From: Nicolas RUFF (nicolas.ruff@gmail.com)
Date: Mon Oct 09 2006 - 02:48:31 EDT
I am not a Bittorrent expert, I rather studied eDonkey/eMule network.
It seems to me that the ed2k protocol could be used for DDoS attacks,
especially if you set up your own "hostile" server. With 100,000+
clients connected to your server, you just have to add a specific
"ip:port" combination as source for any incoming request.
This kind of attack looks very "promising", for it leaves no track: the
protocol is widely used, and the client is "legit".
I gave a talk on the subject in May, unfortunately it is in French only:
http://www.ossir.org/jssi/jssi2006/supports/3B.pdf
Another possibility would be to advertise someone as a Kazaa or Skype
supernode ... It would require a deep understanding of their proprietary
protocol, though :)
Regards,
- Nicolas RUFF
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