查看文章

MANET is a collection of mobile, decentralized, and self-organized nodes. Securing MANET is a problem which adds more challenges on the research. This is because MANET properties make it harder to be secured than the other types of static networks. It suffers from a variety of security attacks and threats such as: Denial of Service (DoS), flooding attack, impersonation attack, selfish node misbehaving, routing table overflow attack, wormhole attack, blackhole attack etc. MANET is open to vulnerabilities as a result of its basic characteristics like no point of network management; topology changes vigorously, resource restriction, no certificate authority or centralized authority. This paper objective is to summarize different types of attacks over MANET, and concerns with studying sleep deprivation attack. Our objective is to design an artificial immune system to secure from sleep deprivation attack and is based on biological Danger Theory and we imply the concept of using two thresholds on the basis of throughput. In this paper we count on the number of requests sent by a particular node in a given interval of time twice, once for minor threshold and later for major threshold.