International Journal of Computer Theory and Engineering

Abstract

security has become a primary concern in order to provide protected communication between mobile nodes in a hostile environment. Unlike the wire line networks, the unique characteristics of mobile ad hoc networks pose a number of nontrivial challenges to security design, such as open peer-to-peer network architecture, shared wireless medium, stringent resource constraints and highly dynamic network topology. It is vital to protect the network from different kinds of security threats. This paper proposes a security solution for manets using a pre-existing routing protocol, ad hoc on-demand vector routing (aodv), using password security for each routing node and timeliness to update routing table. Aodv and saodv (secure aodv) are simulated and the performance of both the protocols are evaluated for varying number of nodes and malicious nodes. The performance of saodv was stable whereas that of aodv was found to be degrading sharply with intrusion of some malicious nodes in the network.