Data one-way transmission system and method between internal and external gateways

Abstract

The invention discloses a system and method for one-way data transmission between internal and external gateways, which judges the legality of the data by retrieving whether the data on the external network contains sensitive keywords; and judges whether to transmit the data according to the judging result of the legality ; At the same time, according to whether the data to be transmitted is received or not, the on-off execution of the optical switch arranged at the initial end of the communication path of the internal and external network is controlled. The optical switch receives control instructions, and decides whether to perform electro-optical conversion work according to the control instructions, so as to realize the on-off control of data transmission between the internal network and the external network, so as to achieve not only physical isolation on the network link, but also The purpose of automatically turning on the link and performing high-speed data transmission when data needs to be transmitted.

Description

technical field [0001] The invention relates to a data transmission technology, in particular to a system and method for one-way data transmission between internal and external gateways. Background technique [0002] In the face of the rapid development of informatization and the increasingly rampant development of network attacks, how to solve the security isolation of the network and the security exchange of data has become a common concern. In order to meet the growing demand for network security, security vendors continue to develop new technologies and have successively developed five generations of isolation technologies. From the first generation of complete isolation, the internal network becomes an information island, the second generation of hardware card isolation, the third generation of data relay isolation, the fourth generation of air switch isolation and the latest fifth generation of safe channel isolation. In the security channel isolation technology, it i...

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of the requirements for network isolation equipment, it is hoped that the network isolation equipment can not only realize physical isolation on the network link, but also automatically turn on the network link when data needs to be transmitted, and perform high-speed data transmission, so as to achieve Higher security, however, cannot be achieved only by relying on one-way light units

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