On Dec 8, 2010, at 7:28 PM, Arturo Servin wrote:

>       One big problem (IMHO) of DDoS is that sources (the host of botnets) 
> may be completely unaware that they are part of a DDoS. I do not mean the bot 
> machine, I mean the ISP connecting those.

The technology exists to detect and classify this attack traffic, and is 
deployed in production networks today.

And of course, the legitimate owners of the botted hosts are generally unaware 
that their machine is being used for nefarious purposes.

>       In the other hand the target of a DDoS cannot do anything to stop to 
> attack besides adding more BW or contacting one by one the whole path of 
> providers to try to minimize the effect.

Actually, there're lots of things they can do.

>       I know that this has many security concerns, but would it be good a 
> signalling protocol between ISPs to inform the sources of a DDoS attack in 
> order to take semiautomatic actions to rate-limit the traffic as close as the 
> source? Of course that this is more complex that these three or two lines, 
> but I wonder if this has been considerer in the past.

It already exists.

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Roland Dobbins <[email protected]> // <http://www.arbornetworks.com>

               Sell your computer and buy a guitar.





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