A Secure Routing Protocol for MANET

Abstract — Mobile ad hoc networks (MANETs) have become a remarkable technology for wireless communication in recent years because of its critical and emergency situations that may cover. Routing protocols for ad hoc network are vulnerable to various types of attack. Security is an essential issue in MANET due to open medium and absence of clear line of defence. Security services are prerequisite for using mobile ad hoc networks in sensitive or inimical environments. This research is dedicated for providing a secure routing protocol for MANET with large number of security services in the network layer. The proposed work integrates IPsec protocol with three routing protocol for MANET; Ad hoc On demand distance vector (AODV), Optimized Link State Routing (OLSR), and Geographical Routing Protocol (GRP) to provide confidentiality, authentication, integrity, and access control for routing information and data messages. The designed secure and unsecure networks are simulated under the effect of two types of attack, Intelligence Pulse Jamming Attack (IPJA) which makes Denial of Services (DoS) and Misbehaviour Attack (MA) which performs malicious action of some nodes with respect to others. Simulation results using Optimized Network Engineering Tool (OPNET) Modulator demonstrates that the throughput is degraded and the end to end delay rises in secure network. Best throughput among these three routing protocol with IPsec integration is IPsec-GRP and the worst is IPsec-AODV, while the best end to end delay of the network in case of IPsec-OLSR and the worst is IPsec-AODV. Network with security services under the effect of MA gives better throughput than the network under IPJA influence but the end to end delay in case of MA is more than as compared wit