CN113055354A - Method and device for safely operating remote host - Google Patents
Method and device for safely operating remote host Download PDFInfo
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- CN113055354A CN113055354A CN201911384989.XA CN201911384989A CN113055354A CN 113055354 A CN113055354 A CN 113055354A CN 201911384989 A CN201911384989 A CN 201911384989A CN 113055354 A CN113055354 A CN 113055354A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000012795 verification Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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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
- H04L63/0272—Virtual private networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
- H04L63/0846—Network architectures or network communication protocols for network security for authentication of entities using passwords using time-dependent-passwords, e.g. periodically changing passwords
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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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0861—Network architectures or network communication protocols for network security for authentication of entities using biometrical features, e.g. fingerprint, retina-scan
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0863—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving passwords or one-time passwords
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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
The invention discloses a method and a device for safely operating a remote host, which are characterized in that a picture of a controlled host is captured by a camera connected with the Internet, the picture is displayed on a display of the controlled host, an operation signal for operating on a live picture displayed on a display of a first host is captured, and the operation signal is transmitted to the camera, so that the camera sends the operation signal to the controlled host, and the remote control of the controlled host is realized. The invention can prevent the risk of directly operating the controlled host to obtain the data of the controlled host, utilizes the transparent channel of the camera to transmit the keyboard signal across the Internet, and uses the tail line of the camera to be connected with the PS2 female port of the controlled host, and ensures that the controlled host only receives the keyboard signal and cannot transmit the keyboard signal outwards because of the unidirectional data transmission of PS 2. Remote operation can be carried out on the premise of safety guarantee, and the dilemma that dual-network direct connection is not allowed to carry out remote operation due to safety reasons is solved.
Description
Technical Field
The invention belongs to the technical field of remote cooperation, and particularly relates to a method and a device for safely operating a remote host.
Background
With the development of internet technology, it has become an indispensable means to use networks for office work and communication. However, data security is also becoming an increasingly important issue. For data security, many units and individuals often limit their own data to intranet transmission (e.g., private network or private network) to avoid illegal access. For example, data in an enterprise, a website in a state institution, etc., a dedicated intranet is provided to protect confidential data, and an extranet cannot normally access data in the intranet.
Due to the data security concerns, data transmission under the internal network to the external or public network is often not allowed. However, when the devices in the intranet require remote maintenance by external personnel, if the devices are directly remotely controlled by remote maintenance software, there is a risk of internal data leakage.
To avoid internal data leakage, maintenance personnel can only reach the field for maintenance support, which is time-consuming and laborious.
Therefore, chinese utility model patent with publication number CN207232963U discloses a remote computer control system with network isolation function, including the control computer under the extranet environment and the controlled computer under the special intranet environment, the control computer is pegged graft and is had video capture card, video capture card passes through the data line and is connected by the video interface of controlled computer, the control computer has simulation keyboard mouse module and power control module through serial interface connection, the output of simulation keyboard mouse module and the keyboard mouse interface connection of controlled computer, the output of power control module is connected with the input electricity of the power key of controlled computer and reset key.
The video acquisition card is connected with the controlled computer, and the analog keyboard and mouse module and the power supply control module are connected with the controlled computer, so that the maintenance purpose is achieved. However, this method adopts a direct connection method, and can only control and operate the controlled computer at the near end, and cannot perform maintenance remotely.
Disclosure of Invention
The present invention provides a method and an apparatus for safely operating a remote host, so as to solve the problem of the prior art that the equipment cannot be remotely maintained.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for safely operating a remote host, which is used for remotely controlling a second host positioned in a private network through a public network by a first host, and arranging a camera at the near end of the second host, wherein the camera acquires a live picture of a display of the second host, comprises the following steps:
the first host receives a live picture of a display of the second host collected by the camera and displays the live picture on the display of the first host;
the first host computer operates on a live picture displayed by the local display, captures an operation signal and transmits the operation signal to the camera, so that the camera sends the operation signal to the second host computer, and remote control of the second host computer is realized.
Further, the method for safely operating the remote host further includes:
the first host collects dynamic face information of an operator, the collected dynamic face information is sent to the camera, the camera is compared with the reserved face information of the operator, a dynamic key is generated after the comparison is passed, and the first host can receive live pictures of a display of the second host collected by the camera after the dynamic key is obtained.
Further, the method for safely operating the remote host further includes:
the second host display live view captured by the camera is transmitted in an encrypted manner.
