An Efficient approach to detect the effect of Wormhole attack in MANET

Abstract

A Mobile Ad-Hoc Network (MANET) is defined as an arrangement of wireless mobile nodes which creates a temporary network for the communication. MANET doesn’t having any access point. Due to high availability of wireless devices infrastructure-less networks are using everyday’s life. MANET is suffering from two different kinds of attacks, active and passive attacks at all the layers of network model. The lack in security measures of their routing protocols is number of attackers to intrude the network. Wormhole, attack is generated by tunnels creation and it results in complete disruption of routing paths on MANET. Proposed system is a security approach to detect and mitigate wormhole attack.It is secured AODV approach which efficiently find wormhole attack which is present in given MANET and Digital signature is used to stop it. It calculates the all over tunneling time taken by tunnel to analyze the behavior of wormhole.After that it decides some static threshold value.Based upon this tunneling time and threshold value, it will decide whether given node is wormhole node or trustworthy node.After that apply digital signature and hash chain algorithm to remove wormhole node. It is one of the secured solution because it uses Hash function to prevent wormhole attcack.