Countering DoS attacks with stateless multipath overlays
Proceedings of the 12th ACM conference on Computer and communications security
Impeding attrition attacks in P2P systems
Proceedings of the 11th workshop on ACM SIGOPS European workshop
Popularity adaptive search in hybrid P2P systems
Journal of Parallel and Distributed Computing
A2M: Access-Assured Mobile Desktop Computing
ISC '09 Proceedings of the 12th International Conference on Information Security
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Distributed Denial of Service (DDoS) attacks are currently major threats to communication in the Internet. A secure overlay services (SOS) architecture has been proposed to provide reliable communication between clients and a target under DDoS attacks. The SOS architecture employs a set of overlay nodes arranged in three hierarchical layers that controls access to the target. Although the architecture is novel and works well under simple congestion based attacks, we observe that it is vulnerable under more intelligent attacks. We generalize the SOS architecture by introducing more flexibility in layering to the original architecture. We define two intelligent DDoS attack models and develop an analytical approach to study the impacts of the number of layers, number of neighbors per node and thenode distribution per layer on the system performance under these two attack models. Our data clearly demonstrate that performance is indeed sensitive to the design features and the different design features interact with each other to impact overall system performance.