Priority Queue-Based Scheme to Maintain Quality of Service for Normal Users Suffering from Large DDoS Attacks

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Executive Summary

In this paper, the authors focus on alleviating malicious traffic from DDoS attacks since many famous websites have been attacked by them and massive losses have been reported in recent years. They propose a Priority Queue-Based scheme to analyze the interval of the arrival times of incoming packets in order to distinguish malicious traffic from normal traffic and to take care of malicious attacks clogging the network. They use the network simulator, NS2, to assess the efficiency of the proposed scheme. Simulation results show that the proposed Priority Queue-based scheme not only effectively decreases the flows of malicious packets from DDoS attacks with various packet rates, but also provides smooth and constant flows for packets sent by normal users.

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