CN111475867A - General safety cooperation system - Google Patents
General safety cooperation system Download PDFInfo
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- CN111475867A CN111475867A CN202010259442.3A CN202010259442A CN111475867A CN 111475867 A CN111475867 A CN 111475867A CN 202010259442 A CN202010259442 A CN 202010259442A CN 111475867 A CN111475867 A CN 111475867A
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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
- G06F21/71—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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention relates to the field of computer network tool equipment and information security, and discloses a general security cooperation system, which is used for solving the problem that remote cooperation and security between an internal network and an external network are contradictory at present. The invention comprises an operation initiating end host, an operated end host, a one-way keyboard and mouse communication electronic circuit, a one-way video communication electronic circuit, an HID driving program and an analog KVM application program; the operating initiating host is used for receiving the operation starting host and the HID driving program; and during safe cooperation, the operation initiating terminal host sends the keyboard and mouse actions to the operated terminal host in a single direction, and the operated terminal host sends the screen image data to the operation initiating terminal in a single direction. The method is suitable for safe cooperation of the internal and external network equipment.
Description
Technical Field
The invention relates to the field of computer network tool equipment and information security, in particular to a general security collaboration system.
Background
Currently, most entities (including governments, utilities, enterprises, and social organizations) have their own internal networks on which a large number of network devices, computers, various specialized computer software, and business systems are running. The computer system running on the internal network processes information needing to be kept secret or is related to core business of an enterprise and is not subject to information leakage, network attack or virus infection.
The stable operation of computer systems, computers, various specialized computer software and business systems on these internal networks is related to the daily operation of the units. In order to ensure the stable operation of these systems, all relevant manufacturers and information technicians of units are required to maintain the systems in time and handle faults in time. These maintenance works, if performed on site, generate huge costs and, therefore, are inevitable, and these units and manufacturers have a strong demand for reducing costs and shortening response costs through remote maintenance.
On the other hand, in order to prevent information leakage, prevent network attacks, and reduce virus infection as much as possible, enterprises, public institutions and governments can isolate the internal network from the internet, strictly control the access of data and files of the internal network, and forbid the internal network from accessing the internet.
Isolation from the internet presents serious problems with the maintenance and remote collaboration of computer systems on the intranet. Therefore, no matter how the organization worries about the risk of accessing the internet, the intranet and the internet must not be connected through various schemes in the end. Thus, units are often in a dilemma: if the complete internal and external network isolation is adhered to, the pressure of a business department on long-time faults and frequent unavailability of a system is surely borne, and various remote cooperative applications cannot be fully utilized to improve the working efficiency and share high-quality resources; if the internet is accessed, unpredictable network security risks are brought to the internal service network.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a general safe cooperation system is provided to solve the problem that the remote cooperation and the safety between an internal network and an external network are contradictory at present.
In order to solve the problems, the invention adopts the technical scheme that: a general safety cooperation system comprises an operation initiating end host, an operated end host, a one-way keyboard and mouse communication electronic circuit, a one-way video communication electronic circuit, an HID driving program and an analog KVM application program; the operating initiating host is used for receiving the operation starting host and the HID driving program;
the analog KVM application is used for acquiring images from the one-way video communication electronic circuit and displaying the images in real time; and the electronic circuit is used for capturing keyboard and mouse messages in all application program windows in the host computer at the initiating end of the operation, converting the keyboard and mouse messages into data with a certain format and outputting the data to the one-way keyboard and mouse communication electronic circuit;
the unidirectional keyboard and mouse communication electronic circuit is used for converting keyboard and mouse messages into control signals conforming to an HID keyboard and mouse protocol and transmitting the control signals to an operating system in an operated end host through an HID driver;
after receiving the control signal from the HID driver, the operating system of the operated end host forwards the control signal to the current application program of the operated end host; after the current application program of the host computer of the operated end responds to the control signal, the screen display picture of the operated end is transmitted back to the operation initiating end in real time through the one-way video communication electronic circuit.
