Abstract:
Abstract —Mobile Ad-Hoc Networks (MANET) are selforganized wireless networks that are becoming progressively
popular. Determining an efficient route leading from a source
to a specific destination in these networks is an essential issue
since nodes are continuously moving. Furthermore, finding
a secure route is a difficult area to deal with since adversaries
might insert themselves into these routes unless a strict secure
routing procedure is implemented. In this paper, a novel
scalable secure routing protocol called S-Octopus has been
proposed. Via dividing the network area into sectors and
utilizing restricted directional flooding, our protocol intents
to achieve improved scalability. Moreover, S-Octopus seeks
to enhance robustness against the single point of failure and
compromise by introducing several Sector Certificate
Authority servers. Together with S-Octopus a location
service and a misbehavior detection system have been
proposed. Using GloMoSim simulator, S-Octopus security
and performance have been evaluated and compared with the
basic Authenticated Routing for Ad-Hoc Networks (ARAN)
as well as Zone-based Authenticated Routing for Ad-Hoc
Networks (ARANz). Simulation results assure that SOctopus is able to effectively initiate and maintain secure
routes in MANETs. Results also confirm that S-Octopus has
significantly mitigated the scalability problem by achieving
the maximum packet delivery fraction and the minimum
network and routing loads within fairly large networks with
high-mobility nodes and large malicious node percentage.
Thus, S-Octopus is a good choice for MANET established
among students on a campus or peers at a conference, where
keys and certificates might be previously deployed.
