CN103237092A - Method and device for accessing private network hard disk video recorder - Google Patents
Method and device for accessing private network hard disk video recorder Download PDFInfo
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- CN103237092A CN103237092A CN2013101130756A CN201310113075A CN103237092A CN 103237092 A CN103237092 A CN 103237092A CN 2013101130756 A CN2013101130756 A CN 2013101130756A CN 201310113075 A CN201310113075 A CN 201310113075A CN 103237092 A CN103237092 A CN 103237092A
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Abstract
The invention provides a method and a device for accessing a private network hard disk video recorder. A monitor terminal is arranged on the outer side of NAT (network address translation) equipment, the hard disk video recorder is arranged on the inner side of the NAT equipment, and the outer side of the NAT equipment is further provided with a linking server. A message with a hard disk video recorder ID (identity) to the link server when the monitor terminal visits the hard disk video recorder; a target IP (internet protocol) is capsulated as the outer network IP after the monitor terminal receives a monitor port number of the to-be-visited hard disk video recorder and the outer network IP coupled back by the linking server, and a target port number is capsulated as a visit-requesting message of the monitor port number and then is sent; and the visit-requesting message is sent to the NAT equipment and is transmitted by the NAT equipment according to a established mapping forwarding table, so that monitoring service can be performed by the hard disk video recorder according to the visiting requests of the monitor terminal. With the method and the device, the visit from the monitor terminal of the outer network to the hard disk video recorder of the inner network can be realized without DDNS (dynamic domain name server) service under the condition of unstable outer network IPs of the NAT equipment.
Description
Technical field
The present invention relates to field of video monitoring, relate in particular to a kind of method and apparatus of visiting the private network DVR.
Background technology
In the small-sized monitoring networking of practical application at present, DVR NVR/DVR often is present in the NAT Intranet, as shown in Figure 1.The monitor terminal that is in public network wishes can link on this NVR/DVR, and the monitoring business of being correlated with comprises that live telecast is checked and playing back videos.The step of monitor terminal visit NVR/DVR is as follows: after public network IP address is obtained in the NVR/DVR dialing, and the public network IP address that proactive notification DDNS server oneself newly obtains, bind with the domain name of oneself this new IP address.Can send the DNS request earlier when monitor terminal is visited this NVR/DVR afterwards, the DDNS server can be responded with new public network IP address.Present problem is that the DDNS service all is to need to pay, and a NVR/DVR just needs a domain name, pays certain expense.
In addition, also need carry out the static configuration that the address is shone upon by hand on NAT device when the monitor terminal of outer net need be visited the NVR/DVR that is in Intranet, or enable UPNP and realize the mapping of automatic address.The general UPNP that adopts realizes the many of address mapping at present.But carry out the address with UPNP and be mapped with a defective: it is in the same double layer network that the NVR/DVR equipment of Intranet and the Intranet interface of NAT device are in the same network segment.
Summary of the invention
In view of this invention provides a kind of method of visiting the private network DVR, this method is applied to monitor terminal, and this monitor terminal is positioned at the outside of NAT device, and this DVR is positioned at the inboard of NAT device, the outside at NAT device also comprises the tie server, and wherein said method comprises:
When monitor terminal needs the access hard disk video tape recorder, send and carry the message of DVR ID to the tie server; Preserve the DVR information table on the tie server, each bar list item of this information table comprises DVR ID, listening port number and outer net IP address information;
After monitor terminal received the listening port number and outer net IP address of tie server feedback DVR to be visited, encapsulation purpose IP be this outer net IP address, and the destination slogan be the also transmission of access request message of this listening port number; This access request message will be sent to NAT device, be transmitted according to the mapping of setting up by NAT device and transmit described access request message, handle so that DVR is carried out monitoring business according to the access request of monitor terminal.
The present invention also provides a kind of device of visiting the private network DVR, and this device is applied to monitor terminal, and this monitor terminal is positioned at the outside of NAT device, this DVR is positioned at the inboard of NAT device, it is characterized in that also comprise the tie server in the outside of NAT device, described device comprises:
The visit information acquisition module is used for sending and carrying the message of DVR ID to the tie server when needs access hard disk video tape recorder; Preserve the DVR information table on the tie server, each bar list item of this information table comprises DVR ID, listening port number and outer net IP address information; Receive listening port number and the outer net IP address of tie server feedback DVR to be visited;
The access request sending module, being used for encapsulation purpose IP be this outer net IP address, the destination slogan be the also transmission of access request message of this listening port number; This access request message will be sent to NAT device, be transmitted according to the mapping of setting up by NAT device and transmit described access request message, handle so that DVR is carried out monitoring business according to the access request of monitor terminal.
