Self-monitoring for sensor networks
Proceedings of the 9th ACM international symposium on Mobile ad hoc networking and computing
MISPAR: mitigating stealthy packet dropping in locally-monitored multi-hop wireless ad hoc networks
Proceedings of the 4th international conference on Security and privacy in communication netowrks
Wake-up receivers for wireless sensor networks: benefits and challenges
IEEE Wireless Communications
MSN: mutual secure neighbor verification in multi-hop wireless networks
Security and Communication Networks
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Sleep-wake protocols are critical in sensor networks to ensure long-lived operation. However, an open problem is how to develop efficient mechanisms that can be incorporated with sleep-wake protocols to ensure both long-lived operation and a high degree of security. Our contribution in this paper is to address this problem by using local monitoring, a powerful technique for detecting and mitigating control and data attacks in sensor networks. In local monitoring, each node oversees part of the traffic going in and out of its neighbors to determine if the behavior is suspicious, such as, unusually long delay in forwarding a packet. Here, we present a protocol called SLAM to make local monitoring parsimonious in its energy consumption and to integrate it with any extant sleep-wake protocol in the network. The challenge is to enable sleep-wake in a secure manner even in the face of nodes that may be adversarial and not wake up nodes responsible for monitoring its traffic. We prove analytically that the security coverage is not weakened by the protocol. We perform simulations in ns-2 to demonstrate that the performance of local monitoring is practically unchanged while listening energy saving of 30 to 129 times is achieved, depending on the network load.