A Survey of Reactive Routing Protocols for Detection&Prevention of Selective Black-hole Attack in MANET

Black-hole attack in MANET refers to a Network layer attack. In networking, black holes refer to places in the network where incoming or outgoing traffic is silently discarded (or dropped), without informing the source that the data did not reach its intended recipient. In fact wireless network doesnt have a fixed topology, the black holes themselves are invisible, and can only be detected by monitoring the lost traffic; hence the name. We present a comparison between Conventional Reactive Routing Protocols (DSR, AODV) with a Modified Approach to Analyze the Performance in the Presence of selective black hole attack. Performance Analysis of these protocols can be verified using ns2 simulator.