BLACK HOLE DETECTION AND PREVENTION USING AODV AND SHORTEST DISTANCE TECHNIQUE

Wireless networks are gaining popularity to its peak today, as the users want wireless connectivity irrespective of their geographic position. There is an increasing threat of attacks on the Mobile Ad - hoc Networks (MANET). Black hole attack is one of the security threat in which the traffic is redirected to such a node that actually does not exist in the network. It's an ana logy to the black hole in the universe in which things disappear. The node presents itself in such a way to the node that it can attack other nodes and networks knowing that it has the shortest path. MANETs must have a secure way for transmission and commu nication which is quite challenging and vital issue. In order to provide secure communication and transmission, researcher worked specifically on the security issues in MANETs, and many secure routing protocols and security measures within the networks wer e proposed. Proposed work include the detection mechanism for black hole attack and mechanism to prevent the black hole attack in MANET using Advanced Ad - Hoc On Demand Di stance Vector (A - AODV) protocol .