Um modelo de gerenciamento de segurança adaptativo para redes de emergência

Abstract

In cases of disasters and emergency scenarios, due to lack of network infrastructure, first-responders can build mobile ad hoc networks to send information. However, the communication in these situations can suffer long interruptions, which should be considered in the network security aspect. The security requirements can change according to the scenario and utilization of the network. It's necessary to provide adaptability to balance the relation between security degree and network resource utilization. This work proposes a security management framework to dynamically configure and reconfigure emergency networks, with goal to adapt the use of security mechanisms according to management information received by the entities responsible for decision-making. The security management model includes the definition of security levels, management information base, protocol messages and events. This management allows the network adaptation during its execution, activating or deactivating security components. The evaluations realized show an emergency network behavior with activation of security mechanisms if necessary. Results indicate that the proposed management model doesn't impact the delivery probability of network messages. The analysis of this model demonstrates that the management messages reach every participant node and the mechanisms' gradual activation due to threat detections for network security can provide resource savings.