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Method and system of implementing secure communication between internal and external computer networks based on simplex communication principle

A technology of simplex communication and secure communication, which is applied in the field of secure communication between LAN and WAN, which can solve the problems of inconvenient use, inability to communicate directly, poor security when directly connected, etc., to block erosion and ensure timely and rapid release , the effect of solving security problems

Inactive Publication Date: 2006-07-26
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a method based on the principle of simplex communication to realize the problem that the direct connection between the existing internal network and the external network has poor security, inconvenient use and inability to communicate directly when physically isolated. Method and system for secure communication between extranets

Method used

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  • Method and system of implementing secure communication between internal and external computer networks based on simplex communication principle
  • Method and system of implementing secure communication between internal and external computer networks based on simplex communication principle
  • Method and system of implementing secure communication between internal and external computer networks based on simplex communication principle

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specific Embodiment

[0049] Intranet: It can be the internal network system of each unit system, the internal system of the bank's internal LAN, chemical automatic process control, etc.

[0050] Extranet: Internet

[0051] Intranet computers are ordinary PCs.

[0052] The external security control computer can adopt a single-chip microcomputer (such as 80C51, etc.) or an embedded system (such as Arm9, etc.).

[0053] Now there is an intranet for chemical automatic process control, which has connected all equipment with one-way connection lines and connected to the Internet.

[0054] First of all, for various attacks on the external network (including computer viruses), the security of the internal network is completely equivalent to the strict physical isolation of the internal and external networks. Any attack on the internal network (including computer viruses) virus) are completely blocked. Equally, the attack (comprising computer virus) of internal and external network external security con...

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Abstract

This invention discloses one method and system to realize computer inside and outside network safe communication based on single machine communication computer, which prevents physical outside network to steal and damage inner net information by establishing single direction transmission wire between inner and outer net and outer computer and at same time establishes outer safety control computer for coding to realize inner net transmission safety management.

Description

technical field [0001] The present invention relates to a computer communication method and system, in particular to a method and system for realizing secure communication between a local area network (i.e., an internal network) and a wide area network (i.e., an external network). A method and system for secure communication between computer internal and external networks. Background technique [0002] Computer networks are widely used in many fields such as e-government, e-commerce, and automatic control. With the development of the Internet, more and more computers are connected to the Internet. Viruses and Trojan horse programs that mainly rely on the network to spread are becoming more and more worrying today when network communications are becoming more and more popular. Connections without security guarantees will expose users' computers to intrusions, attacks by criminals, and other threats on the Internet. serious threat. The main content of information security re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L12/24
Inventor 宫宁生帅仁俊
Owner NANJING UNIV OF TECH
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