A Novel Approach to Prevent Black hole Attack in MANET

Abstract

Mobile Adhoc Network (MANET) is a set of independent nodes which are capable of self-configuring and self-healing without any centralized infrastructure. The nodes in a MANET are mobile and are able to communicate among themselves over a wireless infrastructure. These nodes are likely to be affected by various types of attacks. Black hole attack is one among them and is a Denial of Service attack. In this attack, a hostile node drops all the packets which are to be sent to the destination instead of relaying them. Here  we analyze black hole attack in AODV routing protocol and propose an efficient method of preventing the attack.