A Study on Different Types of Blackhole and Wormhole Attack in MANET

Abstract

Ad-hoc mobile networking (MANET) is an important technology in wireless networks with mobile nodes. Where nodes are collaborate with each other in a distributed manner and to provide multiple communications between sources and destination node. In general, the basic assumption of MANET is that each node is a trusted node. However, in a real case, there are some untrusted nodes that misbehave and attack the network like a black hole and wormhole. Where black hole nodes attract all traffic, providing false information about small hop count path to destination and with very sequence number to destinations. In wormhole attack, attacker collect data packets at one place and tunnels this data packet to another place in the network. For this attacker will give false information to the source node that the attacker node has the shortest path between sender and receiver. Source node will eventually choose that path for transmission. Once the path is established, both the nodes will drop all the incoming and outgoing packets and this causes denial of service attack, using wormhole attacks in this paper, we will discuss black hole and worm hole attack and discuss the different techniques which is used to detect and prevent these two attacks by different researchers.