Improved Trust Based Routing Mechanism in DSR Routing Protocol in MANETs

Mobile Ad hoc Network (MANET) is a self organizing wireless network for mobile devices. They do not need any fixed infrastructure to be configured which makes it more suitable to be used in environments that require on-the-fly setup. The present work discusses the challenging issues in MANET routing security. It presents improved DSR, a trust-based scheme for securing DSR routing protocol in MANET using the friendship mechanism and gateway. The path which is most optimum is chosen as the final route from source to destination. The gateway nodes should not be malicious. The nodes can evaluate the routing paths according to some selected features (such as node reputation and identity information) before forwarding the data through these routes. It is implemented in our scheme, simulation (using NS2). This scheme provides a robust environment where MANET nodes can trust each other in a secure community. Experimental results show that our gateway based DSR improves network performance to much extent.