Implementation of A3ACKs intrusion detection system under various mobility speeds

Wireless networking is an emerging technology that allows users to access information and services anywhere regardless of their geographic location. Mobile Ad hoc Network (MANETs) is one of the most significant technologies among various wireless communication technologies. In MANETs, all nodes are mobile and can be connected dynamically using wireless link in a random manner. All nodes work as routers and take part in discovery and maintenance of routes to other nodes in the network. MANETs are unique infrastructure less network and have self-configuring features make them suitable for many critical applications, such as military and emergency applications. However, these features make them also vulnerable for all types of passive and active attacks because of open environment, the rapidly changing topology and the decentralization of nodes. In addition, most of the proposed protocols assume that all nodes in the network are cooperative, and do not address security issues. Moreover, most of the proposed existing intrusion detection systems (IDSs) of are based on Watchdog technique. In this paper, we propose and implement a new intrusion detection system named Adaptive three ACKnowledgments (A3ACKs) that solves three significant problems of Watchdog technique, mainly: receiver collision, limited transmission power and collaborative attacks. We use Network Simulator 2 (NS2) to implement and test our proposed system under different networks with various mobility speeds as well as compare our results with the results of some closely existing IDSs mechanism.