A Survey of Sinkhole Attack on DSR in MANET

MANET is a collection of wireless mobile node that communicating with each other without the use of network infrastructure. Each mobile node in mobile ad hoc network act as a host as well as router and willing to forward data to other nodes. A routing protocol is essential whose primary goal is to establish correct & well-organized route between pair of nodes, due to this reason, the routing protocols have been proposed for MANET. Routing security is one of the important challenges in MANET. Sinkhole attack is a type of routing attack in network layer which alter or drops the whole network traffic. This paper describes the sinkhole attack on DSR protocol. We have analysis the sinkhole attack, various detection and prevention techniques in MANET.