Improving Quality of Service Through Secured Routing in Mobile Ad Hoc Networks

Due to the high flexibility, mobility and low cost features, wireless ad hoc networks are widely used. A particularly challenging problem is how to feasibly detect and defend the major attacks against routing protocols of such networks that have susceptible links and dynamic topology. Most of the existing secure routing protocols for ad hoc networks either avoid the most challenging internal attacks such as Byzantine behaviors, or have often produced inefficient security mechanisms. In this paper, we propose the mechanism for securing the QoS route and to increase the probability of success in finding QoS feasible paths. Providing both security and QoS routing in MANET is the major challenge for this technology. Hence, we have addressed the QoS metrics, issue of security and its effectiveness. The performance of the proposed security model with QoS using GloMosim is studied and compared with and without QoS. From the results we observe that the overall network performance is improved with QoS.