Mitigating DDoS attack and Saving Computational Time using a Probabilistic approach and HCF method

This paper discusses the mitigation of Distributed Denial of Service (DDoS) attack and as well preservation of computational time on wireless network. The DDoS effects upon the QoS in the loss of bandwidth and the resources available at the server. The uncertainty of Distributed denial of Service attack can be best simulated with the help of probabilistic model. The simple hop count method was used to calculate the hop count from the Time-To-Live (TTL) field of each packet. In this approach calculation of hop count for each packet is not required to detect the malicious packet. The number of packet we need to examine depends upon the probabilistic approach. This method mitigates the DDoS attack by reducing computational time and memory during the processing of a packet.