Enhanced Reliable ACK (ERACK) Scheme for Detecting Misbehaving Nodes in MANETs

Abstract

Abstract In Mobile Ad Hoc Networks (MANETs), the process of sending end-to-end acknowledgement (ACK) for each packet by the destination, causes unnecessary overhead. This paper proposes an Enhanced Reliable ACK (ERACK) scheme for detecting misbehaving attacks in MANET. Initially, reliable multiple paths are established by measuring the path reliability. For defending the data transferred from the dispatcher, one-way hash chain based Message Authentication Code (MAC) is utilised. If the packet loss count is above a threshold, then Secure ACK (S-ACK) mode is activated which identifies the misbehaving node. The source then generates a Misbehavior Report Authentication (MRA) message which is transmitted to the destination using the path with next higher reliability. By experimental results it is shown that the ERACK method decreases the packet loss and delay while ensuring the successful delivery of MRA to the destination.