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The present work is dedicated to study attacks and countermeasure in MANET. After a short introduction to what the Mobile Ad hoc Networks (MANETs) are and network security we present a survey of various attacks in MANETs pertaining to fail routing protocols. We present the different tools used by these attacks and the mechanisms used by the secured routing protocols to counter them. We also study a mechanism of security, named the reputation, proposed for the MANETs and the protocol which implements it. We also propose a secure mechanism which is based on the reputation. Our work ends with a proposal analytical model to the modules of our mechanism and the equilibrium states of our model.

ABSTRACT

The present work is dedicated to the implementation of a secure mechanism's modules in routing protocol of MANET with the theory of games. First we are doing an introduction to what the Mobile Ad hoc Networks (MANETs) and a presentation of some various attacks in MANETs pertaining to fail routing protocols. We study these attacks and the mechanisms which the secured routing protocols use to counter them. In the second hand we also study a reputation mechanism and we also propose a secure algorithm based on the reputation. Our work ends with a proposal analytical model by the theorical games and an implementation to the modules of our mechanism..