Missie
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