Detection and Prevention of DOS Attacks Using Preventive Approach

Abstract

Each node in a MANET is capable of acting as a router. Routing is one of the aspects having various security concerns. In this paper, we will present survey of common Denial-of-Service (DoS) attacks on network layer namely Wormhole attack, Black hole attack and Gray hole attack which are serious threats for MANETs. We will also discuss some proposed solutions to detect and prevent these attacks. As MANETs are widely used in many vital applications, lots of research work has to be done to find efficient solutions against these DoS attacks that can work for different routing protocols.A malicious node can additionally fluctuate between good and bad behavior by alternating periods during which it forwards the data and stops forwarding them. The packet dropping attacks (Blackhole and Grayhole) may bring great harm to the performance of ad hoc networks and can also convey damage to the network’s topology. So, a Novel Preventive based on clustering approach is proposed in this paper. Which will divide the traffic into number of clusters and a certification authority is defined for key distribution.
Keywords— MANETs; DSR; DOS; Preventive approach;