Misbehavior nodes detection and isolation for MANETs OLSR protocol

Intrusion Detection Systems (IDS) in Mobile Ad hoc Networks (MANETs) are required to develop a strong security scheme it is therefore necessary to understand how malicious nodes can attack the MANETs. Focusing on the Optimized Link State Routing (OLSR) protocol, an IDS mechanism to accurately detect and isolate misbehavior node(s) in OLSR protocol based on End-to-End (E2E) communication between the source and the destination is proposed. The collaboration of a group of neighbor nodes is used to make accurate decisions. Creating and broadcasting attackers list to neighbor nodes enables other node to isolate misbehavior nodes by eliminating them from the routing table. Eliminating misbehavior node allows the source to select another trusted path to its destination. The simulation results show that the proposed mechanism is able to detect any number of attackers while keeping a reasonably low overhead in terms of network traffic.