Beneficial effect of the present invention: under the unfixed situation of the outer net IP of NAT device, need not the DDNS service and can finish the object of the invention; In addition, also provide flexible automatic NAT list item mapping scheme.
Description of drawings
Fig. 1 is the network diagram of existing a kind of supervisory control system.
Fig. 2 is embodiment of the invention flow chart.
Fig. 3 is embodiment of the invention monitor network figure.
Fig. 4 is the building-block of logic of apparatus of the present invention.
Embodiment
Below in conjunction with embodiment the present invention program is described.The solution of the present invention is applied to following supervisory control system: monitor terminal and DVR are isolated by NAT device, and monitor terminal is arranged in outer net, and DVR is arranged in private network, and also have a tie server in the outer net.This tie server is the server with outer net domain name that monitoring manufacturer is placed on outer net, can directly use the existing server of monitoring manufacturer, but need increase functions more of the present invention in the above.This tie server exist for monitor terminal easily the access hard disk video tape recorder provide may.Being named as the tie server as for this server mainly is the cause that plays monitor terminal and the effect of DVR tie according to this server in whole proposal, hereinafter will describe in detail.The DVR here comprises NVR(Network Video Recorder) and DVR(Digital Video Recorder).
Referring to Fig. 2 embodiment of the invention flow chart.
DVR in S21, the private network is initiated to connect to the tie server, carries ID and the listening port information of DVR in this link information.
The id information of DVR is used for distinguishing DVR, and the mode of multiple sign id information can be arranged.Such as the MAC Address of DVR.Name is registered at the tie server if DVR has the monitor terminal of use in advance, can use this monitor terminal name as its id information, certainly this monitor terminal name need be unique, and namely the monitor terminal name with other DVR registration uses does not repeat.Listening port number is that DVR externally provides service employed port numbers, after DVR starts this service, can constantly intercept this port numbers, will handle in case detect the message that mails to its port numbers.So DVR need need listening port information notice its equipment of visit.In the present embodiment, the listening port information that each DVR sends to the tie server also needs the listening port information that provides with other DVR different.It is multiple to guarantee that the listening port diverse ways can have, such as, use the MAC Address of DVR to carry out certain computing, so because the unique port numbers that generally calculates of MAC Address also is unique.The tie server can carry out perception in addition, if the listening port that DVR and other DVR before provide is number identical, the notice DVR is made amendment.
DVR can start the back and initiate to connect to the tie server.Such as the domain name of pre-configured tie server on the DVR, DVR starts the back and initiates to connect to this domain name.
After S22, NAT device receive the connection message of DVR, carry out mailing to the tie server after the NAT conversion.
The conversion regime of NAT has three kinds, i.e. static conversion Static Nat, dynamic translation Dynamic Nat and the multiplexed OverLoad of port.The present embodiment discussion be multiplexed (Port address Translation, PAT)) conversion regime of port.Port is multiplexed refer to change go out packet source port and carry out port translation, the All hosts of internal network all can be shared a legal outside ip address and realize external visit.
So the source IP address of the connection message that DVR is sent has been modified to the IP address of NAT device outer net, source port number also has been carried out modification.Source IP address after the connection message that each DVR in the private network sends is modified all is identical, and the source port number after being modified is then different.
S23, tie server set up the DVR information table according to the connection message of the DVR that receives, and each bar list item of this information table comprises DVR ID, listening port number and the outer net IP address information of DVR.
What the outer net IP address of DVR referred to here is exactly the outer net IP address of NAT.So in the DVR information table, can find that the outer net IP address of DVR is identical.
S24, tie server send at the response message that connects message, and this response message carries the outer net IP address of DVR.
This step is not necessary.Usually the NAT conversion is transparent to the equipment in the private network, here by the tie server inform the employed outer net IP of DVR address mainly be for follow-up stride three layers realize UPNP automatically mapping possibility is provided, please join hereinafter description.
When S25, monitor terminal needed the access hard disk video tape recorder, the mode that adds hard disk video tape recorder ID suffix by the tie server domain name sent to the tie server with access request.
After S26, tie server receive the access request of monitor terminal, according to the DVR ID in the suffix of domain name inquiry DVR information table, feed back listening port number and the outer net IP address of corresponding DVR to monitor terminal.
Monitor terminal can oneself the IE browser or other self-defining software in the domain name of input tie server and the ID suffix of DVR, such as www.uniview.com/ID1.Www.uniview.com is the domain name of tie server, and this domain name has fixed domain name to resolve on public network, so just can link this tie server by this domain name monitor terminal; ID1 represents the id information of DVR, and the tie server is according to this information inquiry DVR information table, obtains and listening port that the DVR of this ID correspondence externally provides number and outer net IP address, gives monitor terminal with these feedback information.
