ABSTRACT
Wireless sensor networks (WSNs) consist of wireless communication and sensor nodes. These networks have many challenges in terms of node deployment, energy consumption, communication range, fault tolerance, quality of service, etc. Due to these challenges, WSNs are highly vulnerable to security, particularly if the network is used for some mission-critical applications, e.g., a tactical battlefield, health care, etc. Security in such a network is therefore a challenging task. The trust management is an efficient method to prevent threats which are raised due to malicious nodes. In this paper, we propose a simple packet reachability-based efficient trust model which defends against bad mouthing, self-promoting, and collusion attacks. Experimental results demonstrate that packet reachability trust successfully mitigates malicious nodes, thereby securing the network. The proposed method filtered the anomaly feedback during indirect trust calculation. The experimental study and analysis show the effectiveness of the proposed method and maximize the defense against internal attacks.