Further, the implementation principle of the one-way keyboard and mouse communication electronic circuit can be as follows:
the method comprises the steps that a single chip microcomputer with a USB interface is used as USB output equipment at an operation initiating end, keyboard and mouse output data from an analog KVM application program are received, certain conversion processing is carried out, keyboard and mouse hardware scanning codes are sent to the USB single chip microcomputer at an operated end according to a certain baud rate, and the keyboard and mouse hardware scanning codes are forwarded to a host machine at the operated end according to a standard HID protocol after the USB single chip microcomputer at the operated end receives the data.
Further, the implementation principle of the unidirectional video communication electronic circuit can be as follows:
the video one-way video communication electronic circuit mainly comprises an HDMI video decoding chip, a parallel data bit width processing unit and a USB3.0 interface chip, wherein video output of the host computer at the operated end is output to the video decoding chip through an HDMI port and converted into parallel data, then the parallel data is converted into data which can be processed by the USB interface chip through the data bit width processing unit, and then the data is converted into general UVC video data through the USB interface chip to be used as video input of the host computer at the operation initiating end.
Furthermore, in order to facilitate the remote control of the security cooperation system of the present invention with the internal and external network terminals, both the operation initiating side host and the operated side host can be installed with remote desktop tools.
Furthermore, in order to realize remote safe cooperation, the general safe cooperation system can also comprise an intranet terminal and an extranet terminal, wherein the extranet terminal remotely controls the initiating terminal host through a remote desktop tool, and the operated terminal host remotely controls the intranet terminal through the remote desktop tool.
The invention has the following beneficial effects: the operation initiating end host computer of the invention sends the keyboard and mouse actions to the operated end host computer in a single direction, and the operated end host computer sends the screen image data to the operation initiating end in a single direction, and the host computers at the two ends have no possibility of establishing network connection and no possibility of establishing file sharing. Therefore, the possibility of network attack, data transmission, file copying and virus infection through the system is fundamentally eliminated. The operation initiating end is visual to all the operations of the operated end and can be stored in a video recording mode, so that a strict security audit target can be achieved.
Through the safety cooperation system, technicians of an external network can safely and remotely maintain computer software and hardware systems of an internal network of a unit, industrial experts can remotely guide business personnel working on the internal network of the unit, the workers can also remotely operate the business system on an internal network of the unit, network attack, virus infection and information leakage risks are not brought, and the safety cooperation system can be widely applied to maintenance and cooperation of internal networks of enterprises, public institutions and government units.
Drawings
FIG. 1 is a schematic diagram of an embodiment implementing remote collaboration.
FIG. 2 is a block diagram of a general secure collaborative KVM system according to an embodiment.
FIG. 3 is a schematic diagram of a possible keyboard and mouse signal channel implementation provided by the embodiment.
Fig. 4 is a schematic diagram of a possible implementation of the on-screen display signal channel provided by the embodiment.
Detailed Description
The invention provides a computer system which can meet remote cooperative maintenance and ensure that the network security risk with the greatest threat of information leakage, network attack or virus infection is not brought, and the computer system can be called as a general security cooperative KVM system. The invention comprises an operation initiating host and an operated host, wherein a KVM application program is operated on the operation initiating host, a KVM system is simulated, a screen image transmitted by the operated host through a unidirectional video line is displayed, mouse and keyboard operations on an application program graphical interface are intercepted, and mouse and keyboard operation codes are written into a unidirectional mouse and keyboard communication line. Installing an HID device driver on the host computer of the operated end, realizing a keyboard and mouse device on a hardware layer, and changing the mouse and keyboard operation from the operation initiating end forwarded from the one-way keyboard and mouse communication line into a keyboard and mouse input of the operating system of the host computer of the operated end. Under the cooperation of the KVM analog application program, the one-way keyboard and mouse communication line, the one-way video communication line and the HID device driver program, the desktop operation of the host computer (mainly an extranet host) at the operation initiating end on the host computer (mainly an intranet host) at the operation receiving end is realized.