Further, the operation signal is a keyboard and mouse operation signal, the operation signal is transmitted to the camera, specifically, a serial port signal is transmitted to the camera through a transparent channel.
Further, the camera sends the operation signal to the second host, and the operation signal is sent through a serial port tail line-to-PS 2 interface between the camera and the second host.
The application also provides a device of safe operation remote host for realize that first host computer passes through public network remote control and is located the second host computer in the private network, dispose the camera at second host computer near-end, the live picture of second host computer display is gathered to the camera, the device of safe operation remote host includes:
the live receiving module is used for receiving the live picture of the second host display collected by the camera and displaying the live picture on the first host display;
and the operation signal capturing module is used for capturing an operation signal which is operated on a live picture displayed by the display of the first host computer, and transmitting the operation signal to the camera, so that the camera can send the operation signal to the second host computer, and the remote control of the second host computer is realized.
Further, the apparatus for safely operating a remote host further includes:
the verification module is used for acquiring dynamic face information of an operator, sending the acquired dynamic face information to the camera, comparing the camera with the reserved face information of the operator, generating a dynamic key after the comparison is passed, and receiving a live picture of a display of the second host acquired by the camera only after the first host acquires the dynamic key.
Further, the second host display live picture captured by the camera is transmitted in an encrypted manner.
Further, the operation signal is a keyboard and mouse operation signal, the operation signal capturing module transmits the operation signal to the camera, and specifically, the operation signal is transmitted to the camera through a transparent channel by adopting a serial port signal.
Further, the camera sends the operation signal to the second host, and the operation signal is sent through a serial port tail line-to-PS 2 interface between the camera and the second host.
According to the method and the device for safely operating the remote host, the picture of the controlled host is captured through the camera communicated with the Internet, and the operation is performed according to the picture, so that the risk that the controlled host is directly operated to obtain the data of the controlled host can be prevented. According to the method and the device, network direct connection is not needed, remote operation is carried out on the premise of safety guarantee, and the dilemma that the dual-network direct connection is not allowed to carry out the remote operation due to safety reasons is solved.
Drawings
Fig. 1 is a schematic diagram of a network structure according to an embodiment of the present application;
fig. 2 is a flowchart of a method for securely operating a remote host according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for safely operating the remote host can be applied to the application environment shown in fig. 1. The first host computer is used as a control host computer, the second host computer is used as a controlled host computer, the second host computer is positioned in a private network, and a network camera IPC is arranged beside the second host computer. The first host is accessed to the public network, the IPC is accessed to the public network, and the first host and the IPC establish safe connection through the public network to carry out encryption transmission, thereby ensuring the safety of data transmission. The second host is connected with the IPC through a serial port tail line-to-PS 2 interface.
Wherein, the serial port tail line changes PS2 interface is like the RS232 serial port signal and the PS2 keyboard mouse signal conversion line that the chinese utility model patent of CN2702370Y discloses, and RS232 serial port interface and the serial port connection of IPC, the keyboard of PS2 interface and second host computer or mouse input interface connection.
In addition, the development of the prior art shows that a mouse and a keyboard with a USB interface or a wireless interface are available, the application does not exclude the use of the wireless interface or the USB interface to realize the connection between the IPC and the second host, and the application does not limit the connection mode between the second host and the IPC.
In an embodiment of the present application, as shown in fig. 2, a method for safely operating a remote host is used to implement a first host remotely controlling a second host located in a private network through a public network, where a camera is deployed at a near end of the second host, and the camera acquires a live view of a display of the second host, and the method for safely operating the remote host includes:
the first host receives a live picture of a display of the second host collected by the camera and displays the live picture on the display of the first host;
the first host computer operates on a live picture displayed by the local display, captures an operation signal and transmits the operation signal to the camera, so that the camera sends the operation signal to the second host computer, and remote control of the second host computer is realized.
Specifically, the application utilizes IPC connected with the Internet to encrypt and transmit a live picture of a display of a second host to a display of a first host, and the live picture can be displayed in an interface of a client installed on the first host. The camera is arranged at the near end of the second host, and can acquire a live picture of the display of the second host and transmit the live picture to the first host.
The first host accesses to the public network, which may be on the public network or in the private network. Similarly, the camera IPC is also connected to a public network, which may be on the public network or in a private network. The first host and the IPC are connected through a public network, for example, the first host and the camera are connected through a VPN, or a universal network passport, or a management server located in a cloud, and the connection mode between the first host and the camera is not limited in the present application. Establishing a connection between the first host and the camera to receive a live view of the camera is a well-established technique in the art and is not described herein.
