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. > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >