Network communication system

Abstract

The invention relates to a network communication system. The system is characterized in that the system comprises at least a front isolator in the office network segment and rear isolators in the transaction network segment, wherein the front isolator / isolators is / are connected with the internet; the front isolator / isolators and the rear isolators are connected via USB connection lines; application program interfaces (APIs) are adopted at the two ends of each USB connection line; and the front isolator / isolators and the rear isolators transfer data by adopting private protocols. The system has the following advantages: the computers connected with the internet and the computers connected with the internal local area network (LAN) are separated from each other and are connected with each other via special USB connection lines, the private protocols are adopted for data interaction, and the USB connection lines adopt non-standard APIs and the security is high, thus effectively preventing the information data in the internal LAN from being illegally stolen by the undesirable internet users.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a network communication system capable of ensuring communication safety. Background technique [0002] In recent years, with the rapid development of information technology in our country, the application of e-government has become more and more extensive. Units using e-government (such as industry and commerce, taxation, banking, military, etc.) need to rely on network communication systems to handle daily affairs. On the one hand, the unit's network communication system must be connected to the Internet to exchange information with the outside world through the Internet; on the other hand, it must be connected internally to form a local area network for internal data transmission. However, because many confidential information related to the state and individuals are stored in the internal LAN of the above-mentioned users, the network communication system is required to ens...

AI Technical Summary

Problems solved by technology

[0004] The internal LAN and the Internet are connected through a gateway. The internal LAN and the Internet are based on the TCP / IP protocol for information exchange. Data information is transmitted on the network in plain text. Unscrupulous Internet users may break through the barrier of the firewall through repeated trials and analysis. , Intercept the data information of the internal LAN on the gateway, resulting in the leakage of confidential information

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