Blackhole Attack Detection and Prevention in MANET

Abstract

Adhoc network is a temporary network formed by multiple mobile nodes for sharing some information with each other. This network does not have any infrastructure support. As adhoc network does not have any infra structural support data routing is handled by nodes only. Thus, security is a major concern in this type of network. Wireless connectivity makes it more easy for any node to plug itself into network, so any malicious node can disrupt entire working of network easily. In order to tackle this, we have to find the malicious node according to its behavior and role in network. Blackhole is a type of attack in Adhoc network where, a malicious node intentionally drops all the packets which it had to forward its neighbor nodes. Adhoc On-Demand Distance Vector Routing(AODV) is a routing protocol which is to be modified to identify and logically isolate the malicious node from network.