Beware of the thread ...
http://slashdot.org/it/04/02/05/1834228.shtml?tid=126&tid=172
on Slashdot regarding Port Knocking - there are some good
points, but loads and loads of misinformation and uninformed
whining about Port Knocking lowering your overall level of
security.
Regards,
MrKiwi
John R Pierce wrote:
MrKiwi wrote:
Oh my ... im not a policeman, but that may have been a freudian slip?
I meant "Port Knocking", and i have no idea what "Pork Knocking" is,
although it does sound like an old english sport of the common people?
in a nutshell, your server listens for a special packet on a arbitrary
port, then allows the source IP of that packet to make a connection on
another port. for instance, a UDP packet to port 3515 with a specific
payload, and you then open up SSH on 22 to the source of that UDP for
the next 10 seconds or whatever.
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