137 | Page A Session based Secured Communication for inter-networking environment in VANETs R.Jeevitha 1 , Dr.N.Sudha Bhuvaneswari 2 1 Research Scholar, Department of Computer Science, Dr.G.R.Damodaran College of Science, India. 2 Associate Professor, Department of Computer Science, Dr.G.R.Damodaran College of Science,, (India) ABSTRACT Vehicular Ad-hoc Network (VANET) is the subset of Mobile Ad-hoc NETwork (MANET). For the past few years, VANET evolved into VANET based cloud. Since the wireless communication takes place between vehicle to vehicle (V2V), vehicle to roadside units (V2R), security places a major role in vehicular network application. This paper mainly focuses on session based secured communications in VANET cloud using AODV, DSR and DSDV routing protocol. The performance metrics like Throughput, Jitter and Delay are analyzed with the help of NS2. Keywords— Cloud, MANET, VANET, V2V, V2R I.INTRODUCTION 1.1. Vehicular Adhoc Networks Due to the increase in large number of vehicles, congestion on road and accidents are the major issue. VANET paves way for reduction of congestion on road and accident avoidance. Most widely used wireless access technologies in Vehicular Adhoc Networks are Dedicated Short Range Communication (DSRC) and Wireless Access in Vehicular Environment (WAVE). The VANET architecture comprises of three categories namely Vehicle to Vehicle Communication (V2V), Vehicle to Infrastructure Communication (V2I), and Inter Roadside Communication (VRC). In V2V communication, the vehicles communicate with each other without any infrastructure units. The vehicles can communicate with the Road Side Units (RSU) that are within its transmission range in V2I Communication. Inter Roadside Communication (VRC) comprises of both vehicle to vehicle communication as well as one RSU will communicate with other RSU. VANET applications are classified into two categories namely Safety applications and User Applications. [5][11] 1.2. Cloud Cloud Computing is the latest technology that is being used all over the world. The resources can be retrieved from Internet through web-based tools and applications. Users need not be available in a specific place to gain access to it. Employees can work remotely. Users can access their email in any computer system and store files using Google Drive also. Cloud comprises of three services: Infrastructure as a Service (IaaS), Software as a Service (SaaS) and Platform as a Service (PaaS). Cloud security still remains a big challenge in research. [9]