Abstract:

In order to ensure the security of the information under the environment of complex network, intrusion tolerance is a good completement and the central issue of network security in recent years. The related theory of intrusion tolerance is illustrated, then  the status and related application of intrusion tolerance are studied, at last  the problems and future of intrusion tolerance are discussed. As the core of the 3rd generation information security, intrusion tolerance can prevent the intrusion effectively, it has a wide prospect.

Key words: intrusion-tolerance, fault-tolerance, network-security