International Journal of Modern Engineering Research (IJMER)
A major threat to the internet is that the Distributed Denial-of-Service (DDoS) attacks. There is no efficient way to trace back the attackers because of memoryless feature of routers. In this paper, trace back of the attackers in a wireless networks are efficiently identified and also to protect the data from the attackers using entropy variations. In the existing system, some approaches have been suggested to identify the attackers such as Probabilistic Packet Marking (PPM), Deterministic Packet Marking (DPM). These two approaches are not efficient because it requires injecting marks into individual packets in order to trace back the attackers. In PPM, it can only operate in a local range of internet.