Trust Based Collaborative Attack Detection in MANET

摘要

The MANET faces critical issues due to the various attacks like wormhole, black hole, greyhole and even collaborative attacks. To overcome this issue, we propose to develop a detection scheme to detect and prevent collaborative attacks. Initially, clusters are formed with neighbourhood of nodes with a monitor node with all nodes at its 1 hop neighbours. This monitor node is chosen using an algorithm considering the willingness and trust value of a node. Then, we use ADCLU algorithm utilizing the monitor node to detect malicious nodes in a neighbourhood of nodes. Here, each pair of nodes may not be in radio range of each other but where there is a node among them which has all the other nodes in its 1 hop vicinity. The detection is based on voting from all other nodes about a certain message. The malicious node detected is isolated and further communication with this node is stopped.