Posted: 6 Jan 2008 21:36
Fwknop uses Single Packet Authorization. The idea is to ask the server to open port 22 once a secret password is provided.
In this fashion, port 22 is effectively disabled until someone "knocks". This extra layer of security would make 0-day exploits much more difficult.
It would be great if port-knocking could be added into existing SSL-based software.
Joined: 10 Dec 2002
Location: Prague, Czech republic
Posted: 7 Jan 2008
This issue has been added to tracker.
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