CN103902928B - Network physical isolation device - Google Patents
Network physical isolation device Download PDFInfo
- Publication number
- CN103902928B CN103902928B CN201410112591.1A CN201410112591A CN103902928B CN 103902928 B CN103902928 B CN 103902928B CN 201410112591 A CN201410112591 A CN 201410112591A CN 103902928 B CN103902928 B CN 103902928B
- Authority
- CN
- China
- Prior art keywords
- switching tube
- switch
- connects
- extremely
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/72—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits
Abstract
The invention discloses a network physical isolation device. The network physical isolation device comprises a south-bridge chip, a first GPIO (general purpose input/output) port of the south-bridge chip is connected with one end of a switch, a second GPIO port of the south-bridge chip is connected with a control electrode of a switch tube, a first connecting electrode of the switch tube is grounded, a second connecting electrode of the switch tube is connected with a negative electrode of a light emitting diode, a positive electrode of the light emitting diode and the other end of the switch are jointly connected with one end of a bias resistor, the other end of the bias resistor is connected with a power source, and the output end of the integral isolation device is arranged at the negative electrode of the light emitting diode. A wireless local area network card in a MINI PCIE (peripheral component interface express) slot and a Bluetooth controller can be turned off at the same time by matching of the GPIO port of the south-bridge chip and the external switch, the switch tube and the light emitting diode, and risk of network invasion of computers is reduced.
Description
Technical field
The present invention relates to a kind of network physical isolation apparatus, belong to pc domain.
Background technology
Along with development and the progress of science and technology, more and more concerning security matters departments all establish internal computer network.
Owing to these internal networks are directed to substantial amounts of secret information, therefore in the engineering building Intranet, safe and secret
It it is an important step.Concerning security matters departments at different levels are that this also formulates and take corresponding system and measure, wherein,
With public network, regulation Intranet must accomplish that physical isolation is an important measure.
The cable network connection of PC is easier to do physical isolation.But the kind analogy that wireless network connects
More, such as WIFI, bluetooth etc..Each wireless communication protocol has its respective transceiver controller.This
On the mainboard being arranged in PC that a little controllers are separate, it is generally difficult to together turn off or on.And not
All wireless connections can be simultaneously closed off and then can bring intrusion risk to computer.
Summary of the invention
Goal of the invention: the present invention proposes a kind of network physical isolation apparatus, at synchronization by WIFI and bluetooth
Simultaneously close off.
Technical scheme: the technical solution used in the present invention is a kind of network physical isolation apparatus, including South Bridge chip,
First GPIO port of described South Bridge chip is connected with one end of switch, and the second GPIO port of South Bridge chip is even
Receiving the control pole of switching tube, described switching tube first connects pole ground connection, and switching tube second connects pole and is connected to send out
The negative pole of optical diode, the positive pole of light emitting diode and the other end of switch are together connected to the one of biasing resistor
End, another termination power of biasing resistor, the outfan of whole isolating device is positioned at light emitting diode negative pole.
As a modification of the present invention, stating switching tube is NMOS tube or PMOS, and switching tube first connects pole
For source electrode, switching tube second connects and extremely drains, switch controlled extremely grid.
Another as the present invention is improved, and described switching tube is NPN type or PNP type triode, switching tube the
One connects extremely emitter stage, and switching tube second connects extremely colelctor electrode, switch controlled extremely base stage.
Beneficial effect: the present invention is by the GPIO port of South Bridge chip and external switch, switching tube and luminescence
The cooperation of diode, it is achieved that synchronization closes the wireless network card in MINI-PCIE slot and Bluetooth control
Device, reduces the risk that computer is invaded by network.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structural representation of the embodiment of the present invention two.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are only used for
The present invention is described rather than limits the scope of the present invention, after having read the present invention, those skilled in the art
Amendment to the various equivalents of the present invention all falls within the application claims limited range.
