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Uma Rede Overlay Tolerante a Intrusões: Arquitetura e Análise

Rafael ObelheiroJoni da Silva Fraga

The Internet routing layer is at times too slow at recovering from faults and makes a sub-optimal use of redundancy available at the IP layer. Overlay networks can overcome these deficiencies to provide communication infrastructures with greater availability and flexibility. The majority of current experiences, however, are able to tolerate only simple (crash) failures of the underlying network. In this paper we present an overlay network architecture that aims at providing highly available communication in spite of faults and intrusions in the network. An adaptation mechanism enables the network to reconfigure its topology in response to detected faults and intrusions. We also present a graph-theoretic model that allows the degree of fault and intrusion tolerance of a given overlay to be determined.

http://www.lbd.dcc.ufmg.br:8080/colecoes/sbrc/2005/057.pdf

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