International Journal of Computer Science and Mobile Computing (IJCSMC)
Mobile ad hoc network is easy to organize, flexible and independent of any pre-established infrastructure has become main component of research work. But, the research in the field of ad hoc network is restricted to stand-alone isolated networks. To widen the network coverage and application domain of ad hoc networks the authors need to integrate the mobile ad hoc networks with Internet. The connection between MANET and Internet is established using an interface. To access the Internet it is necessary for the mobile nodes in MANET to find out the available gateway which requires a gateway discovery mechanism.