Implementation of a trust model over OLSR in a wireless Ad Hoc testbed

摘要

The concept of a customized Optimized Link State Routing (OLSR) protocol with focus on augmented security protecting a node against blackhole and flooding attacks launched by its neighbor nodes in the network by implementing a trust model is described in this paper. This trust model is a computational variable that dictates the behavior of the node to protect itself against malicious attack in a robust and intelligent manner. We have also developed a testbed that evaluates the resultant deportment of the node in real time and generates user friendly analysis reports. Through real time test runs, we have concluded results favoring our proposal in the following network measures of throughput, end to end delay and overhead. The throughput was found to be 70% better in real time ad hoc testbed which has been designed to have 25% blackhole and flooding nodes respectively. The overhead encountered was minimal despite the end to end delay of packets being higher than the traditional OLSR by 30 msec. Our work is also the first ever implementation of a trust model over an ad hoc routing protocol in a real ad hoc testbed.