CN101997926A - Method for remotely maintaining multiple terminals based on 3G network - Google Patents
Method for remotely maintaining multiple terminals based on 3G network Download PDFInfo
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- CN101997926A CN101997926A CN2010105567180A CN201010556718A CN101997926A CN 101997926 A CN101997926 A CN 101997926A CN 2010105567180 A CN2010105567180 A CN 2010105567180A CN 201010556718 A CN201010556718 A CN 201010556718A CN 101997926 A CN101997926 A CN 101997926A
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Abstract
The invention relates to a method for remotely maintaining multiple terminals based on a 3G network, comprising the following steps of: setting up a proxy server used for intercepting port connection and NAT (Network Address Translation) port mapping of a controlled terminal; carrying out NAT port synchronous mapping on connecting ports of a plurality of controlled terminals by the proxy server subjected to 3G network encryption connection of the plurality of controlled terminals and the proxy server, and transforming the controlled terminals into remote maintenance ports; and carrying out data exchange on remote maintenance terminal software with the controlled terminal through the maintenance ports, thereby realizing maintenance work on each controlled terminal work station. The invention provides a multiterminal remote maintenance method which has the advantages of high speed, safety and low cost and overcomes the disadvantages of high maintenance cost and large human resource consumption of the traditional method.
Description
Technical field
The invention belongs to communication technical field, particularly relate to a kind of remote maintenance multiple terminals method based on 3G network.
Background technology
Along with the comprehensive of computer technology and network technology popularizes, the information automation of all trades and professions is used and has also been obtained development energetically in recent years.Such as a lot of power plant, steel mill, the information collecting device of transformer station, the networking mode by local area network (LAN) gathers the information interaction that collects, and handles statistics etc.Daily maintenance is generally undertaken by the local terminal that is connected with local area network (LAN) by local staff, but when the insurmountable on-the-spot problem of abnormal conditions or local staff takes place, the technical staff of relevant producer will rush towards the in-situ processing problem, and remote maintenance is a kind of convenience, efficient and lower-cost maintenance mode, but the speed of telecommunication, the safety of communication data, and the key issue that can be become remote maintenance simultaneously by the terminal quantity of remote maintenance again.The thought of remote maintenance is to sign in to on-the-spot controlled terminal from Remote client, utilizes on-the-spot controlled terminal to carry out exchanges data between on-the-spot machine and the remote terminal, and on-the-spot controlled terminal itself is left intact to the data of exchange.
Summary of the invention
Technical problem to be solved by this invention is: the software program by 3G network and establishment is transmitted the data between the computer, thereby provide a kind of traffic rate higher, fail safe is stronger, and can safeguard the remote maintenance implementation method of a plurality of controlled terminals simultaneously.
For solving the problems of the technologies described above, the invention provides a kind of remote maintenance multiple terminals method based on 3G network, it is characterized in that: may further comprise the steps:
1) offers acting server, be used to intercept the port connection and the nat port mapping of controlled terminal;
2) a plurality of controlled terminals carry out TCP with acting server and are connected by 3G network, use software respectively;
3) Remote client uses the remote synchronization mapped port of software log-on proxy server, and corresponding controlled terminal is safeguarded.
Aforesaid remote maintenance multiple terminals method based on 3G network, it is characterized in that: in described step 3), when acting on behalf of the connection that server perceives on-the-spot controlled terminal, can send message to Remote client, notify it to have controlled terminal to need to safeguard, or Remote client initiatively lands acting server, learnt that by inquiry on-the-spot controlled terminal needs to safeguard, Remote client is after having learnt that on-the-spot controlled terminal needs are maintained, start the on-the-spot controlled terminal NAT mapped port that software program lands acting server, carry out data interaction by acting server and on-the-spot controlled terminal, thereby finish the needed whole remote operations of on-the-spot controlled terminal.
Aforesaid remote maintenance multiple terminals method based on 3G network is characterized in that: a plurality of controlled terminals are connected with acting server simultaneously, and are mapped to different remote maintenance ports simultaneously.
Aforesaid remote maintenance multiple terminals method based on 3G network is characterized in that: described a plurality of controlled terminals pass through long-range map maintenance port separately, and are simultaneously maintained.
Aforesaid remote maintenance multiple terminals method based on 3G network is characterized in that: adopt OpenSSH safety encipher agreement between described controlled terminal and the acting server.
