Abstract
MANETs (Mobile Ad Hoc Networks) are slowly integrating into our everyday lives, their most prominent uses are visible in the disaster and war struck areas where physical infrastructure is almost impossible or very hard to build. MANETs like other networks are facing the threat of malicious users and their activities. A number of attacks have been identified but the most severe of them is the wormhole attack which has the ability to succeed even in case of encrypted traffic and secure networks. Once wormhole is launched successfully, the severity increases by the fact that attackers can launch other attacks too. This paper presents a comprehensive algorithm for the detection of exposed as well as hidden wormhole attack while keeping the detection rate to maximum and at the same reducing false alarms. The algorithm does not require any extra hardware, time synchronization or any special type of nodes. The architecture consists of the combination of Routing Table, RTT (Round Trip Time) and RSSI (Received Signal Strength Indicator) for comprehensive detection of wormhole attack. The proposed technique is robust, light weight, has low resource requirements and provides real-time detection against the wormhole attack. Simulation results show that the algorithm is able to provide a higher detection rate, packet delivery ratio, negligible false alarms and is also better in terms of Ease of Implementation, Detection Accuracy/ Speed and processing overhead.
Highlights
The charms of being connected without any physical medium are the keys to success of Wireless Networks
These techniques can be called as Hardware Based, Clock based (Requiring highly synchronized clocks), Packet Leashes based (Limiting packet traveling capabilities), RTT Based (Calculating Round Trip Time), TTL based (Managing Time to Live of Packets intelligently), Neighbor Based (Neighbor Collaboration) and there are a number of other detection techniques implemented
In this paper a simple and unique architecture is proposed for the detection of wormhole attack
Summary
A MANET is a network which doesn’t have a prominent infrastructure and nodes are free to move from one location to another. In a MANET; since there is no pre built network infrastructure; each node which needs to sends data to a faraway node must rely on all the nodes which make the path between the source and destination node. The concept of Wormhole attack was introduced by Hu, et al [4], since enormous amount of research has been done in the direction of mitigation the effects of wormhole attack. These efforts range across the whole possible domains i.e. from hardware based techniques to simple logic based techniques. We have listed down almost all of the proposed techniques present in literature in our survey paper [3]; to reduce the size of literature section, we will be listing down only those techniques which are most relevant to our research i.e. the techniques based upon RTT and RSSI.
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