Browsing by Author "Merabti, Madjid"

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    A New Low Cost Sessions-Based Misbehaviour Detection Protocol (SMDP) for MANE
    (IEEE Computer Society, 2007-05) Djenouri, Djamel; Fahad, Tarek; Askwith, Robert; Merabti, Madjid
    There is a strong motivation for a node to deny packet forwarding to others and being selfish in MANET. Recently, some solutions have been proposed, but almost all of these solutions rely on the watchdog technique, which suffers from many drawbacks, particularly when using the power control technique. To overcome this problem with a moderate communication overhead, this paper introduces a new approach for detecting misbehaving nodes that drop data packets in MANET. It consists of two stages: (i) the monitoring stage in which each node monitors its direct neighbours with respect to forwarding data packets of a traffic session in the network, and (ii) the decision stage, in which direct neighbouring nodes decide whether the monitored node misbehaves or not. Our new approach is able to detect the misbehaviour in case of power control employment, with a low communication overhead compared to the existing approaches.
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    On Securing MANET Routing Protocol Against Control Packet Dropping
    (IEEE Computer Society, 2007-07) Djenouri, Djamel; Mahmoudi, Othmane; Bouamama, Mohamed; Liewellyn-Jones, David; Merabti, Madjid
    In this manuscript we deal with securing routing protocols of mobile ad hoc networks (MANETs) against packet dropping misbehavior. More specifically, we propose a solution to protect control packets of reactive source routing protocols against. Most current proposals focus on data packets. Nonetheless, dropping control packets may be beneficial for selfish nodes and malicious ones as well. For example, simply by dropping RREQ (Route Request) packets a selfish node could exclude itself from routes and thereby avoid receiving data packets to forward. Similarly, a malicious could drop RERR (Route Error) packets to keep the use of failed routes, potentially resulting in a denial of service. Our solution could be intergraded with any source routing protocol. For the implementation in this work, we have chosen one of the most secure protocols, namely ENDAIRA. We assess our solution by an extensive simulation study.
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    Session-Based Misbehaviour Detection Framework for Wireless Ad hoc Network
    (Dynamic Publishers, Inc, 2007-09) Djenouri, Djamel; Fahad, Tarek; Askwith, Robert; Merabti, Madjid
    Abstract: Data packet dropping misbehaviour is a serious threat in ad hoc networks. The motivation of such behaviour is either to take illegal advantage and preserve resources (selfish) or to intentionally cause harm (malicious) to some victims. Most of the existing solutions to solve such misbehaviour rely on the watchdog technique, which suffers from many drawbacks, particularly when using the power control technique. To overcome this problem with a moderate communication overhead, this paper introduces a new Sessions-based Misbehaviour Detection Framework (SMDF) for detecting misbehaving nodes that drop data packets in stationary wireless ad hoc network. It consists of three components, the detection component in which each node monitors its direct neighbours with respect to forwarding data packets of a traffic session in the network, and the Decision component, in which direct neighbouring nodes decide whether the monitored node misbehaved or not and finally the isolation component where the guilty node will be penalized. Simulations results show that SMDF is scalable and able to detect the misbehaviour with high accuracy at low communication overhead and low energy consumption compared to the existing approaches.