Aforesaid remote maintenance multiple terminals method based on 3G network is characterized in that: described Remote client log-on proxy server adopts OpenSSH safety encipher agreement.
Principle of the present invention is: set up link between two machines in different sub-network in order to allow, need a public acting server to carry out data forwarding for equipment or PC in these two different sub-networks, like this as long as the machine in the subnet can insert Intenet by the 3G card of surfing Internet, just can carry out communication by this acting server with public network address, the agency service program of this acting server operation is used to intercept the port connection and the nat port mapping of controlled terminal.
A plurality of controlled terminals are set up TCP by 3G card of surfing Internet access Internet with the acting server with public network address and are connected after startup.The unified management of nat port mapping is carried out in the connectivity port of a plurality of controlled terminals that acting server will connect.Remote client inserts Internet by Intranet or 3G card of surfing Internet, lands the acting server with public network address, sets up TCP with the port of each respective remote terminal in its management and is connected the realization data interaction.
The present invention has solved the communication speed problem by present full-fledged 3G network, by using OpenSSH safety encipher agreement to solve the communication data safety issue, OpenSSH can encrypt the data of all transmission, the attack pattern of " go-between " can not be realized, and can prevent DNS and IP spoofing.It also have an extra benefit be the transmission data through overcompression, can accelerate transmitting speed.Many controlled terminals connectivity port synchronization map administrative skill by acting server has solved a plurality of controlled terminals simultaneously by the problem of remote maintenance.
Description of drawings
Fig. 1 is a networking schematic diagram of the present invention.
Fig. 2 is a software configuration schematic diagram of the present invention.
Embodiment
Fig. 1 is a networking schematic diagram of the present invention, and Fig. 2 is a software configuration schematic diagram of the present invention, below in conjunction with accompanying drawing the present invention is done concrete introduction.
As shown in Figure 1, when needs carried out remote maintenance work, the field personnel at first opened on-the-spot controlled terminal, connected 3G network by the 3G card of surfing Internet, started software program then, encrypted to connect acting server.This moment, acting server perceived the connection of on-the-spot controlled terminal, can send message to Remote client, notified it to have controlled terminal to need to safeguard, or Remote client initiatively lands acting server, had learnt that by inquiry on-the-spot controlled terminal needs to safeguard.Remote client is after having learnt that on-the-spot controlled terminal needs are maintained, start the on-the-spot controlled terminal NAT mapped port that software program lands acting server, carry out data interaction by acting server and on-the-spot controlled terminal, thereby finish the needed whole remote operations of on-the-spot controlled terminal.
After a plurality of on-the-spot controlled terminals connected acting server by 3G network, acting server can carry out the nat port mapping to these on-the-spot controlled terminal connectivity ports, and unified management, makes port mapping table.Remote client lands can pick out from the nat port mapping table behind the acting server wants the controlled terminal safeguarded at present, and the NAT mapped port that connects this controlled terminal is carried out data interaction by acting server and on-the-spot controlled terminal.
The data of transmission over networks all are based on OpenSSH server and OpenSSH client process cryptographic algorithm data encrypted in the whole process, and therefore whole data transmission procedure is safer.
Fig. 2 is a software configuration schematic diagram of the present invention, as shown in the figure, on-the-spot controlled terminal Client A sets up the TCP socket with acting server Server A and is connected, server is after receiving the connection request of on-the-spot controlled terminal, at first set up Server B, the wait Remote client connects, and the maintained information broadcast that on-the-spot controlled terminal is provided is to Remote client.Remote client is after receiving these information, and Clinet B and link address are appointed as address that Server B shines upon out and are set up the TCP socket with port and be connected.
On-the-spot controlled terminal Client A sees through Client A and is connected with socket between the Server A and institute's data to be processed are passed through the OpenSSH encryption is sent to acting server, acting server receive can be connected with socket between the Client B by Server B after the enciphered data to be processed and send institute's enciphered data to be processed to Remote client, Remote client software is handled enciphered data to be processed again.Otherwise Remote client Client B sees through Client B and is connected with socket between the Server B and institute's data to be processed are passed through the OpenSSH encryption is sent to acting server, acting server receive can be connected with socket between the Client A by Server A after the enciphered data to be processed and send institute's enciphered data to be processed to on-the-spot controlled terminal, on-the-spot controlled terminal software is handled enciphered data to be processed again.
