My Research


I did my Masters research on overlay networks with the Tapestry branch of the Oceanstore group at UC Berkeley.  My research centered on Denial of Service (DoS) attacks in Peer-to-Peer (P2P) overlay networks.  My approach involves leveraging the properties of P2P overlay networks, and detecting and defending against DoS attacks in a distributed way.



Denial of service (DoS) attacks are a large and increasing threat to the Internet community. In this paper, we propose using a distributed approach to DoS defense. Our architecture leverages the properties of a wide-area overlay network to isolate clusters of attackers while denying access to a minimal amount of legitimate users. This is done by collaborating with other members of a structured peer to peer network, which is inherently collaborative. Our results show that such our approach is effective at both detection and suppression of a DoS attack.

[ Paper:PDF (874K), Postscript (2.3M), Compressed Postscript (358K) ]

Email: pete at


Oceanstore Website


Oceanstore Papers


My Paper on Oceanstore




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