After S27, monitor terminal were received the listening port number and outer net IP address of DVR of need visits of tie server feedback, encapsulation purpose IP be this outer net IP address, and the destination slogan be the also transmission of access request message of this listening port number.
After monitor terminal has had the listening port information and outer net IP address information that DVR provides, just known to DVR request service destination slogan and purpose IP address.
After S28, NAT device receive the message of the access hard disk video tape recorder that monitor terminal sends, transmit according to the mapping of having set up and to transmit this visit message.
Mapping on the NAT is transmitted and how to be set up, and the most direct way is exactly manual configuration.But manual configuration is loaded down with trivial details, easily makes mistakes, and does not generally recommend.Another way is exactly mapping automatically.If realizing the mapping of NAT list item will consider in two kinds of situation with automatic way: private network is same double layer network; Private network is a three-layer network.Be under the situation of double layer network at private network, can directly use the technology of UPNP to realize.When private network is three-layer network, if use the UPNP technology just need transform it.The NAT list item of below describing in detail when how the UPNP technology being transformed to realize that private network is three-layer network shines upon automatically.
Method one:
If be provided with the Intranet IP address of NAT device on the DVR in advance, can directly send destination address and be the clean culture SSDP message of this Intranet IP address, carry the private network IP address of this DVR and listening port number in this SSDP message.Even if private network is three-layer network like this, NAT equipment also can directly be received the SSDP message that DVR sends, and carries out the mapping of forwarding-table item according to the content in this SSDP message.DVR can send the SSDP message of this clean culture after sending the connection message to the tie server.Certainly better a kind of the realization is that DVR sends this SSDP message again after receiving the affirmation message at the connection message of tie server.The transmission that other of follow-up UPNP are controlled mutual message can realize according to existing mode.
Method two:
If DVR is known NAT device outer net IP address, can directly send destination address and be the clean culture SSDP message of this outer net IP address, carry the private network IP address of this DVR and listening port number in this SSDP message.Even if private network is three-layer network like this, NAT device also can directly be received the SSDP message that DVR sends, and carries out the mapping of forwarding-table item according to the content in this SSDP message.DVR can send the SSDP message of this clean culture after sending the connection message to the tie server.Certainly better a kind of the realization is that DVR sends this SSDP message again after receiving the affirmation message at the connection message of tie server.The transmission that other of follow-up UPNP are controlled mutual message can realize according to existing mode.DVR knows that the method for NAT device outer net IP address please join step S23.
Method three:
Utilize multicast to realize the transmission of SSDP message.At first, NAT device adds a default multicast group, is 239.255.255.250 such as multicast address.The three-layer network of Intranet also needs to support multicast protocol.NAT device is after adding multicast group, and DVR sends SSDP message to the multicast address of this multicast group correspondence, carries the private network IP address of this DVR and listening port number in this SSDP message.NAT device carries out the mapping of forwarding-table item according to the content in this SSDP message.DVR can send the SSDP message of this clean culture after sending the connection message to the tie server.Certainly better a kind of the realization is that DVR sends this SSDP message again after receiving the affirmation message at the connection message of tie server.The transmission that other of follow-up UPNP are controlled mutual message can realize according to existing mode.
Come the present invention is simply set forth below in conjunction with a concrete example.
Please join Fig. 3, dispose the domain name www.uniview.com of tie server on the NVR1, NVR1 starts the back to initiate to connect from this domain name of trend.Domain name resolution server on the network is resolved this domain name and is provided corresponding IP address, as 200.10.10.10.NVR1 is purpose IP with 200.10.10.10, and self Intranet IP address 192.168.10.1 is source IP, sends to the tie server and carries the device id (as ID1) of self and the message of listening port number (as 7789).
NAT1 receives and carries out the NPAT conversion behind this message, and source IP address 192.168.10.1 is converted to its outer net IP address 211.0.2.1, and the source port number that will connect sends to the tie server with message after also changing.
