Secure Mobile Ad-Hoc Network (MANET) Using Trust Feature In Friendship Mechanism

Mobile ad hoc network comprises autonomous and anonymous node roaming freely without centralize controller to determine the communication path. Each nodes can function as arouter by itself. They rely on each other in forwarding packets. Communication among nodes exist without the need of a supporting fixed router or access point. Specific feature of MANET such as transmission range,shared resources of wireless devices, resource consumptions, false alarms, the mobility of nodes, and the resistance of IDS may cause security and efficiency issues. MANET are not immune with false accusation and false alarms cause by blackmail attacker and other potential attackers that can target the operational of a routing protocol in an ad hoc network. In this paper, we propose a security enhancement for the friendship mechanism used to speed up the malicious no dedetection by implementing trust features base on relationship among the nodes which make them to cooperate in an ad hoc environment. We calculate the trust values to determine the relationship status of nodes through simulation experiment using NS-2 tool.