Now-a-days communication from one place to another and transfer of data over the network has become an important part of our day to day life. Hence in order to make safe and secured data transmission in this communication process and to provide security to the data sent ‘Onion Protocol’ is used. Over here integrated collective node behavior analysis is done with Onion Protocol for best and secured data transmission. In Onion routing technique the sender and receiver remain anonymous. The sender remains unknown and anonymous because each intermediate node or onion router knows only the address or location of its preceding and following nodes.