Network system

Abstract

The invention discloses a network system. The network system comprises a transparent firewall, a database firewall, an intelligent inspection device and an emergency device. The transparent firewall is used for analyzing an existing network scanning technology and extracting universal scanning characteristics, and filtration is conducted with the universal scanning characteristics used as filtering rules. The database firewall is used for protecting data. The intelligent inspection device is used for examining the matching degree of an accessed website and a virus database, providing an abnormal website processing suggest, conducting communication with a host generating an abnormal website, extracting attack fingerprint characteristics, and enabling the tack fingerprint features to be stored in an immune characteristic database. The emergency device is used for conducting restoration on damaged intranet nodes detected by the intelligent inspection device. The database firewall is sequentially connected with an alarm module, a data uploading module and a data eliminating module. The network system maintains a good network state, through analysis and memorizing of unknown intrusion behaviors, the network immune capacity is improved, the damaging range can be effectively controlled after the intrusion behaviors are conducted, it is guaranteed that a network is unblocked and services are supplied normally, and the system has self-repairing and restoration capacity and comprehensively maintain stable operation of the network.

Description

technical field [0001] The invention belongs to the field of the Internet, and in particular relates to a network system. Background technique [0002] Information security issues generally exist in various aspects such as social economy, military technology, national security, intellectual property rights, commercial secrets and even personal privacy. Network security is a key issue that has been studied in the field of computer network and its application. However, the traditional network security theory and technology have the following three insurmountable defects. Firstly, the method of centralized control seems powerless for the current distributed network environment; secondly, the network has isomorphism, which cannot prevent suspicious intruders and viruses from spreading rapidly and widely; Sexuality and passivity can no longer adapt to the harsh and changeable network environment. [0003] At present, looking at domestic and foreign research, survivability resea...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a network system, aiming to solve the problem that the intrusion of suspicious programs and the rapid spread of viruses cannot be prevented in the prior art

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