CN2544474Y

CN2544474Y - Intelligent network safety isolation switch

Info

Publication number: CN2544474Y
Application number: CN 02211422
Authority: CN
Inventors: 孙冰
Original assignee: LIAONING YIZHAN ONLINE INFORMATION TECHNOLOGY Co Ltd
Current assignee: LIAONING YIZHAN ONLINE INFORMATION TECHNOLOGY Co Ltd
Priority date: 2002-04-23
Filing date: 2002-04-23
Publication date: 2003-04-09
Anticipated expiration: 2012-04-23

Abstract

The utility model relates to an intelligent network safety isolation switch which is composed of a case body and a control circuit, wherein the control circuit comprises a central controller circuit, an interface circuit, a drive circuit, a relay switch block circuit, a power source circuit, an outer net interface socket, an inner net computer interface socket and a control computer interface socket; the case body comprises a power source interface, a control computer interface socket, a computer network card interface, an outer net interface socket, an inner net computer interface socket and an indicating light. The control computer sends an on-or-off instruction to the intelligent network safety isolation switch through the interface. The intelligent network safety isolation switch controls the state of the switch through a computer. The switch switches on or off the connecting circuit of the computer through a relay, and physical isolation is realized. When data is transmitted to the inner network, a serial port one-way transmission mode is adopted, and the data can only be transmitted toward the inner network, but the inner network can not transmit the data to the outer network; thus the information security of the inner network is ensured.

Description

The intelligent network safety isolated switch

Technical field:

The utility model relates to a kind of control switch, particularly a kind of isolating switch that is used for network security.

Background technology:

Along with Internet development, network information will more and more be much accounted of, and it will be used as the fourth media and extensively be utilized by units such as each news unit and Party and government offices.How under the situation of safety, to use network information just to become key issue.If can when information search, adopt a kind of switch that in-house network is closed, after search finishes, again outer net is closed the connection Intranet, to inner Netcom news the time, use the one-way communication mode, so just can solve the physical isolation problem, reach solution internal network information security.

Summary of the invention:

The purpose of this utility model is to propose the switch that is provided with on a kind of network connection.This switch adopts relay drive circuit, realizes the intranet and extranet safety communication.

The purpose of this utility model is achieved through the following technical solutions: the intelligent network safety isolated switch is made up of housing and control circuit.This control circuit mainly includes: central control circuit, interface circuit, drive circuit, relay switch group circuit, power circuit, outer net interface socket, inner net computer interface socket, control computer interface socket.This housing one side is provided with power interface, control computer interface socket, computer network interface card interface, outer net interface socket, and opposite side is provided with inner net computer interface socket, outer net interface socket, control computer interface socket, and is provided with indicator light on panel.

The intelligent network safety isolated switch is the state that comes control switch by computer, and switch then is the connection line that turns on and off computer with relay, has realized physical isolation.To inner transmitted data on network the time, employing be serial ports one-way transmission mode, can only transmit data to in-house network, in-house network can not transmit data to extranets, has guaranteed the information security of internal network.Owing to adopted relay interlock mode, can not occur connecting the state of intranet and extranet simultaneously.When outer net was communicated with, serial ports was closed, by special line or telephone wire transmission data.When outer net disconnected, serial ports was opened, and transmitted data by controlling computer to Intranet, had guaranteed the safe, reliable of Intranet information.

Description of drawings:

Accompanying drawing 1 of the present utility model is product casing figure;

Accompanying drawing 2 of the present utility model is the product circuit pie graph;

Accompanying drawing 3 of the present utility model is in the product circuit, the central control circuit schematic diagram;

Accompanying drawing 4 of the present utility model is in the product circuit, the interface circuit schematic diagram;

Accompanying drawing 5 of the present utility model is in the product circuit, the drive circuit schematic diagram;

Accompanying drawing 6 of the present utility model is in the product circuit, the relay unit circuit schematic diagram;

Accompanying drawing 7 of the present utility model is in the product circuit, power circuit principle figure;

Accompanying drawing 8 of the present utility model is that product is connected application drawing with outside line.