Because the general collaborative KVM system only transmits the keyboard and mouse operation, copies the line equipment for displaying output, and connects two internal and external network hosts which are physically separated by the network, the desktop operation of the operation initiating host (mainly the external network host) to the operated host is realized. Except the set of electronic circuits for unidirectional forwarding keyboard and mouse operation and display output, the two hosts are not connected with any other circuits including a network, so that the absolute isolation of the network and a file system is ensured. Under the support of the general safe cooperation KVM system, any remote desktop tool in the IT industry can be utilized to realize the cooperation office between the internal and external network hosts without the risks of network attack, virus infection and information leakage. The system can be widely applied to computer system maintenance of government departments, enterprises and public institutions, can also be used for remote teaching and remote consultation, and eliminates the network security risk brought by the remote cooperation at present.
The invention is further illustrated by the following examples and figures.
As shown in fig. 1 and 2, the embodiment provides a universal secure collaborative KVM system, which specifically includes an operation initiating host, an operated host, a one-way keyboard-mouse communication electronic circuit, a one-way video communication electronic circuit, an HID driver, and an analog KVM application; the operating initiating host and the operated host are both provided with remote desktop tools for facilitating the remote control of the security cooperation system of the embodiment and the internal and external network terminals.
In an embodiment, the analog KVM application is configured to obtain an image from the one-way video communication electronic circuit and display the image in real time; and the electronic circuit is used for capturing keyboard and mouse messages in all application program windows in the operation initiating end host, converting the keyboard and mouse messages into data with a certain format and outputting the data to the one-way keyboard and mouse communication electronic circuit.
The unidirectional keyboard and mouse communication electronic circuit is used for converting keyboard and mouse messages into control signals conforming to the protocol of the HID keyboard and mouse, and transmitting the control signals to an operating system in the host computer of the operated end through an HID driver. As shown in fig. 3, the implementation principle of the electronic circuit for one-way keyboard-mouse communication provided by the embodiment is as follows:
the host computer at the operation initiating end uses a singlechip with a USB interface as a USB output device, receives keyboard and mouse output data from an analog KVM application program, performs certain conversion processing, and sends keyboard and mouse hardware scanning codes to the USB singlechip at the operated end according to a certain baud rate. After the USB single chip microcomputer of the operated end receives the data, the keyboard and mouse hardware scanning codes are forwarded to the host of the operated end according to the standard HID protocol, and a set of keyboard and mouse functions are actually achieved.
After receiving the control signal from the HID driver, the operating system of the operated end host forwards the control signal to the current application program of the operated end host; after the current application program of the host computer of the operated end responds to the control signal, the screen display picture of the operated end is transmitted back to the operation initiating end through the one-way video communication electronic circuit in real time, and finally the screen display picture is displayed to the operation initiating end to simulate the KVM application program.
As shown in fig. 4, the implementation principle of the unidirectional video communication electronic circuit provided by the embodiment is as follows: the video one-way video communication electronic circuit mainly comprises an HDMI video decoding chip, a parallel data bit width processing unit and a USB3.0 interface chip. The video output of the host computer at the operated end is output to a video decoding chip through an HDMI interface, converted into parallel data, then converted into data which can be processed by a USB interface chip through a data bit width processing unit, and converted into general UVC video data through the USB interface chip to be used as the video input of the host computer at the operation initiating end.
The operation initiating host and the operated host can install any general-purpose operating system with a graphic interface, including but not limited to Windows and L inux.
With reference to fig. 1 and 2, the embodiment may use the system to achieve secure collaboration between intranet and extranet hosts according to the following procedures:
1. accessing an operation initiating end host of the general safe cooperation KVM dual-computer system to the Internet, operating a remote desktop tool at the background or the foreground, and accessing an operated end host to the intranet;
2. a remote support person (or a system maintenance person, a service support person, a teacher or a staff) uses an external network terminal (such as a PC, a tablet, a mobile phone or a notebook computer) which can access the internet to run a remote desktop working tool, operate the general safe cooperation KVM dual-computer system and start the analog KVM application;
3. operating the operated end host by simulating a KVM application program;
4. the host computer in the unit intranet is operated by using the remote tool installed on the host computer at the operating end. Thus, the remote operator can operate the host computer just like sitting in front of the target intranet host computer.
