Cooperative protection system of security of electric power wide area Internet and protection method thereof

Abstract

The invention relates to a cooperative protection system of security of an electric power wide area Internet and a protection method thereof. A hardware system of cooperative protection is constituted by increasing two main functional entities, namely a fusion security access gateway and a virtual reconstruction security control server, a software logic system of cooperative protection is realized by policy subscription, an evidence synthesis approximation algorithm is researched, an evidence projection decomposition method is designed, and a credibility transfer formula is deduced. Therefore, various peripheral networks in the electric power wide area Internet can securely access to a security service platform located in an IP core network through the existing heterogeneous access networks through the security access gateway, and security service commands and data can also be sent to frontier nodes.

Description

technical field [0001] The invention relates to a network security protection system, in particular to a power wide-area Internet security collaborative protection system and a protection method thereof. Background technique [0002] At present, the international network security situation is becoming more and more severe. Cyberspace has become the fifth territory of the country after the four territories of land, sea, air, and space. The trend of network attacks being grouped and nationalized is increasingly obvious. Due to the complex and diverse structure of the power system, wide distribution, high importance and integrated wide-area interconnection, once the power system is paralyzed and has a huge impact, it is very easy to become the first choice for hostile forces to attack. In recent years, with the introduction of a large number of "Internet +" technologies represented by cloud computing, Internet of Things, and big data, and the access of a large number of smart t...

AI Technical Summary

Problems solved by technology

One is the access of a large number of smart terminal devices, using a large number of wireless communication methods such as WIFI, 3G / 4G, etc., the basic environment of the power network has also changed, and the network boundary has become increasingly blurred. The traditional border security protection scope can no longer guarantee the security of power smart terminals.

Second, new changes have taken place in the acquisition methods, storage forms, transmission channels, and processing methods of power-related information. Application virtualization, data assetization, and terminal mobility will all introduce new information network security risks. Exposure is increasing rapidly

At the same time, new attack methods represented by advanced persistent network attacks (APT) are also constantly evolving, all of which pose severe challenges to the security protection of power information networks

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