Performance Analysis of Mobile Ad Hoc Network Based on Modified AODV using Grey Hole Attack

A wireless mesh network is a kind of multi-hop network and can be used as synonym for an Mobile ad-hoc network. A MANET (Mobile Ad-hoc Network) is a self-configuring system of mobile nodes connected by wireless links. MANETs are self-configuring and decentralized without having any fix infrastructure. In such a network, each node acts as an end system as well as a relay node (or router). It is a network having many to many connections with the capability of dynamically healing the network topology. Security is a challenging application of a wireless mesh network. The self-configurable self-organized nature makes a wireless mesh network more vulnerable to various types of attacks. Exploitation of a WMN can cause a large scale degradation of network performance. In this dissertation some attacks that are performed on various layers of TCP/IP model and performed a comparative study for a specific network layer attack: grey hole attack. A grey hole attack is often difficult to detect and recover. There are different techniques for its detection which have their advantages and shortcomings. Attack is often difficult to detect and recover. There are different techniques for its detection which have their advantages and shortcomings.