In the embodiment, the operation initiating terminal host sends the keyboard and mouse actions to the operated terminal host in a single direction, and the operated terminal host sends the screen image data to the operation initiating terminal in a single direction, so that the hosts at two ends have no possibility of establishing network connection and no possibility of establishing file sharing. Therefore, the possibility of network attack, data transmission, file copying and virus infection through the system is fundamentally eliminated. The operation initiating end is visual to all the operations of the operated end and can be stored in a video recording mode, so that a strict security audit target can be achieved.
Claims (5)
1. A universal secure collaboration system, characterized by: the system comprises an operation initiating end host, an operated end host, a one-way keyboard and mouse communication electronic circuit, a one-way video communication electronic circuit, an HID driving program and an analog KVM application program; the operating initiating host is used for receiving the operation starting host and the HID driving program;
the analog KVM application is used for acquiring images from the one-way video communication electronic circuit and displaying the images in real time; and the electronic circuit is used for capturing keyboard and mouse messages in all application program windows in the host computer at the initiating end of the operation, converting the keyboard and mouse messages into data with a certain format and outputting the data to the one-way keyboard and mouse communication electronic circuit;
the unidirectional keyboard and mouse communication electronic circuit is used for converting keyboard and mouse messages into control signals conforming to an HID keyboard and mouse protocol and transmitting the control signals to an operating system in an operated end host through an HID driver;
after receiving the control signal from the HID driver, the operating system of the operated end host forwards the control signal to the current application program of the operated end host; after the current application program of the host computer of the operated end responds to the control signal, the screen display picture of the operated end is transmitted back to the operation initiating end in real time through the one-way video communication electronic circuit.
2. A universal secure collaboration system as claimed in claim 1, wherein: the one-way keyboard and mouse communication electronic circuit is realized according to the following principle:
the method comprises the steps that a single chip microcomputer with a USB interface is used as USB output equipment at an operation initiating end, keyboard and mouse output data from an analog KVM application program are received, certain conversion processing is carried out, keyboard and mouse hardware scanning codes are sent to the USB single chip microcomputer at an operated end according to a certain baud rate, and the keyboard and mouse hardware scanning codes are forwarded to a host machine at the operated end according to a standard HID protocol after the USB single chip microcomputer at the operated end receives the data.
3. A universal secure collaboration system as claimed in claim 1, wherein: the video one-way video communication electronic circuit mainly comprises an HDMI video decoding chip, a parallel data bit width processing unit and a USB3.0 interface chip, wherein video output of the host computer at the operated end is output to the video decoding chip through an HDMI port and converted into parallel data, then the parallel data is converted into data which can be processed by the USB interface chip through the data bit width processing unit, and then the data is converted into general UVC video data through the USB interface chip to be used as video input of the host computer at the operation initiating end.
4. A universal secure collaboration system as claimed in claim 1, wherein: the operation initiating end host and the operated end host are both provided with remote desktop tools for remote control.
5. A universal secure collaboration system as claimed in claim 4, wherein: still include intranet terminal and extranet terminal, the extranet terminal is through remote desktop instrument remote control operation initiating terminal host computer, is passed through remote desktop instrument remote control intranet terminal by the operating end host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010259442.3A CN111475867A (en) | 2020-04-03 | 2020-04-03 | General safety cooperation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010259442.3A CN111475867A (en) | 2020-04-03 | 2020-04-03 | General safety cooperation system |
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| CN111475867A true CN111475867A (en) | 2020-07-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261044A (en) * | 2020-10-22 | 2021-01-22 | 江苏税软软件科技有限公司 | Remote assistance system and method suitable for internal and external network isolation |
| CN112491786A (en) * | 2020-10-16 | 2021-03-12 | 中国铁路信息科技集团有限公司 | Safe operation and maintenance method and system based on one-way transmission |
| CN114157466A (en) * | 2021-11-25 | 2022-03-08 | 成都普沛科技有限公司 | System and method for realizing safe cross-network access under network partition |
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