Trusted M-Olsr For Secure Routing In Wireless Mesh Networks

Wireless Mesh Networks (WMNs) do not rely on any centralized administration and they are built by the connection of various static and mobile entities (i.e. nodes). The cooperation and coordination between these network entities are essential to establish a secure routing path. Presence of malicious or misbehaving nodes within a routing path may disrupt the network activities either by dropping or spoofing data packets. To ensure a secure route discovery and its maintenance, it is necessary to compute trustworthiness of individual nodes in a cooperative manner for discovering neighbors, selecting routers and announcing topology information in WMNs. In order to detect trustworthy nodes in the networks, we propose a model based on Multiple Criteria Decision Making (MCDM) which quantifies node behaviors into discrete quantities. The proposed scheme ensures detection of malicious and misbehaving nodes in the network. This proposed trust building process is then integrated with Modified Optimized Link State Routing (M-OLSR) for secure route calculation in WMNs. The newly developed protocol named as Trusted M-OLSR (TM-OLSR) allows only trusted and stable nodes to participate in route establishment and enhance security features of the corresponding protocol. To evaluate TM-OLSR's performance and suitability in WMNs, a comparison of the proposed protocol with M-OLSR is carried out using NS-2 simulator.