The tie server is set up the list item of NVR1 accordingly in the DVR information table:
Table 1
NVR2 in this private network initiate to connect (ID that carries is ID2, listening port number be 10341) to the tie server in the same way, and the tie server adds the list item at NVR2 in the DVR information table:
Table 2
NVR3 in another private network also initiates connection to the tie server in the same way, and (ID that carries is ID3, listening port number is 20786), IP address after the NAT2 conversion is 200.1.1.1, and the tie server adds the list item at NVR3 in DVR:
Table 3
The tie server has added list item in the DVR information table, can carry the outer net IP address of DVR in this confirmation message respectively to NVR1, NVR2 and NVR3 feedback acknowledgment message, is respectively 211.0.2.1,211.0.2.1 and 200.1.1.1.Because NAT device has recorded the address port transitional information in this locality when the NVR of private network before connects the tie server and is NPAT, so the affirmation message that the tie server sends to NVR1, NVR2 and NVR3 can be transmitted during through NAT device like a cork.
NVR1, NVR2 and NVR3 trigger the mapping of carrying out forwarding-table item of NAT after receiving the outer net IP address information that the tie server carries automatically by the mode of UPNP.The forwarding mapping item of the last foundation of NAT is as follows:
Table 4
When the outer net monitor terminal needs video recording on the playback NVR1, input " www.uniview.com/ID1 " in the IE browser of oneself, this web request will arrive the tie server, the tie server is searched the DVR information table according to the suffix in the domain name " ID1 ", and the outer net IP address 211.0.2.1 of NVR1 and listening port numbers 7789 informed to monitor terminal.
Monitor terminal uses this outer net IP address 211.0.2.1 and listening port number 7789 visits of opening NVR1.The purpose IP address of playback request is 211.0.2.1, and the destination slogan is 7789.After this playback request message arrived NAT device, NAT device was revised as 192.168.10.1 according to the mapping forwarding-table item of table 4 with the purpose IP address of playback request playback request is sent.NVR1 will receive the playback request that monitor terminal sends, thereby handle this playback request.
When the present invention program need visit DVR in the Intranet at monitor terminal, obtain the access hard disk video tape recorder and the relevant information that must obtain from the tie server of outer net earlier, then again according to relevant information access hard disk video tape recorder.The tie server therefrom plays the effect of similar tie.Served with regard to the DDNS that need not to pay like this.
Based on same inventive concept, the present invention also provides a kind of device of visiting the private network DVR, this device is applied to monitor terminal, this monitor terminal is positioned at the outside of NAT device, this DVR is positioned at the inboard of NAT device, also comprise a tie server in the outside of NAT device, this device can comprise from logical partitioning: visit information acquisition module 401 and access request sending module 402, please join Fig. 4.
This visit information acquisition module 401 is used for sending and carrying the message of DVR ID to the tie server when needs access hard disk video tape recorder; Preserve the DVR information table on the tie server, each bar list item of this information table comprises DVR ID, listening port number and outer net IP address information; Receive listening port number and the outer net IP address of tie server feedback DVR to be visited.This visit information obtains after the domain name that the DVR ID that carries in the message that sends to the tie server is positioned at the tie server.
This access request sending module 402, being used for encapsulation purpose IP be this outer net IP address, the destination slogan be the also transmission of access request message of this listening port number; This access request message will be sent to NAT device, be transmitted according to the mapping of setting up by NAT device and transmit described access request message, handle so that DVR is carried out monitoring business according to the access request of monitor terminal.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. method of visiting the private network DVR, this method is applied to monitor terminal, and this monitor terminal is positioned at the outside of NAT device, this DVR is positioned at the inboard of NAT device, it is characterized in that also comprise the tie server in the outside of NAT device, described method comprises:
When monitor terminal needs the access hard disk video tape recorder, send and carry the message of DVR ID to the tie server; Preserve the DVR information table on the tie server, each bar list item of this information table comprises DVR ID, listening port number and outer net IP address information;
After monitor terminal received the listening port number and outer net IP address of tie server feedback DVR to be visited, encapsulation purpose IP be this outer net IP address, and the destination slogan be the also transmission of access request message of this listening port number; This access request message will be sent to NAT device, be transmitted according to the mapping of setting up by NAT device and transmit described access request message, handle so that DVR is carried out monitoring business according to the access request of monitor terminal.
2. the method for claim 1, it is characterized in that, the DVR information table of preserving on the tie server is that the tie server is set up after receiving the connection message that DVR is initiated to the tie server through NAT device, carries ID and the listening port information of DVR in this connection message.
3. the method for claim 1, it is characterized in that, when the inboard network of described NAT was three-layer network, it be NAT device receiving destination address that DVR sends was to set up behind the UPNP message of the multicast group address of net address or NAT device adding in net address or the NAT device NAT device outside that described mapping is transmitted.
4. the method for claim 1 is characterized in that, monitor terminal sends to the DVR ID that carries in the message of tie server and is positioned at after the domain name of tie server.
