Essay On Wormhole Attack

A Survey on Wormhole Attack Prevention: ASWAP Prof.Smita Pawar, Steffi Saldanha , Silviya Mouris, Leena Mariaselvam Abstract

An ad-hoc network has a dynamic topology. The network is self organizing and adaptive which repeatedly changes its topology .Nodes can be easily added into the network and hence security issues are a major concern in such networks. It’s broadcasting character and transmission medium helps the attacker to interrupt the network. In this paper, we have elaborated on a severe attack called as wormhole attack, its causes and the techniques that are available to detect and prevent the attack. Also a comparative study of the techniques is done and their pros and cons have been stated. Introduction

Security is an essential factor that is taken into consideration for the creation of ad-hoc networks. Ad-hoc networks most striking feature is that it does not require any infrastructure. The ad-hoc network is generally a decentralized network in which nodes are free to move, hence it is said to have a dynamic topology. The adding or extraction of nodes in ad-hoc networks is not a difficult task. This raises the issue of security in them. Various attacks can be launched on ad-hoc networks such as a black hole attack, sinkhole attack, eavesdrop attack, rushing attack etc. The attack that we are

It is used for multi-hop ad-hoc networks. LiteWorp is a protocol that detects a wormhole and then eliminates it from a network, thus taking the network to the climax of its performance. In this technique the guard nodes are used to analyse the network performance, it keeps track of the traffic going in and out of its neighbours. The guard node also maintains a list of the malicious nodes that it encounters. It then avoids the use of such node for data transfer. Liteworp does not require any time synchronization or external hardware eg. Directional