Embodiment 1: the South Bridge chip of computer motherboard has multiple GPIO port, can be as input or output
Low and high level uses.Onboard NIC controller on mainboard is able to receive that external signal is with shutdown or startup bluetooth even
Connect, and the 51st pin of the MINI-PCIE slot on mainboard also has reception external signal, insert to close
Wireless WIFI network interface card in groove and the function of bluetooth network interface card.The source ground of NMOS tube Q4, its grid connects
To second GPIO port 2 of South Bridge chip PCH, its 51st pin with MINI-PCIE slot that drains,
26th pin of Onboard NIC controller and the negative pole of light emitting diode D5 link together.South bridge core
First GPIO port 1 of sheet is connected to switch one end of SW.The other end of switch SW and light emitting diode D5
Positive pole and one end of biasing resistor link together.Another termination power VCC of biasing resistor R.
Switch SW is in normally open.Unclamp after user presses switch SW, i.e. provide a high level pulse.
Then the first GPIO port 1 is essentially pulled up to high level by biasing resistor R, and South Bridge chip is the most simultaneously by the 2nd GPIO
The voltage of port 2 changes high level into.Thus the conducting of NMOS tube Q4, by the 51st of MINI-PCIE slot the
26th pin of pin, the negative pole of light emitting diode D5 and Onboard NIC controller is pulled down to low level.
Thus realize simultaneously closing off wireless WIFI network interface card, bluetooth and Onboard NIC, and light light emitting diode D5.
Physical isolation cannot use software to connect to recover network after completing, can only again press switch SW
Unclamp again, apply a high level pulse to the first GPIO port 1.Then South Bridge chip the second GPIO port 2
Voltage become low level, make NMOS tube Q4 end, the 51st pin of MINI-PCIE slot, luminescence
The negative pole of diode D5 and the 26th pin of Onboard NIC controller become high-impedance state.
The grounded emitter of the audion T4 of embodiment 2:NPN type, its colelctor electrode is connected to South Bridge chip PCH
The second GPIO port 2, its base stage and the 51st pin of MINI-PCIE slot, Onboard NIC control
26th pin of device and the negative pole of light emitting diode D5 link together.Oneth GPIO of South Bridge chip
Port 1 is connected to switch one end of SW.The positive pole of the other end and the light emitting diode D5 of switch SW and
One end of biasing resistor links together.Another termination power VCC of biasing resistor R.
Switch SW is in normally open.It is made to close when user presses switch SW, then the first GPIO port 1
Being essentially pulled up to high level by biasing resistor R, the voltage of the second GPIO port 2 is changed by South Bridge chip the most simultaneously
For high level.Thus audion T4 conducting, by the 51st pin of MINI-PCIE slot, light-emitting diodes
The negative pole of pipe D5 and the 26th pin of Onboard NIC controller are pulled down to low level.Thus realize simultaneously
Close wireless WIFI network interface card, bluetooth and Onboard NIC, and light light emitting diode D5.
Physical isolation cannot use software to connect to recover network after completing, can only again press switch SW
Unclamp again, apply a high level pulse to the first GPIO port 1.Then South Bridge chip the second GPIO port 2
Voltage become low level, make audion T4 end, the 51st pin of MINI-PCIE slot, luminescence
The negative pole of diode D5 and the 26th pin of Onboard NIC controller become high-impedance state.
Claims (5)
1. a network physical isolation apparatus, inserts including South Bridge chip, Onboard NIC controller, MINI-PCIE
Groove, it is characterised in that the first GPIO port of described South Bridge chip is connected with one end of switch, South Bridge chip
The second GPIO port be connected to the control pole of switching tube, described switching tube first connects pole ground connection, switching tube
Second connect pole be simultaneously connected to the negative pole of light emitting diode, the 26th pin of Onboard NIC controller and
51st pin of MINI-PCIE slot, the positive pole of light emitting diode is together connected to the other end of switch
One end of biasing resistor, another termination power of biasing resistor, the outfan of whole isolating device is positioned at luminous two
Pole pipe negative pole.
Network physical isolation apparatus the most according to claim 1, it is characterised in that described switching tube is
NMOS tube, switching tube first connects extremely source electrode, and switching tube second connects and extremely drains, switch controlled pole
For grid.
Network physical isolation apparatus the most according to claim 1, it is characterised in that described switching tube is
NPN type triode, switching tube first connects extremely emitter stage, and switching tube second connects extremely colelctor electrode, switch
Management and control system extremely base stage.
