A Case Study on Mobile Adhoc Network Security for Hostile Environment

A mobile adhoc network (MANET) is a peer to peer wireless network where nodes can communicate with each other without infrastructure. Due to this nature of MANET; it is possible that there could be some malicious and selfish nodes that try to compromise the routing protocol functionality and makes MANET vulnerable to Denial of Service attack in military communication environments. Hence security is an important challenge while deploying MANET. This research effort examines the case study for a Layerwise Security (LaySec) framework that provides security for an ad-hoc network operating in a military environment. LaySec incorporates three security features (Secure neighbor authentication and Layerwise Security techniques and multipath routing) into its framework while maintaining network performance sufficient to operate in hostile environment. layerwise security protocol has been implemented and simulated on Qualnet 5.0. Based on the simulation result, it is observed that the proposed approach has shown better results in terms of Quality of Service parameters like Average packet delivery ratio, Average throughput, Average end to end delay and Routing Overhead.