Improving Distributed Denial of Service (DDOS) Attack Detection Performance using Priority Queuing

Y. Rebahi, J. J. Pallares, D. Vingarzan, F. Gouveia, T. Magedanz, Andreea Ancuta Onofrei


Distributed Denial of Service (DDoS) attacks are a major threat for the deployment of SIP-based VoIP networks. Various solutions have been suggested to mitigate the impact of these attacks, each bringing its advantages and disadvantages. Classifying the SIP-based VoIP traffic into different queues according to the suspiciousness of the traffic, can be an efficient solution if it is correctly implemented. Unfortu-nately, adding queues to the SIP servers affects severely its performance. The current paper suggests a mechanism called “virtual queuing” that implements a priority queue on a SIP server while keeping its performance at its best.
Keywords: DDoS attacks, Prioritization, Queuing, Scheduling Algorithm.

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