Proposta de um modelo de confiança para o protocolo OLSR

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This work presents a new computational trust model, developed to improve the packets forwarding in MANET using OLSR protocol. Mobile Ad hoc Networks (MANET) are composed of mobile devices that communicate directly without the need of any prior infrastructure. The nodes in these networks operate as routers. The Optimized Link State Routing Protocol (OLSR) is a standard routing protocol in use on this type of network. Routing protocols for MANET have no specific security mechanisms. Thus, a MANET is vulnerable to a variety of attacks related to the routing protocol. In this work, we tackle non-cooperation attacks related to the packet forwarding. This attack consist of a node that takes responsibility for packet forwarding through the binds of the routing protocol execution, but does not perform this operation as expected. The trust model proposed in this work aims to evaluate qualitatively and quantitatively the computational trust between the nodes that participate in MANET routing. Our proposal is based on J. Patels Trust and Reputation Model for Agent-based Virtual Organizations (TRAVOS). The model presented was validated in a proof of concept experiment. For this experiment, the proposed model was implemented as an extension to the daemon Unik OLSRD (www.olsr.org). The model and its implementation have been tested in a real MANET with hypothetical operational conditions. As results of this work we shall highlight the following contributions: Presentation and evaluation of a new computational trust model to improve the robustness of the packets forwarding in MANET. The actual implementation of the proposed model as an extension to the Unik OLSR daemon.

ASSUNTO(S)

manet confiança computacional engenharia eletrica olsr

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