Embodiment:

Circuit in the utility model product circuit pie graph includes: central control circuit (1), interface circuit (2), drive circuit (3), relay switch group circuit (4), power circuit (5), outer net interface socket (6), inner net computer interface socket (7), control computer interface socket (8).Product shell (10) is provided with: power interface (11), control computer interface socket (8), computer network interface card interface (9), outer net interface socket (6), inner net computer interface socket (7), outer net interface socket (6), control computer interface socket (8), and on panel, be provided with indicator light (12).The control computer sends to the intelligent network safety isolated switch by interface socket (8) and opens or closes instruction, this instruction is passed to central control circuit (1) by interface circuit (2), central control circuit (1) is through after discerning, transmission opens or closes instruction, drive opening or closing of relay switch group circuit (4) through overdrive circuit (3), finish control computer and outer net or with being connected of internal network, carry out the data transmission under the situation that the control computer can not be simultaneously with intranet and extranet are connected, avoid hacker's attack.Central controller circuit (1) can adopt multiple model; Interface circuit (2), drive circuit (3), power circuit (5) can adopt various ways; Relay switch group circuit (4) or use the switch of other form to form by multichannel, but the relay switch group circuit (4) with being connected with inner net computer interface socket (7) that is connected with outer net interface socket (6) can not be in the state that opens or closes simultaneously; Outer net interface socket (6) and control computer interface socket (8) can adopt telephone jack or network interface card joint or other joints; Inner net computer interface socket (7) and control computer interface socket (8) can adopt serial ports joint or 25 pin parallel port joints or other joints of 9 pins.Be to send instruction by control computer interface socket (8) to the central controller circuit (1) of intelligent network safety isolated switch, its communication speed can be 9600bps or other speed; Command format can define arbitrarily.Inner net computer interface socket (7) and control computer interface socket (8) can be both-way communication mode and one-way communication mode.

During use,, determine the connected mode of intelligent network safety isolated switch according to the connected mode of you and outer net internet:

Mode one: if you are by special line or shared proxy surfing, please insert the outer network interface of intelligent network safety isolated switch so, the computer network interface card interface of intelligent network safety isolated switch is connected with computer from the outlet of router or hub;

Mode two: if you dial up on the telephone by telephone wire, so please telephone wire is inserted the telephone line interface of switch, the modulatedemodulate bar device port of intelligent network safety isolated switch is connected with the modulatedemodulate bar device of computer.

Computer serial interface with the intelligent network safety isolated switch is connected with computer then, and the Intranet computer serial interface of intelligent network safety isolated switch is connected with any computer in the in-house network.

After checking that connection is errorless, energized by program control, is carried out intranet and extranet automatically and is switched, and the intelligent network safety isolated switch can present two states:

State one: when following two row's indicator lights were bright, expression was communicated with outer net, and with the Intranet disconnection, at this moment outer net and Intranet are in physical segregation state fully without any being connected;

State two: when following row's indicator light was bright, expression disconnected with outer net, with Intranet serial ports unilaterally connected, transmits data by two line Serial Port Lines to Intranet, and at this moment, outer net and Intranet are in physical segregation state fully also without any being connected.

Claims

1. the intelligent network safety isolated switch is made up of housing and control circuit, it is characterized in that: this control circuit includes: central control circuit (1), interface circuit (2), drive circuit (3), switches set circuit (4), power circuit (5), outer net interface socket (6), inner net computer interface socket (7), control computer interface socket (8).

2. intelligent network safety isolated switch as claimed in claim 1, it is characterized in that: described housing (10) one sides are provided with power interface (11), control computer interface socket (8), computer network interface card interface (9), outer net interface socket (6), opposite side is provided with inner net computer interface socket (7), outer net interface socket (6), control computer interface socket (8), and is provided with indicator light (12) on panel.