International Journal of Computer Science and Management Studies (IJCSMS)
MANET is a infrastructure less network that consists of mobile nodes. The routing of data in the MANET from source to destination is controlled by various protocols. Several attacks can degrade the performance of the network by interrupting the working of routing protocol. This paper discusses various attacks possible at each layer with a brief of routing protocols in MANET. This paper also discusses the various works done to detect and prevent the black hole and the gray hole attack.