Proactive resilience revisited: The delicate balance between resisting intrusions and remaining available

Paulo Sousa, Nuno Ferreira Neves, Paulo Veríssimo, William H. Sanders

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

In a recent paper, we presented proactive resilience as a new approach to proactive recovery, based on architectural hybridization. We showed that, with appropriate assumptions about fault rate, proactive resilience makes it possible to build distributed intrusion-tolerant systems guaranteed not to suffer more than the assumed number of faults during their lifetime. In this paper, we explore the impact of these assumptions in asynchronous systems, and derive conditions that should be met by practical systems in order to guarantee long-lived, i.e., available, intrusion-tolerant operation. Our conclusions are based on analytical and simulation results as implemented in Möbius, and we use the same modeling environment to show that our approach offers higher resilience in comparison with other proactive intrusion-tolerant system models. © 2006 IEEE.
Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Symposium on Reliable Distributed Systems
Pages71-80
Number of pages10
DOIs
StatePublished - Dec 1 2006
Externally publishedYes

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