关键词: 拒绝服务攻击, 分布式拒绝服务攻击, 移动自组织网络

Abstract: When the Mobile Ad Hoc Network (MANET) is widely used in many areas nowadays, the research on security of MANET is becoming more and more important. DDoS attacks have brought very serious threats to the MANET, as well as to the wired network. Because of the peculiarity of the MANET, the research for DDoS attacks in MANET is much more different from that in wired network. This paper first describes security problems in MANET, and then lists the DDoS attacks in the physics layer, MAC layer, network layer, and transport layer. At the same time, we also introduce the state of the art of defense mechanisms against the challenge of each kind of DDoS attacks. At last, some instructive suggestions about how to form a secure MANET against the DDoS attacks have been given.

Key words: Denial-of-service Attack, Distributed Denial-of-service Attack, Mobile Ad Hoc Network