Dual-network isolation switching mechanism and method for network computer

Abstract

The invention discloses a network computer double net isolation switching device and a switching method, which mainly realizes the secure physical isolation visit of two different networks using the network computer, and realizes the automatic transparent switching visit of the two networks using the software method. The switching device is composed of two same data signal transmitting branch, a trigger (2), a chip integrated with MAC (101) and GPIO (102), wherein each data signal transmitting branch is composed of a physical layer controller PHY (3), a transformer (4), a RJ45 interface (5) connected serially in turn. One spare pin of the GPIO (102) is set as 0 or 1 through the software method, which transmits the signals if high lever or the low level to the trigger (2), drives the trigger (2) to alternately gate two data signal transmitting branches. According to the invention, the secure isolation visit to the inner and the outer nets is conveniently realized, with low cost and increased working efficiency.

Description

technical field [0001] The invention relates to the technical fields of computer network and information security, in particular to a dual-network isolation switching device and switching method for network computers. Background technique [0002] The wide application of information technology and the openness of the Internet and the information sharing environment have brought abundant resources to people, but also brought potential security threats. A series of security problems such as hackers and computer viruses seriously threaten network security, and a little carelessness will cause major losses. At present, in many systems such as office automation, e-government and e-commerce, the intranet and extranet are isolated to protect important data, and at the same time access the Internet to obtain various information. Generally, the following solutions are adopted: one is to establish two independent networks for each user, and each user’s desk is equipped with two PCs, ...

AI Technical Summary

Problems solved by technology

Generally, the following solutions are adopted: one is to establish two independent networks for each user, and each user’s desk is equipped with two PCs, which are respectively connected to the internal network and the external network. The disadvantage of this method is that the cost of resetting the computer equipment is high , takes up space

The second is dual hard disks, dual network cards, physical switching switch A / B exchange box, and two sets of independent hardware devices are installed in one chassis. The disadvantage of this method is that there are two sets of equipment in one chassis, which is technically unreasonable and expensive.

Since the ultimate purpose of this method is to connect to the server, the smart card only saves the connection information, but cannot automatically switch the network, requiring the user to manually switch the physical connection

There is also the patent No. 200410051651.X published by the Chinese Patent Office for the "Network Switching Method in Multiple Networks". switch in the network

[0005] Most of the existing methods rely on physical devices and require manual modification by the user. Such frequent manual operations often make the user feel too cumbersome, and the waiting time for switching outside the connection server will also increase the boredom of the user, causing many problems for the user. Inconvenience

The storage of connection information is often by means of additional physical storage devices, which increase the management burden of users and the cost of products

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