期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2017
卷号：95
期号：6
出版社：Journal of Theoretical and Applied
摘要：Mobile Adhoc Networks (MANETs) do not include any fundamental power and also infrastructure less networks, so unprotected against black hole attacks. It decreases the network performance by dropping the number of messages. Black hole node always attracts the concentration of source nodes by guarantee them that it has the minimum cost path towards destination nodes. Many techniques have been proposed so far, in order to reduce the impact of the black hole attack by detecting and preventing it. Among the existing techniques, Watchdog (WD) technique has shown better performance in preventing the black hole attack. It utilizes the local knowledge of the next hop node and eavesdrops it. If it gets that spending time of the message is more than the given threshold, then it characterize that node as black hole attacker. But this method has several shortcomings that it does not track the link transmission errors, which may be because of congestion in MANETs and also it not offers high mobility for maximum number of nodes, which eventually decreases the performance. In order to handle this issue, a new multipoint relays (MPRs) based WD monitoring and prevention technique is proposed in this paper. The multipoint relays based WD monitoring and prevention technique utilizes the dynamic threshold value to detect the black hole attacker node by utilizing Clustering, WD and MRPs based optimistic path for communicating the messages. Experimental results clearly indicates the effectiveness of the proposed technique over others. Thus, it reduces the overall message dropping, which improves the performance of the MANETs.
