ACTIVE SOURCE ROUTING PROTOCOL FOR NETWORK

ACTIVE SOURCE ROUTING PROTOCOL FOR NETWORK

ABSTRACT

          A location based routing is a collection of mobile nodes that are dynamically and arbitrarily located in such a manner that the interconnections between nodes are capable of changing on a continual basis.

           The primary goal of this routing is correct and efficient route establishment between a pair of nodes so that messages may be delivered in a timely manner. LAR is an on-demand protocol who is based on the DSR (Dynamic Source Routing). The Location Aided Routing protocol uses location information to reduce routing overhead of the ad-hoc network! Normally the LAR protocol uses the GPS (Global Positioning System) to get these location information’s. With the availability of GPS, the mobile hosts knows there physical location.

           Unlike traditional distance networks, networks do not rely on any fixed infrastructure. Instead, hosts rely on each other to keep the network connected. The military tactical and other security-sensitive operations are still the main applications of ad hoc networks, although there is a trend to adopt ad hoc networks for commercial uses due to their unique properties.

          One main challenge in design of these networks is their vulnerability to security attacks. In this paper, we study the threats an ad hoc network faces and the security goals to be achieved.

          We identify the new challenges and opportunities posed by this new networking environment and explore new approaches to secure its communication. In particular, we take advantage of the inherent redundancy in ad hoc networks — multiple routes between nodes — to defend routing against denial of service attacks. We also use replication and new cryptographic schemes, such as threshold cryptography, to build a highly secure and highly available key management service, which forms the core of our security framework.

          The networks are a new paradigm of wireless communication for mobile hosts (which we call nodes). In this routing, there is no fixed infrastructure such as base stations or mobile switching centers. Mobile nodes that are within each other’s radio range communicate directly via wireless links, while those that are far apart rely on other nodes to relay messages as routers. Node mobility in an ad hoc network causes frequent changes of the network topology. Figure 1 shows such an example: initially, nodes A and D have a direct link between them. When D moves out of A’s radio range, the link is broken.

          However, the network is still connected, because A can reach D through C, E, and F. Military tactical operations are still the main application of ad hoc networks today. For example, military units (e.g., soldiers, tanks, or planes), equipped with wireless communication devices, could form an ad hoc network when they roam in a battlefield. The networks can also be used for emergency, law enforcement, and rescue missions. Since an ad hoc network can be deployed rapidly with relatively low cost, it becomes an attractive option for commercial uses such as sensor networks or virtual classrooms.

REQUIREMENT SPECIFICATION

Software Requirements

              Language                       : Java1.5

              Front End Tool              : Swing

               Operating System           : Windows 98.

         

Hardware Requirements

              Processor                       : Intel Pentium III Processor 

                   Random Memory                   : 128MB

              Hard Disk                      : 20GB

      Processor Speed             : 300 min