Security for Multihop Wireless Networks

78  ◾  Security for Multihop Wireless Networks

Several solutions have been proposed for detecting and isolating or incentivat-

ing misbehaved nodes in MANETs. Marti et al. [11] proposed a Watchdog and a

Pathrater over DSR protocol to detect nonforwarding nodes, maintaining a rat-

ing for every node and selecting routes with the highest average node rating. e

response module of this technique only relieves misbehaved nodes from forward-

ing packets, but they continue getting their traffic forwarded across the network.

Buchegger and Le Boudec [12] proposed the CONFIDANT protocol over DSR,

which combines a watchdog, a reputation system, Bayesian filters, and information

obtained from a node and its neighbors to accurately detect misbehaved nodes. e ...