CN202495044U - USB interface isolation control system for multi-security-domain computer - Google Patents
USB interface isolation control system for multi-security-domain computer Download PDFInfo
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- CN202495044U CN202495044U CN201220003537XU CN201220003537U CN202495044U CN 202495044 U CN202495044 U CN 202495044U CN 201220003537X U CN201220003537X U CN 201220003537XU CN 201220003537 U CN201220003537 U CN 201220003537U CN 202495044 U CN202495044 U CN 202495044U
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- usb interface
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- computer
- control system
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Abstract
The utility model provides a USB interface isolation control system for a multi-security-domain computer and the USB interface isolation control system physically isolates USB interfaces under different security domains, thereby achieving the security access purpose to USB devices. The system comprises a computer USB interface and a plurality of security-domain USB interfaces, wherein the computer USB interface is connected with the plurality of security-domain USB interfaces by a multiplex selector switch. The multiplex selector switch is connected with a control switch for controlling connection of each security-domain USB interface and the computer USB interface. According to the USB interface isolation control system for the multi-security-domain computer provided by the utility model, when the computer accesses a USB interface device, the computer only can access setting corresponding security-domain USB interface, thereby realizing security attribute differentiation of different interfaces and individual USB interface of internal network and external network. The USB interface isolation control system is good in universality, low in cost and simple in use.
Description
Technical field
The utility model relates to a kind of computer control system, especially a kind of many security domains USB interface of computer isolation control system.
Background technology
Computer system with many security domains; For example have in the system of intranet and extranet separation; At aspects such as network interface, hard-disc storage interfaces corresponding solution has been arranged; After the system start-up,, caused the unsafe factor of equipment such as external USB storage, USB printing because the system of each level of security all can conduct interviews to all USB interfaces.
The utility model content
The utility model provides a kind of physical isolation of the USB interface under different security domains, thereby reaches the many security domains USB interface of computer isolation control system to the secure access purpose of USB device.
Realize many security domains USB interface of computer isolation control system of the utility model purpose; Comprise computing machine USB interface and a plurality of security domain USB interface; Said computing machine USB interface links to each other with a plurality of security domain USB interfaces through multidiameter option switch; Said multidiameter option switch is connected with a CS, is used to control being connected of each security domain USB interface and computing machine USB interface.
Said multidiameter option switch can be realized isolating between the different security domain USB ports through control USB power supply and/or usb data signal wire.
Said multidiameter option switch can use relay, triode, switching device or special-purpose USB switching device.
The beneficial effect of many security domains USB interface of computer isolation control system of the utility model is following:
Many security domains USB interface of computer isolation control system of the utility model; The USB interface control device is applied on the computing machine; On this electronic installation, there are many groups to have the interface of different access security attribute, also are connected with a switch that is used to select security domain on this wiring board, when this switch places a certain state; There are and only have a group interface and computer-internal interface to be communicated with in many group interfaces on the wiring board; When computer access USB interface equipment, only can visit the USB interface equipment of the corresponding security domain that sets like this, thereby the security attribute of realizing distinct interface is distinguished; Realize the independent USB interface of intranet and extranet, versatility is good, cost is low, easy to use.
Description of drawings
Fig. 1 is the structural representation of many security domains USB interface of computer isolation control system of the utility model.
Embodiment
As shown in Figure 1; Many security domains USB interface of computer isolation control system of the utility model; Comprise computing machine USB interface and a plurality of security domain USB interface; Said computing machine USB interface links to each other with a plurality of security domain USB interfaces through multidiameter option switch, and said multidiameter option switch is connected with a CS, is used to control being connected of each security domain USB interface and computing machine USB interface.
Multidiameter option switch can be realized isolating between the different security domain USB ports through control USB power supply and/or usb data signal wire.Multidiameter option switch can use relay, triode, switching device or special-purpose USB switching device.
The principle of work of many security domains USB interface of computer isolation control system of the utility model is following:
Multidiameter option switch realizes how controlling to one selections, CS is the control signal of multidiameter option switch.When CS is selected first security domain, first group of security domain USB interface will be connected on the USB interface of computer, and when CS is selected second security domain, second group of security domain USB interface will be connected on the USB interface of computer, by that analogy.At any one constantly; There is and have only the USB interface of one group of security domain USB interface and calculating to be connected; Each security domain USB interface all is complete Network Isolation at any time, thereby the USB interface that has guaranteed each security domain is separate, reaches the purpose of USB device secure access.
USB has 4 lines, two power leads, two signal wires.Multidiameter option switch can only be realized the control to power lead, through the external USB device power-on of non-selected security domain not being realized isolating; Also can realize the isolation fully of the data signal line between each security domain USB interface through the selection of control signal wire; Further, multidiameter option switch can be selected control completely to 4 lines, realizes the isolation fully of all electric signals of each security domain USB interface.
Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineering technical personnel in this area make the utility model technical scheme all should fall in the protection domain that claims of the utility model confirm.
Claims (3)
1. the isolation control system of security domain USB interface of computer more than a kind; It is characterized in that: comprise computing machine USB interface and a plurality of security domain USB interface; Said computing machine USB interface links to each other with a plurality of security domain USB interfaces through multidiameter option switch; Said multidiameter option switch is connected with a CS, is used to control being connected of each security domain USB interface and computing machine USB interface.
2. many security domains USB interface of computer isolation control system according to claim 1 is characterized in that: said multidiameter option switch can be realized isolating between the different security domain USB ports through control USB power supply and/or usb data signal wire.
3. many security domains USB interface of computer isolation control system according to claim 1 is characterized in that: said multidiameter option switch can use relay, triode, switching device or special-purpose USB switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220003537XU CN202495044U (en) | 2012-01-06 | 2012-01-06 | USB interface isolation control system for multi-security-domain computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220003537XU CN202495044U (en) | 2012-01-06 | 2012-01-06 | USB interface isolation control system for multi-security-domain computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495044U true CN202495044U (en) | 2012-10-17 |
Family
ID=47001259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220003537XU Expired - Fee Related CN202495044U (en) | 2012-01-06 | 2012-01-06 | USB interface isolation control system for multi-security-domain computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495044U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049715A (en) * | 2013-01-04 | 2013-04-17 | 上海瑞达安全集成电路有限公司 | Computer capable of controlling enabling of peripherals |
| CN106484651A (en) * | 2016-10-21 | 2017-03-08 | 国网黑龙江省电力有限公司信息通信公司 | Usb switching device and method |
| CN106774109A (en) * | 2016-11-22 | 2017-05-31 | 青岛大学 | A kind of signal circuit and terminal board with defencive function |
| CN106773903A (en) * | 2016-11-22 | 2017-05-31 | 青岛大学 | A kind of signal circuit and terminal board |
-
2012
- 2012-01-06 CN CN201220003537XU patent/CN202495044U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049715A (en) * | 2013-01-04 | 2013-04-17 | 上海瑞达安全集成电路有限公司 | Computer capable of controlling enabling of peripherals |
| CN106484651A (en) * | 2016-10-21 | 2017-03-08 | 国网黑龙江省电力有限公司信息通信公司 | Usb switching device and method |
| CN106774109A (en) * | 2016-11-22 | 2017-05-31 | 青岛大学 | A kind of signal circuit and terminal board with defencive function |
| CN106773903A (en) * | 2016-11-22 | 2017-05-31 | 青岛大学 | A kind of signal circuit and terminal board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20130106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |