A paper describing several attacks on Kad is available at http://www-users.cs.umn.edu/~kyd/node/150. This, I believe, is the first experimental results on live P2P network showing that one could shut down 1.5 million DHT network within one hour. We had few experiments showing the cost of generic Sybil attack as well. Some of our attacks are prevented in the new version of Kad.
Cheers, Yongdae On Wed, Aug 27, 2008 at 11:00 AM, <[EMAIL PROTECTED]> wrote: > Send p2p-hackers mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.zooko.com/mailman/listinfo/p2p-hackers > or, via email, send a message with subject or body 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of p2p-hackers digest..." > > > Today's Topics: > > 1. Re: aMule/eMule's solution for Sybil Attack (Stephane Bortzmeyer) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 27 Aug 2008 11:37:25 +0200 > From: Stephane Bortzmeyer <[EMAIL PROTECTED]> > Subject: Re: [p2p-hackers] aMule/eMule's solution for Sybil Attack > To: theory and practice of decentralized computer networks > <[email protected]> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=us-ascii > >> - Kad will now enforce certain limits when adding new contacts to the >> routing table: No more than 1 KadNode per IP, 2 similar KadNodes (same >> bin) >> from a /24 network and at a maximum 10 different KadNodes from a /24 >> network >> are allowed. This is supposed to make routing attacks against Kad more >> difficult and resource-intensive. > > Not very interesting because it is limited to IPv4. With IPv6, rules > like "No more than 1 KadNode per IP" are almost useless. > > > ------------------------------ > > _______________________________________________ > p2p-hackers mailing list > [email protected] > http://lists.zooko.com/mailman/listinfo/p2p-hackers > > > End of p2p-hackers Digest, Vol 27, Issue 24 > ******************************************* > -- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + Yongdae Kim (office phone) 1-612-626-7526 + Assistant Professor, University of Minnesota - Twin Cities + kyd (at mark) cs.umn.edu, http://www.cs.umn.edu/~kyd +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers
