KR20140100372A - The transmitting way of one-sided-safety between net seperation computers - Google Patents
The transmitting way of one-sided-safety between net seperation computers Download PDFInfo
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- KR20140100372A KR20140100372A KR1020130013622A KR20130013622A KR20140100372A KR 20140100372 A KR20140100372 A KR 20140100372A KR 1020130013622 A KR1020130013622 A KR 1020130013622A KR 20130013622 A KR20130013622 A KR 20130013622A KR 20140100372 A KR20140100372 A KR 20140100372A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- 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
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/85—Protecting input, output or interconnection devices interconnection devices, e.g. bus-connected or in-line devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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Abstract
If the driving power is supplied to the internal power supply unit of the computer unidirectional security data transmission unit, the main control unit uploads the program of the fixed program storage unit and controls the packet generator to supply the driving power The computer operating system recognizes the network disconnection computer unidirectional secure data transmission device and transmits the setup packet (SETUP PACKET) to the network from the external network computer to the one-way secure data transmission device internal memory When a transmission token packet (Token Packet) is transmitted through the external network USB output port, the main controller transmits a token packet (Token Packet) to the external network USB input port through the external network packet generator, When it is stored in the memory, it transmits the token packet (Token Packet) To transmit a file to the internal network computer in the internal memory of the computer unidirectional security data transfer device, a token packet (Token Packet) is transmitted to the internal network USB output When the data is transmitted through the port, the main controller transmits the token packet (Token Packet) to the internal network USB input port through the external network packet generator, and then transmits the file stored in the internal memory of the unidirectional secure data transmission device internal network Wherein the network is a one-way secure data transmission device.
Description
In order to protect the internal computer resources from the intrusion of the network, the network is divided into a business network and a private network.
The physical network separation is a method in which one person uses two PCs, or a switch is used to disconnect the network, or a PC equipped with two network cards.
In the case of logical network separation, server-based computing has been discussed in the past, but in recent years, VDI using virtualization technology and OS kernel separation, which installs two operating systems (OS) on one PC, have been mainly used.
According to the NIS, which recommended the separation of the physical network for security reasons, most public institutions have separated physical networks using two PCs.
However, in order to use two PCs, it is necessary to duplicate the network, which causes excessive investment, and there is a problem in that the infrastructure that is constructed can not be recycled if the government departments or government offices need to be transferred. Especially, as the number of PCs increased in the office space, the work environment was deteriorated due to heat generation.
BACKGROUND OF THE
The prior art attempts to use both the internal network and the external network at the same time, and it is a technology focused on operating the computer independently by a physical changeover switch.
As a main feature of the present invention, unlike the prior art in which two internal computers and external network computers operate physically and completely independently, the flow of data is controlled in one direction between two computers. Do not.
USB is an abbreviation of Universal Serial Bus. It is used by seven core companies (Compaq, DEC, IBM, Intel, Microsoft, NEC, NEC) to provide a simple way to integrate computers and phones known as CTI Nortel), which was later extended to the concept of easily integrating multiple peripherals (up to 127) into a host personal computer.
A CPU (Central Processing Unit) (hereinafter abbreviated as a CPU in the following description) is a central processing unit by combining a computing device and a control device.
A mainboard is a printed circuit board (PCB) containing main components for operating a computer. The main board includes a central processing unit (CPU), an input / output port, and the like, and is called a motherboard or a motherboard There is also.
A server is a computer or software that provides a service to another computer on a network. The functions provided by the server are referred to as computers or software on the side of the user. For example, the Web server saves Web page (home page) information and sends the data to the user's computer when requested. The client software for displaying the information sent from the web server is a web browser. In addition to the Internet, a real-time video and VOD (Video On Demand) content shot by a mail server (e-mail), a DNS server (domain name), an FTP server Video servers, and so on. The recently developed servers have built-in encoder / decoder functions for analog / digital interconversion in the server, and a data compression program that improves transmission data and communication speed by communication modem and compression conversion for communication is built in And it mainly uses MPEG compression method in relation to video (moving image, still image).
A microprocessor is a microprocessor that can inject a program into a processor to implement its desired operating characteristics, while a TTL or CMOS IC can only operate as a specified characteristic. And a memory in which data such as a computing device to which a control program is inputted and a data are stored and a control line is connected to the input and output pins to control the input / It is possible.
Network switching computer "is a dual port LAN card that selectively connects an internal network (intranet network) or an external network (Internet network) connected to a main board of a computer through PCI communication or USB communication, A signal switch for connecting to a contact selected from among a first contact for disconnecting the connection, a second contact connected to the internal network (intranet network), and a third contact connected to the external network (Internet network) An interface control unit for transmitting a switching switching signal to the signal switching switch using a control signal, a data conversion unit for converting data between the signal switching switch and the main board into a PCI system or a USB system, A PCI or USB connection terminal for connecting to the main board; "And a network switching computer using a dual port LAN card has been proposed.
The network switching computer shares a hard disk (storage device) with a main board through a dual port LAN card, which is vulnerable to security such as hacking.
At present, in the case of national integrated network or network separation, it is a principle to completely physically separate not only a hard disk but also a virtual hard disk as in the prior art.
Currently, personal computers used by government agencies and corporations are not able to recognize general USB memory on the PC AGENT program.
In addition, commercial mail can not be used in government offices.
However, there is a case in which downloading or updating of information and program data collected through the Internet occurs. In this case, as a method of downloading the data, the data collected through the Internet can be downloaded through the integrated security mail server, I had no choice but to receive data via secure USB.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a method of transmitting data from a computer connected to an external network to a computer connected to an internal network in a business environment separated by an internal network computer and an external network computer (Secure USB, external hard) capable of secure data transfer between network and computer.
In addition, real-time data transmission that is physically separated from the internal network and the external network is enabled.
In particular, the main technical problem is not to upgrade the computer main body to the level of uploading the program without improving the hardware of the existing computer.
Unlike conventional USB memory and external hard disk, it consists of an I / O communication port and an external memory and a connection cable which are simultaneously inserted into the internal network computer and the external network computer, so that the two computers recognize the external memory at the same time, It is possible to perform transmission and real-time transmission after virus check only in one direction.
The present invention recognizes and uses the hardware through a USB recognition device in addition to a general purpose computer that does not further improve the existing computer hardware, so that it does not improve the existing computer and performs a complicated procedure such as CC certification additionally There is an effect that does not need to be done.
In order to transfer data unidirectionally between two separate computers rather than to transmit data in one direction using two main boards, it is possible to transmit data in a network-separated computer unidirectional secure data transmission apparatus of the present invention without improving the hardware of the computer It is novel and progressive with significant differentiations implemented through methods.
Ministry of Public Administration and Security (Security Administration Department) It is possible to transmit data with security from external network to internal network while solving the inconvenience caused by the use of e-mail, secure USB, and relay server.
Also, in case of data transmission and update between industrial control servers, data transmission with enhanced information protection can be performed by applying the security enhanced technology.
1 is a block diagram of a simplified embodiment of the present invention;
Figure 2 is a simplified block diagram of an embodiment of the present invention.
Figure 3 is a block diagram of a simplified embodiment of the present invention
The USB or communication line has data input line and output line always exist at the same time and sends and receives mutual data transmission and reception of Ring Back packet. If the ring back does not occur, the computer recognizes it as an error.
An object of the present invention is to solve the problem that an error occurs due to a failure of a ring back occurring in a communication line which is transmitted only in one direction in a communication between computers but is not transmitted.
When a general microprocessor (microcontroller) is used to implement a communication device to enable data transfer from an external network computer to an internal network computer only in one direction, the firmware source code becomes complicated and the communication protocol specification can be implemented as a source. The source code becomes complicated and difficult to develop, and additional internal program code, host, and device drivers are required.
The present invention has been made to solve the above problems,
In the conventional USB, when the USB is plugged into the USB port of the computer, the process of detecting this device by Windows is called 'initial decision'. Then, the computer determines what device the USB device plays, In this case, the Host and the Device periodically exchange Request and Descriptor with each other, and this process is called enumeration.
After the enumeration is over, the Host will detect the device and register it as a USB device.
When the registration is completed, the USB device actually exchanges data of this purpose to perform its original function.
The USB transmission method is Control, Bulk, Interrupt, and Isochronous. In particular, the control method is used when exchanging information about device configuration. It provides bidirectional communication and uses an 8Byte setup packet (SETUP PACKET).
In particular, among the USB specifications, a token packet (Token Packet) consists of PID (8 bits), ADDR (7 bits), ENDP (4 bits), and CRC5 (5 bits).
The present invention will be described in detail with reference to the following embodiments for the purpose of recognizing and using hardware through a USB recognition device in addition to a general-purpose computer in which an existing computer is not further improved in hardware.
Disconnecting the network via one or more USB ports of the internal network or the external network computer. When the computer power is supplied to the internal power supply of the unidirectional security data transfer device,
The main control unit controls the packet generator after uploading the program of the fixed program storage unit stored in the network separating computer unidirectional secure data transmission device operating program, and transmits a SETUP packet to the computer through one or more computers to which driving power is supplied, Network separation Allows computers to recognize unidirectional secure data transfer devices.
In other words, when the network separation computer unidirectional security data transmission device is connected to the USB port of the internal network computer, the + 5V power supplied from the internal network computer is received from the power supply and used as the driving power, and a SETUP PACKET The internal network computer operating system (OS) causes the network separation computer unidirectional security data transmission device to be recognized as an external hardware device.
Or network separation When the unidirectional secure data transmission device is connected to the USB port of the external network computer, the external network computer is recognized in the same way. When the simultaneous power is supplied from the internal network and the external network computer, Power supply is used as driving power or power source of the first computer is used as the driving power. When + 5V power is supplied to the power supply, network is disconnected to the power supply computer. Computer is used as driving power to recognize the one-way secure data transmission device. It recognizes and transmits a setup packet (SETUP PACKET).
When a token packet (Token Packet) is transmitted through the external network USB output port for file transfer to the internal memory, the main controller transmits the received token packet (Token packet) through the external network packet generator Packet is transmitted to the external network USB input port. When data is received from the external network computer, it is stored in memory and then transmitted token packet (Token Packet) to the external network computer input port through the external network packet generator.
To disconnect the network from the internal network computer, a computer unidirectional security data transfer device To receive the file to the internal network computer, a transmission token packet (Token Packet) is received through the internal network USB output port to the computer unidirectional secure data transmission device The main control unit transmits a token packet to the internal network USB input port through the external network packet generator and then transfers the file stored in the internal memory of the network separating computer unidirectional security data transmission apparatus to the internal network computer Network separation computer unidirectional security data transmission device.
In one embodiment,
Network Detachment via one or more USB ports of the internal network or external network computer When the driving power is supplied to the internal power supply of the computer unidirectional security data transmission apparatus, the main control unit controls the packet generator to transmit the setup packet SETUP PACKET) to the computer so that the computer operating system recognizes the network separated computer unidirectional secure data transmission device.
Network Disconnection from External Network Computer Unidirectional Security Data Transmission Device When a transmission token packet (Token Packet) is transmitted through the external network USB output port (7) for file transfer to the internal memory, And transmits a token packet (Token Packet) to the external network
When data is received from the external network computer, it is stored in the memory, and the transmission complete token packet is transmitted to the external network
In order to receive the file (data) from the internal network computer to the internal memory, a transmission token packet (Token Packet) is transmitted through the internal network computer USB output port (9) The main control unit transmits a token packet (Token Packet) to the internal network computer
Network separation computer unidirectional security data transmission apparatus transferring a file stored in internal memory to an internal network computer and deleting a file stored in the memory when a token packet is input to the internal network packet generator, It is a computer unidirectional secure data transfer device.
In one embodiment,
Network Detachment via one or more USB ports of the internal network or external network computer When the driving power is supplied to the internal power supply of the computer unidirectional security data transmission apparatus, the main control unit controls the packet generator to transmit the setup packet SETUP PACKET) to the computer so that the computer operating system recognizes the network separated computer unidirectional secure data transmission device.
When a transmission token packet (Token Packet) is transmitted through the external network USB output port and the internal network computer receives data from the external network computer to the internal network computer, a token packet is transmitted through the internal network USB output port Network Dispatching Computer Unidirectional Security Data Transmission Device It is received through the internal network packet generator and the main control part transmits the Token Packet to the external network USB input port through the external network packet generator.
When the data transmitted from the external network computer is received, it is stored in the internal network computer memory and then transmitted. When the token packet is received by the internal network packet generator through the USB output port of the internal network computer, the main controller transmits the packet through the external network packet generator And transmits a completion token packet (Token Packet) to the external network USB input port.
Reference is made to Fig. 3 as one embodiment.
When the data stored in the external network local server (Internet network PC in FIG. 3) connected to the external network is transmitted to the external network data server, the external network data server stores the data received from the external network local server after the virus check .
In order to transfer data from the external network data server to the internal network data server, a transmission token packet is transmitted to the internal network data server USB input port through the external network data server USB output port, and the internal network data server transmits the reception token packet When the internal network packet generator receives the Token Packet, it sends the Token Packet to the external network data server USB input port through the external network packet generator. send.
After the data transmission from the external network data server to the internal network data server is completed, the internal network data server transmits the transmission completion message through the USB output port, and the internal network packet generator transmits the token packet (Token Packet) The main control unit transmits the transmission token packet (Token Packet) to the external network data server USB input port through the external network packet generator.
And the data of the internal network data server is downloaded from the internal network local server (PC for business in FIG. 3).
In one embodiment, a switch is additionally provided between an internal network and an external network computer and a power supply unit.
In one embodiment,
Wherein the USB port is an IEEE 1394 port, the USB output port is an IEEE 1394 output communication port, and the USB input port is an IEEE 1394 input communication port.
In one embodiment,
Wherein the USB port is a communication port, the USB output port is an output communication port, and the USB input port is an input communication port.
In one embodiment,
One of the data input lines and the output line is physically disconnected so that normal data input / output is impossible and an error is generated in the computer, so that the computer does not recognize the error in order to artificially transmit the data only in one direction ,
And a packet generating device for transmitting a ring back packet to a control packet input through the USB input / output port through the packet generating device so as not to cause an error in the computer.
In one embodiment,
If an IP address is added to data stored in a local server connected to an external network and transmitted to an external network data server, the external network data server checks the data received from the external network local server and stores the data.
In order to transfer data from the external network data server to the internal network data server, a transmission token packet is transmitted to the internal network data server USB input port through the external network data server USB output port, and the internal network data server transmits the reception token packet When the internal network packet generator receives the Token Packet, it sends the Token Packet to the external network data server USB input port through the external network packet generator. send.
After the data transfer from the external network data server to the internal network data server's IP address is completed, the internal network data server transmits the data through the USB output port. The internal network packet generator transmits a token packet (token packet) (Token Packet), the main control unit transmits the transmission complete token packet (Token Packet) to the external network data server USB input port through the external network packet generator.
And the internal network local server downloads the data of the folder assigned with the IP address of the internal network data server.
In one embodiment,
Internal network computer and external network computer are connected to CCTV monitoring device and operate CCTV monitoring device with security. CCTV monitoring device Network separation Computer unidirectional security data transmission device.
1. Power supply
2. Main control part
3. Fixed program storage
4. Memory
5. Packet generator
6. External network computer External network USB input port
7. External network computer External network USB output port
8. Internal network Computer Internal network USB input port
9. Internal network Computer internal network USB output port
Claims (11)
The main control unit uploads a program of the fixed program storage unit and controls a packet generator to transmit a SETUP packet to a computer to which driving power is supplied so that the computer operating system recognizes the network separated computer unidirectional secure data transmission apparatus;
Network Disconnection from External Network Computer Unidirectional Security Data Transmission Device When a transmission token packet (Token Packet) is transmitted through the external network USB output port (7) for file transfer to the internal memory, Transmits a token packet (Token Packet) to the external network computer external input USB input port 6 through the external network computer;
When a file is received from the external network computer, the packet is stored in the memory and transmitted to the external network USB input port 6 through the external network packet generator through the transmission complete token packet;
Network Disconnection from Internal Network Computer Computer Unidirectional Security Data Transmission Device When a Token Packet is transmitted through internal network USB internal port (9) to receive files from internal network computer in internal memory, It transmits the received token packet (Token Packet) through the internal network packet generator to the internal network computer USB input port (8), and then transfers the file stored in the internal memory of the unidirectional security data transfer device internal network computer. A network-separated computer unidirectional secure data transfer device.
The main control unit controls the packet generator to transmit a SETUP packet to the computer to which the driving power is supplied so that the computer operating system recognizes the network separated computer unidirectional secure data transmission device;
When a token packet (Token Packet) is transmitted through the external network USB output port for file transfer to the internal memory, the main controller transmits the received token packet (Token packet) through the external network packet generator Packet) to the external network USB input port;
When a file is received from the external network computer, it stores it in memory and transmits a transmission complete token packet to the external network computer input port through the external network packet generator;
When a token packet (Token Packet) is transmitted through the internal network USB output port in order to receive a file from the internal network computer into the internal memory, the main controller transmits the internal network packet through the internal network packet generator Transmits a token packet (Token Packet) to the internal network USB input port;
Network separation computer unidirectional security data transmission apparatus transferring a file stored in internal memory to an internal network computer and deleting a file stored in the memory when a token packet is input to the internal network packet generator, Computer unidirectional secure data transfer device.
The main control unit controls the packet generator to transmit a SETUP packet to the computer to which the driving power is supplied so that the computer operating system recognizes the network separated computer unidirectional secure data transmission device;
When a transmission token packet (Token Packet) is transmitted through the external network USB output port and the internal network computer receives data from the external network computer to the internal network computer, a token packet is transmitted through the internal network USB output port And the main control unit receives the token packet (Token Packet) through the external network packet generator to the external network USB input port;
When the data transmitted from the external network computer is received, it is stored in the internal network computer memory and then transmitted. When the token packet is received by the internal network packet generator through the USB output port of the internal network computer, the main controller transmits the packet through the external network packet generator And transmits a completion token packet (Token Packet) to the external network USB input port.
When the data transmitted from the external network computer is received, it is stored in the internal network computer memory and then transmitted. When the token packet is received by the internal network packet generator through the USB output port of the internal network computer, the main controller transmits the packet through the external network packet generator And transmits a completion token packet (Token Packet) to the external network USB input port.
In order to transfer data from the external network data server to the internal network data server, a transmission token packet is transmitted to the internal network data server USB input port through the external network data server USB output port, and the internal network data server transmits the reception token packet When the internal network packet generator receives the Token Packet, it sends the Token Packet to the external network data server USB input port through the external network packet generator. Transmit;
After the data transmission from the external network data server to the internal network data server is completed, transmission is completed through the internal data server USB output port. When the internal network packet generator receives the token packet (Token Packet) by transmitting the token packet The main control unit transmits a transmission token packet (Token Packet) to the external network data server USB input port through the external network packet generator;
And the data of the internal network data server is downloaded from the internal network local server.
In order to transfer data from the external network data server to the internal network data server, a transmission token packet is transmitted to the internal network data server USB input port through the external network data server USB output port, and the internal network data server transmits the reception token packet When the internal network packet generator receives the Token Packet, it sends the Token Packet to the external network data server USB input port through the external network packet generator. Transmit;
After the data transfer from the external network data server to the internal network data server's IP address is completed, the internal network data server transmits the data through the USB output port. The internal network packet generator transmits a token packet (token packet) (Token Packet), the main control unit transmits a transmission token packet (Token Packet) to the external network data server USB input port through the external network packet generator;
Wherein the internal network local server downloads the data of the folder assigned with the IP address of the internal network data server.
To prevent errors in the computer from being recognized by the computer in order to artificially transmit the data physically in one direction only when normal data input /
A packet generating device for transmitting a ring back packet to a control packet input through a USB input port and a USB output port through a packet generating device to prevent a computer from generating an error. Device.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020130013622A KR20140100372A (en) | 2013-02-06 | 2013-02-06 | The transmitting way of one-sided-safety between net seperation computers |
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| KR1020130013622A KR20140100372A (en) | 2013-02-06 | 2013-02-06 | The transmitting way of one-sided-safety between net seperation computers |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020140068396A Division KR20140100452A (en) | 2014-06-05 | 2014-06-05 | The CCTV transmitting way of one-sided-safety between net seperation computers |
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| KR20140100372A true KR20140100372A (en) | 2014-08-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160028345A (en) * | 2015-06-08 | 2016-03-11 | 이승철 | The smart controlling system and the controller |
| CN109450939A (en) * | 2018-12-24 | 2019-03-08 | 厦门德尔微科技有限公司 | A kind of all-in-one machine of inside and outside network physical isolation |
| CN111125801A (en) * | 2019-12-27 | 2020-05-08 | 北京安天网络安全技术有限公司 | USB-based automatic switching one-way remote file transmission method and device |
| WO2022035157A1 (en) * | 2020-08-11 | 2022-02-17 | 이청종 | Mobile computing device comprising compartmentalized computing module |
-
2013
- 2013-02-06 KR KR1020130013622A patent/KR20140100372A/en not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160028345A (en) * | 2015-06-08 | 2016-03-11 | 이승철 | The smart controlling system and the controller |
| CN109450939A (en) * | 2018-12-24 | 2019-03-08 | 厦门德尔微科技有限公司 | A kind of all-in-one machine of inside and outside network physical isolation |
| CN111125801A (en) * | 2019-12-27 | 2020-05-08 | 北京安天网络安全技术有限公司 | USB-based automatic switching one-way remote file transmission method and device |
| WO2022035157A1 (en) * | 2020-08-11 | 2022-02-17 | 이청종 | Mobile computing device comprising compartmentalized computing module |
| KR20220020174A (en) * | 2020-08-11 | 2022-02-18 | 이청종 | Mobile Computing Device comprising Compartment Type Computing Module |
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