CN203882315U - Network physical isolation device - Google Patents
Network physical isolation device Download PDFInfo
- Publication number
- CN203882315U CN203882315U CN201420134371.4U CN201420134371U CN203882315U CN 203882315 U CN203882315 U CN 203882315U CN 201420134371 U CN201420134371 U CN 201420134371U CN 203882315 U CN203882315 U CN 203882315U
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- China
- Prior art keywords
- switching tube
- connects
- emitting diode
- south bridge
- physical isolation
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- 238000002955 isolation Methods 0.000 title claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model discloses a network physical isolation device which comprises a south bridge chip. A first GPIO 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 to a control electrode of a switching tube, a first connection electrode of the switching tube is grounded, a second connection electrode of the switching tube is connected to a cathode of a light-emitting diode, an anode of the light-emitting diode and the other end of the switch are connected to one end of a biasing resistor together, the other end of the biasing resistor is connected with a power source, and the output end of the whole isolation device is located at the cathode of the light-emitting diode. According to the network physical isolation device, the GPIO ports of the south bridge chip are matched with the external switch, the switching tube and the light-emitting diode, a wireless network card and a Bluetooth controller in a MINI PCIE slot can be turned off at the same time, and the risk that a computer is invaded by networks 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 scientific and technological development and progress, the concerning security matters that get more and more department has all set up internal computer network.Because these internal networks all relate to a large amount of secret informations, therefore, in building the engineering of Intranet, safe and secret is an important step.Concerning security matters at different levels department also formulates for this reason and has taked corresponding system and measure, and wherein, regulation Intranet must accomplish that physical isolation is an important measure with public network.
The cable network of PC connects than being easier to do physical isolation.But the kind that wireless network connects is many, such as WIFI, bluetooth etc.Each wireless communication protocol has its transceiver controller separately.On the mainboard that is arranged in PC that these controllers are separate, be conventionally difficult to together close or open.Can not close all wireless connections simultaneously and can bring intrusion risk to computing machine.
Summary of the invention
Goal of the invention: the present invention proposes a kind of network physical isolation apparatus is closed WIFI and bluetooth at synchronization simultaneously.
Technical scheme: the technical solution used in the present invention is a kind of network physical isolation apparatus, comprise South Bridge chip, the one GPIO port of described South Bridge chip is connected with one end of switch, the 2nd GPIO port of South Bridge chip is connected to the control utmost point of switching tube, described switching tube first connects utmost point ground connection, switching tube second connects the negative pole that the utmost point is connected to light emitting diode, the positive pole of light emitting diode and the other end of switch are together connected to one end of biasing resistor, another termination power of biasing resistor, the output terminal of whole spacer assembly is positioned at light emitting diode negative pole.
As a modification of the present invention, stating switching tube is NMOS pipe or PMOS pipe, and switching tube first connects very source electrode, and switching tube second connects very drain electrode, and switch controlled is grid very.
As another improvement of the present invention, described switching tube is NPN type or positive-negative-positive triode, and switching tube first connects very emitter, and switching tube second connects very collector, and switch controlled is base stage very.
Beneficial effect: the present invention is by the GPIO port of South Bridge chip and coordinating of external switch, switching tube and light emitting diode, realize synchronization and closed wireless network card and the bluetooth controller in MINI-PCIE slot, reduced the risk that computing machine 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.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of various equivalents of the present invention.
Embodiment 1: the South Bridge chip of computer motherboard has a plurality of GPIO ports, can be used as and inputs or outputs low and high level use.Onboard NIC controller on mainboard can receive external signal and connect to cut out or to start bluetooth, and the 51 pin of MINI-PCIE slot on mainboard also has reception external signal, to close wireless WIFI network interface card in slot and the function of bluetooth network interface card.The source ground of NMOS pipe Q4, its grid is connected to the 2nd GPIO port 2 of South Bridge chip PCH, and its drain electrode links together with the 51 pin, the 26 pin of Onboard NIC controller and the negative pole of light emitting diode D5 of MINI-PCIE slot.The one GPIO port one of South Bridge chip is connected to one end of interrupteur SW.The positive pole of the other end of interrupteur SW and light emitting diode D5 and one end of biasing resistor link together.Another termination power VCC of biasing resistor R.
