A Survey On New Approach For Detecting Blackhole Attack

Abstract

Security is an essential requirement in mobile ad hoc networks to provide protected communication between mobile nodes. A MANET is a self-organizing system of mobile nodes that communicate with each other via wireless links with no .fixed infrastructure or centralized administration such as base stations or access points. Due to unique characteristics of MANETS, it creates a number of consequential challenges to its security design. To overcome the challenges, there is a need to build a security solution that achieves both broad protection and desirable network performance. MANETs are vulnerable to various attacks, such as blackhole attack, jellyfish attack, rushing attack, wormhole attack. Black hole is a type of routing attack where a malicious node advertise itself as having the shortest path to all nodes in the environment by sending fake route reply. By doing this, the malicious node can deprive the traffic from the source node. Although in this paper we only focus on the routing protocols and security issues in MANET. In this paper, we proposed an AODV and DPRAODV (Detection, Prevention and Reactive AODV) to prevent securitythreats of blackhole by notifying other nodes in the network of the incident. Keywords: AODV, Blackhole attack, MANETs, Routing protocol,