Exploiting Routing Tree Construction in CTP

摘要

Sensor nodes in a Wireless Sensor Network (WSN) are scat tered in an environment to collect data. These nodes are limited in re sources and cannot process the collected data or store it for long periods of time. Thus, the sensor nodes rely on routing protocols to relay the collected data wirelessly to a central controller for analysis and storage. However, the routing protocols are not immune against malicious nodes because they sacrifice the security aspect to meet the limited resources of the sensor nodes. In this paper, we demonstrate how a malicious node can exploit the computation of link qualities in the Collection Tree routing Protocol (CTP) to disrupt the construction of routing trees. We propose a lightweight detection system to detect this malicious node. The pro posed detection system is implemented and evaluated using the network simulator ns-2. The simulation results show that the detection system provides a robust detection.