A Review: Blackhole Attack Detection/Prevention Techniques in MANET

Mobile Ad hoc network (MANET) is infrastructure-less network. The nodes are free to move in the network and also wireless topology may change rapidly. For the security concerned, it is very important to protect communication between mobile nodes. There are many attacks in MANET and one of them is Blackhole Attack. The blackhole attack is degraded the network’s performance and reliability. Blackhole node or malicious node sends the Route Response (RREP) to the sender which having a shortest path to reach to the destination and when sender starts the communication with that blackhole node, that node drops all packets. Now a day, there are many detection and prevention techniques available to protect the network form the blackhole attack. This paper is shortly explains the detection techniques of the blackhole attack in MANET.