Effect of Selfish Nodes in Trust Base Route:MANET

MANET is a network with no fixed infrastructure. Routing is a greater challenge in these types of mobile networks due to the mobility and open media nature .The mobile ad hoc networks are more prone to security threats compared to the wired network. Therefore security needs are higher in mobile ad hoc networks compared to the traditional networks. Many types of problem are possible in mobile ad hoc networks such as selfish node problem .Selfish node is a node which can hold packet for using resources for their respective use. So for data security we want to send it through secure route, for that purpose we identify which node is cooperative and which one is selfish. Increasing of selfish node decreases the trust value of a node. If selfish node can be detected in a rout then one can abort that route and choose another safe route for data transfer. This paper analysis the selfish nodes problem in MANET with the help of network simulator and explore that the network performance is inversely proportional to no. of selfish node. After finding load on network route can be modify and network performance can be increased.