Localization And Isolation Of Corrupted Nodes Using Trust-Based Routing Mechanism

The fast proliferation of wireless networks is gradually changing the landscape of network security. The communication between mobile devices is more and more opened to many sorts of attacks and vulnerability due to the lack of some line of defense clearly predefined. Many trust models have been designed and integrated within some systems and architectures but yet the attack problem based on some routing issues arises and constitutes the weakness of these systems.In this thesis, we examine particular security architecture with four different layers, which interact in order to localize the attacks and isolate the initiator(s) of these attacks. We have designed a new scheme that is based on the gathering of some basics and important routing mechanism, which will help to detect the different attacks. The particularity of the new scheme relies on the fact that it allows the system to prevent the failure of the system due to the congestion problems caused by a high traffic level and flow and our system strengthens the paradigm of fault tolerance. We build a new trust model based of the routing information provided by the route management layer that we integrated within the trust management layer. Simulation and results show that this scheme enhances the functionality of the system, gives a significant improvement at9%of the packet delivery rate and reduces12%of the packets drop.