After the first host acquires the live picture of the IPC, the live picture is displayed on a display of the first host, for convenience, client software is usually installed on the first host to acquire the live picture of the camera and capture an operation signal input by the first host in a live display window, for example, a PS2 signal of a keyboard or a mouse, the captured operation signal is encapsulated into an IP packet by the client through a transparent channel technology and transmitted to the IPC, and then the IP packet is restored into an original operation signal by the IPC and output to the second host from a serial port tail, so that the operation of the second host is realized.
In one embodiment, the method of securely operating a remote host further comprises:
the first host collects dynamic face information of an operator, the collected dynamic face information is sent to the camera, the camera is compared with the reserved face information of the operator, a dynamic key is generated after the comparison is passed, and the first host can receive live pictures of a display of the second host collected by the camera after the dynamic key is obtained.
The first host side maintainer needs to provide an operator photo for applying for reservation, and can only use equipment under the same local area network of the IPC to log in a background to import a photo of a researcher; before entering an operation interface on the first host, the first host camera is required to obtain a dynamic face, the face picture is returned and then is identified by IPC comparison, and the mode of dynamic face identification comparison avoids the first host from being controlled by others maliciously and remotely; after the identification of the key is passed, a dynamic key is generated, and only the IPC can log in a background to obtain the key by the same local area network equipment and a manager informs an operator of the reservation; the operator can successfully see the live picture and have the operation authority after inputting the dynamic key into the client software on the first host.
In one embodiment, the method of securely operating a remote host further comprises:
the second host display live view captured by the camera is transmitted in an encrypted manner.
The live code stream is encrypted by a specific algorithm in the transmission process, and the client software decodes the code stream and presents a picture after the authentication is passed, so that the code stream is prevented from being hijacked and snooped in the transmission process. After the remote control operation is started, the live pictures of the IPC are always stored in the memory card of the IPC, so that the later evidence obtaining operation content is facilitated.
In one embodiment, the operation signal is a keyboard and mouse operation signal, and the operation signal is transmitted to the camera, specifically, a serial port signal is transmitted to the camera through a transparent channel.
It is easy to understand that the serial port is a communication interface widely used, and it is a mature technical solution to convert the serial port into ethernet for remote data transmission. The prior art can easily realize the bidirectional transparent transmission of the network data packet and the serial port data packet. According to the application, the IP network is used for transparently transmitting serial port data, the serial port can pass through the IP network to directly control or interact data through a transparent channel technology, a captured keyboard and mouse operation PS2 signal is directly transmitted to the IPC through the transparent channel, then the IPC is connected into the second host through a serial port tail line-PS 2 interface, the keyboard and mouse control PS2 signal is sent to the second host, and the effect of remotely operating the second host under the private network is achieved.
It should be noted that what kind of mode is used for transmitting the captured operation signal to the IPC is determined according to the connection mode of the IPC and the second host, and if the IPC is wirelessly connected with the second host, the first host can also realize control by acquiring the keyboard and mouse operation signal, converting the operation signal into an IP data packet, transmitting the IP data packet to the IPC, transmitting the IP data packet to the second host through a wireless signal, and converting the IP data packet into a keyboard and mouse operation PS2 signal by the second host.
According to the technical scheme, the two networks with different security levels are not required to be directly communicated, the display interface of the host is observed through IPC live, the host is connected with the host through the PS2 interface for operation, only keyboard signals are guaranteed to be received by the controlled host due to PS2 unidirectional transmission data, the risk of direct data transmission does not exist, the data security of the host under the network can be guaranteed, and convenience is brought to a remote operator. Meanwhile, the IPC transmits the live code stream of the second host for safe encryption, and live content cannot be played and viewed even if the IPC is hijacked by people under the Internet; before remote operation is initiated, dynamic face verification and closer dynamic key verification need to be carried out, and malicious remote control of a control host and malicious operation by personnel on the Internet are avoided.
In an embodiment, the present application further provides a device for safely operating a remote host, which is used to enable a first host to remotely control a second host located in a private network through a public network. In this embodiment, a camera is deployed at a near end of the second host, the camera captures a live view of a display of the second host, and the apparatus for safely operating the remote host includes:
the live receiving module is used for receiving the live picture of the second host display collected by the camera and displaying the live picture on the first host display;
and the operation signal capturing module is used for capturing an operation signal which is operated on a live picture displayed by the display of the first host computer, and transmitting the operation signal to the camera, so that the camera can send the operation signal to the second host computer, and the remote control of the second host computer is realized.