Interrupteur SW is in normally open.After user presses interrupteur SW, unclamp, provide a high level pulse.A GPIO port one by biasing resistor R by move high level to, South Bridge chip changes the voltage of the 2nd GPIO port 2 into high level simultaneously.Thereby NMOS pipe Q4 conducting, the 51 pin of MINI-PCIE slot, the negative pole of light emitting diode D5 and the 26 pin of Onboard NIC controller are pulled down to low level.Thereby realize and close wireless WIFI network interface card, bluetooth and Onboard NIC simultaneously, and light light emitting diode D5.
After physical isolation completes, cannot recover network with software and connect, can only again press interrupteur SW and unclamp again, apply a high level pulse to a GPIO port one.The voltage of South Bridge chip the 2nd GPIO port 2 becomes low level, makes NMOS pipe Q4 cut-off, and the 51 pin of MINI-PCIE slot, the negative pole of light emitting diode D5 and the 26 pin of Onboard NIC controller become high-impedance state.
The grounded emitter of the triode T4 of embodiment 2:NPN type, its collector is connected to the 2nd GPIO port 2 of South Bridge chip PCH, and the 51 pin of its base stage and MINI-PCIE slot, the 26 pin of Onboard NIC controller and the negative pole of light emitting diode D5 link together.The one GPIO port one of South Bridge chip is connected to one end of interrupteur SW.The positive pole of the other end of interrupteur SW and light emitting diode D5 and one end of biasing resistor link together.Another termination power VCC of biasing resistor R.
Interrupteur SW is in normally open.When user presses interrupteur SW, make its closure, a GPIO port one by biasing resistor R by move high level to, South Bridge chip changes the voltage of the 2nd GPIO port 2 into high level simultaneously.Thereby triode T4 conducting, the 51 pin of MINI-PCIE slot, the negative pole of light emitting diode D5 and the 26 pin of Onboard NIC controller are pulled down to low level.Thereby realize and close wireless WIFI network interface card, bluetooth and Onboard NIC simultaneously, and light light emitting diode D5.
After physical isolation completes, cannot recover network with software and connect, can only again press interrupteur SW and unclamp again, apply a high level pulse to a GPIO port one.The voltage of South Bridge chip the 2nd GPIO port 2 becomes low level, makes triode T4 cut-off, and the 51 pin of MINI-PCIE slot, the negative pole of light emitting diode D5 and the 26 pin of Onboard NIC controller become high-impedance state.
Claims (5)
1. a network physical isolation apparatus, comprise South Bridge chip, it is characterized in that, the one GPIO port of described South Bridge chip is connected with one end of switch, the 2nd GPIO port of South Bridge chip is connected to the control utmost point of switching tube, described switching tube first connects utmost point ground connection, switching tube second connects the negative pole that the utmost point is connected to light emitting diode, the positive pole of light emitting diode and the other end of switch are together connected to one end of biasing resistor, another termination power of biasing resistor, the output terminal of whole spacer assembly is positioned at light emitting diode negative pole.
2. network physical isolation apparatus according to claim 1, is characterized in that, described switching tube is NMOS pipe, and switching tube first connects very source electrode, and switching tube second connects very drain electrode, and switch controlled is grid very.
3. network physical isolation apparatus according to claim 1, is characterized in that, described switching tube is NPN type triode, and switching tube first connects very emitter, and switching tube second connects very collector, and switch controlled is base stage very.
4. network physical isolation apparatus according to claim 1, is characterized in that, described switching tube is PMOS pipe, and switching tube first connects very source electrode, and switching tube second connects very drain electrode, and switch controlled is grid very.
5. network physical isolation apparatus according to claim 1, is characterized in that, described switching tube is positive-negative-positive triode, and switching tube first connects very emitter, and switching tube second connects very collector, and switch controlled is base stage very.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134371.4U CN203882315U (en) | 2014-03-24 | 2014-03-24 | Network physical isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134371.4U CN203882315U (en) | 2014-03-24 | 2014-03-24 | Network physical isolation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882315U true CN203882315U (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420134371.4U Expired - Fee Related CN203882315U (en) | 2014-03-24 | 2014-03-24 | Network physical isolation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103902928A (en) * | 2014-03-24 | 2014-07-02 | 同方计算机有限公司 | Network physical isolation device |
-
2014
- 2014-03-24 CN CN201420134371.4U patent/CN203882315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103902928A (en) * | 2014-03-24 | 2014-07-02 | 同方计算机有限公司 | Network physical isolation device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 |