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Knock, Knock, Knock
Kelly Martin, 2004-02-20

If hundreds of thousands of people are still blindly clicking on attachments in their email, is there any hope of mitigating the threat of hundreds of thousands of compromised systems with open backdoors?

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Ok Double Sided Swords 2004-02-21
Anonymous
Port Knocking is also used on linux systems to hide open ports to reduce the chance of attacker finding the open port to attack.
This can be a smtp or a pop or some other protected server hiding behind ssl that you don't want anyone to see all the time.

This could be a responce to worms hunting ...

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