For specific limitations of a device for safely operating a remote host, reference may be made to the above limitations of a method for safely operating a remote host, which are not described herein again. The various modules in an apparatus for securely operating a remote host described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment of the present device, the device for securely operating a remote host further comprises:
the verification module is used for acquiring dynamic face information of an operator, sending the acquired dynamic face information to the camera, comparing the camera with the reserved face information of the operator, generating a dynamic key after the comparison is passed, and receiving a live picture of a display of the second host acquired by the camera only after the first host acquires the dynamic key.
In another embodiment of the apparatus, the second host display live view captured by the camera is transmitted in an encrypted manner.
In another embodiment of the device, the operation signal is a keyboard and mouse operation signal, and the operation signal capturing module transmits the operation signal to the camera, specifically, a serial port signal is transmitted to the camera through a transparent channel.
And the camera sends the operation signal to the second host, and sends the operation signal through a serial port tail line-to-PS 2 interface between the camera and the second host.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for safely operating a remote host, which is used for remotely controlling a second host positioned in a private network through a public network by a first host, is characterized in that a camera is deployed at the near end of the second host, the camera acquires a live picture of a display of the second host, and the method for safely operating the remote host comprises the following steps:
the first host receives a live picture of a display of the second host collected by the camera and displays the live picture on the display of the first host;
the first host computer operates on a live picture displayed by the local display, captures an operation signal and transmits the operation signal to the camera, so that the camera sends the operation signal to the second host computer, and remote control of the second host computer is realized.
2. The method of securely operating a remote host according to claim 1, further comprising:
the first host collects dynamic face information of an operator, the collected dynamic face information is sent to the camera, the camera is compared with the reserved face information of the operator, a dynamic key is generated after the comparison is passed, and the first host can receive live pictures of a display of the second host collected by the camera after the dynamic key is obtained.
3. The method of securely operating a remote host according to claim 1, further comprising:
the second host display live view captured by the camera is transmitted in an encrypted manner.
4. The method according to claim 1, wherein the operation signal is a keyboard and mouse operation signal, and the operation signal is transmitted to the camera, specifically, a serial port signal is transmitted to the camera through a transparent channel.
5. The method of claim 4, wherein the camera sends the operation signal to the second host via a serial-to-tail PS2 interface between the camera and the second host.
6. An apparatus for safely operating a remote host, for remotely controlling a second host located in a private network through a public network by a first host, wherein a camera is deployed at a near end of the second host, the camera capturing a live view of a display of the second host, the apparatus for safely operating the remote host comprising:
the live receiving module is used for receiving the live picture of the second host display collected by the camera and displaying the live picture on the first host display;
and the operation signal capturing module is used for capturing an operation signal which is operated on a live picture displayed by the display of the first host computer, and transmitting the operation signal to the camera, so that the camera can send the operation signal to the second host computer, and the remote control of the second host computer is realized.
7. The apparatus for securely operating a remote host according to claim 6, further comprising:
the verification module is used for acquiring dynamic face information of an operator, sending the acquired dynamic face information to the camera, comparing the camera with the reserved face information of the operator, generating a dynamic key after the comparison is passed, and receiving a live picture of a display of the second host acquired by the camera only after the first host acquires the dynamic key.
8. An apparatus for securely operating a remote host according to claim 6, wherein the camera captures live views of the second host display for transmission in an encrypted manner.
9. The device of claim 6, wherein the operation signal is a keyboard and mouse operation signal, and the operation signal capturing module transmits the operation signal to the camera, specifically, a serial port signal is transmitted to the camera through a transparent channel.
10. The apparatus of claim 9, wherein the camera sends the operation signal to the second host via a serial-to-usb 2 interface between the camera and the second host.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911384989.XA CN113055354A (en) | 2019-12-28 | 2019-12-28 | Method and device for safely operating remote host |
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| CN201911384989.XA CN113055354A (en) | 2019-12-28 | 2019-12-28 | Method and device for safely operating remote host |
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| CN202495042U (en) * | 2012-03-12 | 2012-10-17 | 江阴广明信息技术有限公司 | Remote control system for face recognition computer |
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| US20160249106A1 (en) * | 2012-09-14 | 2016-08-25 | Appurify, Inc. | Remote Control of a Mobile Device |
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Application publication date: 20210629 |