The Strategy of Proactive-Reactive Intrusion Tolerance Recovery Based on Hierarchical Model

This paper proposes a strategy and conception of hierarchical recovery,which is based on the proactive-reactive intrusion tolerance recovery and integrated the process level recovery, object level recovery and system level recovery. In this way, we can decrease the recovery grain size and avoid the waste of time and space results from the whole recovery of the part fail and increase the flexibility and reliability. In this paper, we give the basic strategy and method, and finally our simulation experiments demonstrate that the recovery based on the hierarchical model can decrease the frequency of system level recovery and the overall recovery time well.