Network physical isolation apparatus the most according to claim 1, it is characterised in that described switching tube is
PMOS, switching tube first connects extremely source electrode, and switching tube second connects and extremely drains, switch controlled pole
For grid.
Network physical isolation apparatus the most according to claim 1, it is characterised in that described switching tube is
PNP type triode, switching tube first connects extremely emitter stage, and switching tube second connects extremely colelctor electrode, switch
Management and control system extremely base stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112591.1A CN103902928B (en) | 2014-03-24 | 2014-03-24 | Network physical isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112591.1A CN103902928B (en) | 2014-03-24 | 2014-03-24 | Network physical isolation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103902928A CN103902928A (en) | 2014-07-02 |
| CN103902928B true CN103902928B (en) | 2017-01-11 |
Family
ID=50994241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410112591.1A Active CN103902928B (en) | 2014-03-24 | 2014-03-24 | Network physical isolation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103902928B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301804B (en) * | 2016-09-09 | 2019-05-14 | 郑州云海信息技术有限公司 | A kind of server that realizing Wake on LAN, system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291879A (en) * | 2011-05-19 | 2011-12-21 | 惠州Tcl移动通信有限公司 | Control circuit, method and device for charging indicator light as well as charging device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2735426Y (en) * | 2004-07-15 | 2005-10-19 | 联想(北京)有限公司 | Real-time clock feed circuit capable of clearing CMOS settings |
| CN2833715Y (en) * | 2005-03-07 | 2006-11-01 | 联想(北京)有限公司 | Wireless terminal with wireless network card state display |
| CN201061142Y (en) * | 2007-04-17 | 2008-05-14 | 海尔集团公司 | Protector for power supply flexible starting instant power off anti-restarting |
| CN102413001B (en) * | 2011-12-29 | 2014-04-30 | 深圳华北工控股份有限公司 | Intelligent BYPASS system |
| CN203882315U (en) * | 2014-03-24 | 2014-10-15 | 同方计算机有限公司 | Network physical isolation device |
-
2014
- 2014-03-24 CN CN201410112591.1A patent/CN103902928B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291879A (en) * | 2011-05-19 | 2011-12-21 | 惠州Tcl移动通信有限公司 | Control circuit, method and device for charging indicator light as well as charging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103902928A (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102380100B1 (en) | Reversible connector for accessory devices | |
| US10162723B2 (en) | Electronic card and detecting method thereof | |
| CN101989246A (en) | Electronic device capable of automatically switching master and slave equipment modes of universal serial bus (USB) | |
| CN105700732A (en) | Apparatus, system and method for communication of touch sensor information | |
| US20140068342A1 (en) | Wireless Debugging and Updating of Firmware | |
| CN103532541A (en) | Light module power supply control method and system | |
| US20160004526A1 (en) | Bridge module for updating basic input/output system and updating method thereof | |
| TWI509410B (en) | Computer host and network communication setting method thereof | |
| US10198368B2 (en) | Solid state drive control device and method | |
| CN202394228U (en) | USB (Universal Serial Bus) equipment | |
| TWI574149B (en) | Interface supply circuit | |
| CN108701106A (en) | A kind of data transmission method and equipment | |
| US20170192916A1 (en) | Automatic usb identification and communication system with star architecture and method thereof | |
| CN107515341B (en) | Test board | |
| CN102117253A (en) | System and method thereof for multiplexing inter-integrated circuit (IIC) devices with identical address | |
| CN203117884U (en) | Embedded system for multi-module sequential control | |
| CN103902928B (en) | Network physical isolation device | |
| WO2016197883A1 (en) | Method and system for updating program of microcontroller online | |
| CN104270203A (en) | SFF double-light-emitting module with DDM function and optical communication system | |
| CN104536514A (en) | Server with selective switch management network connection function | |
| EP3084976B1 (en) | Configurable transceiver circuit architecture | |
| US20140143466A1 (en) | Computer capable of protecting cpu | |
| CN203882315U (en) | Network physical isolation device | |
| US20180329846A1 (en) | Inter-device digital audio | |
| US9804986B2 (en) | Device for switching between communication modes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |