期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2015
卷号：4
期号：3
页码：10743-10749
出版社：IJECS
摘要：A mobile ad hoc network (MANET) is normally a, infrastructure-less network of mobile devicesconnected without wires. But protecting the network layer from malicious attacks is an important and challengingsecurity issue in mobile ad hoc networks (MANETs). Mobile ad hoc networks are vulnerable to a variety of network layerattacks such as black hole, gray hole, sleep deprivation & rushing attacks. Intrusion detection and prevention provides away to protect mobile ad hoc networks (MANETs) from attacks by external or internal intruders. So, in the existingsystem cost sensitive model for Intrusion Response Systems (IRS) is used in fixed networks. This technique relies oncomparing the cost of deploying a response against the cost of damage caused by an “un-attended” intrusion and decidesto preemptively deploy a response with maximum benefit. But the problem is In MANETs it is difficult to calculate theintrusion response cost, which we can define as the negative impact on the network resources caused by the response. So,in the proposed system an intrusion detection & adaptive response mechanism (IDAR) for MANETs is presented thatdetects a range of attacks and provides an effective response with low network degradation. The deficiencies of a fixedresponse to an intrusion are considered and we overcome these deficiencies with a flexible response scheme that dependson the measured confidence in the attack, the severity of attack and the degradation in network performance. We presentresults from an implementation of the response scheme that has three intrusion response actions. Simulation results showthe effectiveness of the proposed detection and adaptive response mechanisms in various attack scenarios. An analysis ofthe impact of our proposed scheme shows that it allows a flexible approach to management of threats and demonstratesimproved network performance with a low network overhead
关键词：mobile ad-hoc network and intrusion detection;system
