"Distributed Denial-of-Service (DDoS) attacks are a critical threat to the Internet. However, the memoryless feature of the Internet routing mechanisms makes it extremely hard to trace back to the source of these attacks," scientists writing in the journal IEEE Transactions on Parallel and Distributed Systems report.
"As a result, there is no effective and efficient method to deal with this issue so far. In this paper, we propose a novel traceback method for DDoS attacks that is based on entropy variations between normal and DDoS attack traffic, which is fundamentally different from commonly used packet marking techniques. In comparison to the existing DDoS traceback methods, the proposed strategy possesses a number of advantages-it is memory nonintensive, efficiently scalable, robust against packet pollution, and independent of attack traffic patterns. The results of extensive experimental and simulation studies are presented to demonstrate the effectiveness and efficiency of the proposed method," wrote S. Yu and colleagues.
The researchers concluded: "Our experiments show that accurate traceback is possible within 20 seconds (approximately) in a large-scale attack network with thousands of zombies."
Yu and colleagues published their study in IEEE Transactions on Parallel and Distributed Systems (Traceback of DDoS Attacks Using Entropy Variations. IEEE Transactions on Parallel and Distributed Systems, 2011;22(3):412-425).
Additional information can be obtained by contacting S. Yu, Deakin University, School Informat Technology, Burwood, Vic 3125, Australia.
The publisher of the journal IEEE Transactions on Parallel and Distributed Systems can be contacted at: IEEE Computer Society, 10662 Los Vaqueros Circle, PO Box 3014, Los Alamitos, CA 90720-1314, USA.
Keywords: City:Burwood, Country:Australia, Internet Routing, Parallel and Distributed Systems, World Wide Web
This article was prepared by Computer Weekly News editors from staff and other reports. Copyright 2011, Computer Weekly News via VerticalNews.com.

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