Isolation of Stealthy Attacks Over Wireless Mesh Network Using Enhanced AODV Protocol

Stealthy packet dropping is a suite of four attacks can be easily launched against multi hop wireless Mesh networks. The main threats that viol attacks. The major attack types of WMN are denial of service attack, impersonation attack and routing attack. All these attac threat on user privacy protection, once disclosed to the attackers access the public Internet in different roles and contexts for services like e interact with their local peers for file sharing, teleconferencing, online gaming, instant chatting, etc. Obviously all these communications contains various kinds of sensitive user information. To overcome these malicious attacks in sensitive applications which con of user privacy information, WMNs need secured and privacy preserving protocol to ensure security and privacy. The protocol should also ensure the confidentiality, Integrity, authenticity, availability, non repudiation of network traffic and preserve the availa communications from the malicious attackers.We present AODV protocol to mitigate these problems Keywords— AODV protocol, WMN, impersonation attack, non repudiation ____________________________________________________________________________________________________________________ I.INTRODUCTION 1.1 Overview Of Wireless Mesh Networks Wireless Mesh Networks (WMNs) are dynamically organized and self-configured, with the nodes in the network automatically establishing an Ad Hoc network and maintaining the Mesh connectivity. WMNs are comprised of two types of nodes: Mesh routers and Mesh clients. Other than the routing capability of gateway/bridge functions as in a conventional wireless router, a Mesh router contains additional routing functions to support Mesh networking. Through multihop communications, the same coverage can be achieved by a Mesh router with much lower transmiss power. To further improve the flexibility of Mesh networking, a Mesh router is equipped with multiple wireless interfaces built on either the same or different wireless access technologies. Mesh routers have minimal mobility and from the Mesh backbone for Mesh clients. Thus, although Mesh clients can also work as a router for Mesh networking, the hardware platform and software for them can be much simpler than those for Mesh routers and Mesh clients, the gateway/bridge functionalities in Mesh router enable the integration of WMNs with various other networks. Instead of being another type of Ad Hoc networking, WMNs diversify the capabilities of Ad Hoc networks. This feature brings many advantages to WMNs, such as low up-front cost, easy network maint robustness, reliable service coverage, etc. Therefore, in addition to being widely accepted in the traditional application sectors of Ad Hoc networks, WMNs are undergoing rapid commercialization in many other application scenarios such as broadband home networking, community networking, building automation high speed metropolitan area networks and enterprise networking. Clearly, security in a WMN is extremely important for effective utilization of these application areas. One main www.ijmtes.com R.Asha, R.Prabavathi of ECE, Anna University, Kumbakonam, India) University, Kumbakonam, India —misrouting, power control, identity delegation, and colluding collision ate the security criteria are known as security the information could compromise any user’s privacy. Through WMN, they -mails, e-banking, e-commerce and web surfing, and also intensively