[CentOS] Defending againts simultanious attacks - Port Knocking

On Sat, Feb 17, 2007 13:34:39 PM +1300, MrKiwi (mrkiwi at gmail.com)
wrote:

> 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.

May we ask you to sum up in a few lines both the good points and the
misinformed/whining ones?

Thank you in advance,

	Marco

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