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DDoS avoidance strategy for service availability

Abstract:

Defending from DDoS attacks have become more difficult because they have evolved in many ways. Absence of a specific predetermined pattern, increase of number of attack devices, and distributed execution of the DDoS attack makes hard the recognition of the attack sources and thus application of countermeasures. When the DDoS attack is being executed, most of the cases, the target cannot provide its services normally; this is not a significant problem for non-critical application, but, for availability critical services such as stock financial, stock market, or governmental, the effect of the attack may involve huge damage. In this paper, we propose a DDoS avoidance strategy to provide service availability to those preregistered important users. In the proposed strategy, we divide the attack scenario in different time points and provide alternative access channels to already authenticated and other valid users. © 2011 Springer Science+Business Media, LLC.