Essay Manet

8180 Words Apr 4th, 2011 33 Pages
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Security Issues in MANETs
Presented By:
Abhishek Seth 04329001

Abstract
Mobile Ad hoc Networks (MANET) has become an ex¬citing and important technology in recent years because of the rapid proliferation of wireless devices. A mo¬bile adhoc network consists of mobile nodes that can move freely in an open environment. Communicating nodes in a Mobile Adhoc Network usually seek the help ofother intermediate nodes to establish communication channels. In such an environment, malicious interme¬diate nodes can be a threat to the security of conver¬sation between mobile nodes. The security experience from the Wired Network world is oflittle use in Wire¬less
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The rest of the paper is organized as follows. Section 2 will illustrate about MANETs. Section 4 will raise the problems of secuirity in MANETs. Further sections deals with some of the solutions to these problems. Fi-nally Section 10 concludes this article.
2 Mobile Adhoc Networks
2.1 Introduction
Mobile Adhoc Network (MANET) is a collection of in-dependent mobile nodes that can communicate to each other via radio waves. The mobile nodes that are in radio range of each other can directly communicate, whereas others needs the aid of intermediate nodes to route their packets. These networks are fully dis¬tributed, and can work at any place without the help of any infrastructure. This property makes these net¬works highly flexible and robost.
The characteristics of these networks are summarized as follows:
¢ Communication via wireless means.
¢ Nodes can perform the roles of both hosts and routers.
¢ No centralized controller and infrastructure.
¢ Intrinsic mutual trust.
¢ Dynamic network topology.
¢ Frequent routing updates.
2.2 Advantages and Applications
The following are the advantages of MANETs:
¢ They provide access to information and services regardless of geographic position.
¢ These networks can be set up at any place and time.
Some of the applications of MANETs are
¢ Military or police exercises.
¢ Disaster relief operations.
¢ Mine cite operations.
¢ Urgent Business meetings.

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