Claims (6)
1. remote maintenance multiple terminals method based on 3G network is characterized in that: may further comprise the steps:
1) offers acting server, be used to intercept the port connection and the nat port mapping of controlled terminal;
2) a plurality of controlled terminals carry out TCP with acting server and are connected by 3G network, use software respectively;
3) Remote client uses the remote synchronization mapped port of software log-on proxy server, and corresponding controlled terminal is safeguarded.
2. the remote maintenance multiple terminals method based on 3G network according to claim 1, it is characterized in that: in described step 3), when acting on behalf of the connection that server perceives on-the-spot controlled terminal, can send message to Remote client, notify it to have controlled terminal to need to safeguard, or Remote client initiatively lands acting server, learnt that by inquiry on-the-spot controlled terminal needs to safeguard, Remote client is after having learnt that on-the-spot controlled terminal needs are maintained, start the on-the-spot controlled terminal NAT mapped port that software program lands acting server, carry out data interaction by acting server and on-the-spot controlled terminal, thereby finish the needed whole remote operations of on-the-spot controlled terminal.
3. the remote maintenance multiple terminals method based on 3G network according to claim 1 and 2 is characterized in that: a plurality of controlled terminals are connected with acting server simultaneously, and are mapped to different remote maintenance ports simultaneously.
4. the remote maintenance multiple terminals method based on 3G network according to claim 3 is characterized in that: described a plurality of controlled terminals pass through long-range map maintenance port separately, and are simultaneously maintained.
5. the remote maintenance multiple terminals method based on 3G network according to claim 1 and 2 is characterized in that: adopt OpenSSH safety encipher agreement between described controlled terminal and the acting server.
6. the remote maintenance multiple terminals method based on 3G network according to claim 1 and 2 is characterized in that: described Remote client log-on proxy server adopts OpenSSH safety encipher agreement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105567180A CN101997926A (en) | 2010-11-24 | 2010-11-24 | Method for remotely maintaining multiple terminals based on 3G network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105567180A CN101997926A (en) | 2010-11-24 | 2010-11-24 | Method for remotely maintaining multiple terminals based on 3G network |
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| CN101997926A true CN101997926A (en) | 2011-03-30 |
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| CN2010105567180A Pending CN101997926A (en) | 2010-11-24 | 2010-11-24 | Method for remotely maintaining multiple terminals based on 3G network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270263A (en) * | 2014-09-19 | 2015-01-07 | 大唐移动通信设备有限公司 | Maintenance method and system for TCP connection |
| CN107995019A (en) * | 2016-10-27 | 2018-05-04 | 南京南瑞继保电气有限公司 | Network equipment method and system are safeguarded in a kind of remote debugging based on virtual linkage |
| WO2018184594A1 (en) * | 2017-04-07 | 2018-10-11 | 同方威视技术股份有限公司 | Method for remotely controlling device and remote control system |
| CN108989424A (en) * | 2018-07-13 | 2018-12-11 | 网宿科技股份有限公司 | A kind of method and system remotely controlled |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104270263A (en) * | 2014-09-19 | 2015-01-07 | 大唐移动通信设备有限公司 | Maintenance method and system for TCP connection |
| CN104270263B (en) * | 2014-09-19 | 2018-02-23 | 大唐移动通信设备有限公司 | A kind of maintaining method and system of TCP connections |
| CN107995019A (en) * | 2016-10-27 | 2018-05-04 | 南京南瑞继保电气有限公司 | Network equipment method and system are safeguarded in a kind of remote debugging based on virtual linkage |
| WO2018184594A1 (en) * | 2017-04-07 | 2018-10-11 | 同方威视技术股份有限公司 | Method for remotely controlling device and remote control system |
| CN108989424A (en) * | 2018-07-13 | 2018-12-11 | 网宿科技股份有限公司 | A kind of method and system remotely controlled |
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Application publication date: 20110330 Assignee: Nanjing Guodian Nanjing Grid Automation Co., Ltd. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2012320000943 Denomination of invention: Method for remotely maintaining multiple terminals based on 3G network License type: Common License Record date: 20120911 |
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Application publication date: 20110330 |