Research On Security In Mobile Ad Hoc Networks

A mobile ad hoc network(MANET) consists of a collection of wireless mobile nodes that are capable of communicating with each other without the use of a network infrastructure or any centralized administration. MANET is an emerging research area with practical applications. However, wireless MANET is particularly vulnerable due to its fundamental characteristics, such as open medium, dynamic topology, distributed cooperation, and constrained capability. Research on security in MANET is still in its infancy.This paper introduces the foundational conception, features, security requirements and security threats of mobile ad hoc networks; provides a state-of-the-art view of security in ad hoc networks; then discusses in detail the security aspects of key management, routing, intrusion detection.The main contributions of this paper include:1. A material realization method for distributed authentication is given, and the process of the generation of private key shares, detection and elimination Byzantine nodes and dynamically refreshing the private key shares. The method may decentralize the security threats and solve some key management and secure authentication problems to some extent.2. A security enhancement scheme is proposed to encounter the black hole attacks in AODV protocol. This scheme may solve the black hole problem and prevent personating the destination node to some degree.3. A new intrusion detection and response architecture for mobile ad hoc networks is presented. This model is distributed and relatively applicable to ad hoc networks.