Ad hoc网络的无线、自组织特点使其很容易受到DoS攻击。在已有研究成果DSR-BCA协议的基础上,增加一个应对DoS攻击的机制,参与网络路由的节点都执行路由参与验证算法,当网络数据传输的丢包率超过预设阈值时,用隔离算法找出被DoS攻击的节点并隔离它,使网络节点的有效性最大化。仿真实验表明,该方法在Ad hoc网络受到DoS攻击时的效果明显,在平均传输时延和分组投递率两方面的性能都有提高,对于DoS攻击可以起到很好的抵制作用,提升了网络的健壮性。
【英文摘要】
Feature of wireless and self-organizing makes Ad hoc network very vulnerable to DoS attacks. On the basis of existing research results of DSR-BCA protocol,this paper added a mechanism to deal with DoS attacks. Nodes participate in routing were involved with a verification algorithm of performs routing. When the network data transmission packet loss rate exceeded a preset threshold,the isolation algorithm was used to identify the node which had been DoS attacked and isolated it,so as to maximize the effectiv...
【基金】
国家自然科学基金资助项目(60902044)
【更新日期】
2014-10-31
【分类号】
TN929.5
【正文快照】
0引言Ad hoc网络是一种无线、无中心、多跳的自组织网络,比传统网络更容易受到安全威胁[1]。针对Ad hoc网络数据传输带宽有限的特点实施的DoS(denial of service,拒绝服务)攻击可以让内部攻击者(可以理解为自私节点或被敌方俘获的节点)对有效节点发送错误的路由信息或丢弃数据?