The research progress of network intrusion tolerance

Aiming at the shortcomings of the information security under the environment of complex network, intrusion tolerance focus on remaining and providing continual network service even in the presence of attacks or intrusions and is the central issue of network security in recent years. The related theory of intrusion tolerance, the status and the applications of intrusion tolerance are studied in this paper. As the core technology of the 3rd-generation information security, the intrusion tolerance which has a wide prospect can prevent the intrusion effectively and ensure the network operate properly with the existence of intrusion.