5. device of visiting the private network DVR, this device is applied to monitor terminal, and this monitor terminal is positioned at the outside of NAT device, this DVR is positioned at the inboard of NAT device, it is characterized in that also comprise the tie server in the outside of NAT device, described device comprises:
The visit information acquisition module is used for sending and carrying the message of DVR ID to the tie server when needs access hard disk video tape recorder; Preserve the DVR information table on the tie server, each bar list item of this information table comprises DVR ID, listening port number and outer net IP address information; Receive listening port number and the outer net IP address of tie server feedback DVR to be visited;
The access request sending module, being used for encapsulation purpose IP be this outer net IP address, the destination slogan be the also transmission of access request message of this listening port number; This access request message will be sent to NAT device, be transmitted according to the mapping of setting up by NAT device and transmit described access request message, handle so that DVR is carried out monitoring business according to the access request of monitor terminal.
6. device as claimed in claim 5, it is characterized in that, the DVR information table of preserving on the tie server is that the tie server is set up after receiving the connection message that DVR is initiated to the tie server through NAT device, carries ID and the listening port information of DVR in this connection message.
7. device as claimed in claim 5, it is characterized in that, when the inboard network of described NAT was three-layer network, it be NAT device receiving destination address that DVR sends was to set up behind the UPNP message of the multicast group address of net address or NAT device adding in net address or the NAT device NAT device outside that described mapping is transmitted.
8. device as claimed in claim 5 is characterized in that, visit information obtains after the domain name that the DVR ID that carries in the message that sends to the tie server is positioned at the tie server.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491346A (en) * | 2013-09-05 | 2014-01-01 | 浙江宇视科技有限公司 | Method and equipment for networking social monitoring resources and monitoring platform |
| CN104010052A (en) * | 2014-06-11 | 2014-08-27 | 浙江宇视科技有限公司 | UPnP-based media connecting method in monitoring system |
| CN104486589A (en) * | 2014-12-25 | 2015-04-01 | 浙江宇视科技有限公司 | Assess method and device of GVRP-based video monitoring system |
| CN104506405A (en) * | 2014-12-23 | 2015-04-08 | 浙江宇视科技有限公司 | Method and device for cross-domain access |
| CN106878664A (en) * | 2015-12-10 | 2017-06-20 | 北京航天长峰科技工业集团有限公司 | The concurrently access of the network video device being limited for number of users and management method |
| CN110798542A (en) * | 2019-10-28 | 2020-02-14 | 北京奇艺世纪科技有限公司 | Method and system for acquiring IP address |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030903A (en) * | 2006-03-03 | 2007-09-05 | 南京艾迪恩斯数字技术有限公司 | System for accessing, monitoring and exchanging network video |
| CN101110811A (en) * | 2006-07-18 | 2008-01-23 | 北京华纬讯电信技术有限公司 | Method for controlling media data transmission of video system |
| US20080199155A1 (en) * | 2007-02-16 | 2008-08-21 | Envysion, Inc. | System and Method for Video Recording, Management and Access |
| CN102170548A (en) * | 2011-01-28 | 2011-08-31 | 杭州海康威视数字技术股份有限公司 | Mutually exclusive resource remote-access method and digital video recorder |
-
2013
- 2013-04-02 CN CN201310113075.6A patent/CN103237092B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030903A (en) * | 2006-03-03 | 2007-09-05 | 南京艾迪恩斯数字技术有限公司 | System for accessing, monitoring and exchanging network video |
| CN101110811A (en) * | 2006-07-18 | 2008-01-23 | 北京华纬讯电信技术有限公司 | Method for controlling media data transmission of video system |
| US20080199155A1 (en) * | 2007-02-16 | 2008-08-21 | Envysion, Inc. | System and Method for Video Recording, Management and Access |
| CN102170548A (en) * | 2011-01-28 | 2011-08-31 | 杭州海康威视数字技术股份有限公司 | Mutually exclusive resource remote-access method and digital video recorder |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491346A (en) * | 2013-09-05 | 2014-01-01 | 浙江宇视科技有限公司 | Method and equipment for networking social monitoring resources and monitoring platform |
| CN103491346B (en) * | 2013-09-05 | 2017-01-11 | 浙江宇视科技有限公司 | Method and equipment for networking social monitoring resources and monitoring platform |
| CN104010052A (en) * | 2014-06-11 | 2014-08-27 | 浙江宇视科技有限公司 | UPnP-based media connecting method in monitoring system |
| CN104010052B (en) * | 2014-06-11 | 2017-06-13 | 浙江宇视科技有限公司 | Media connection method based on UPnP in a kind of monitoring system |
| CN104506405A (en) * | 2014-12-23 | 2015-04-08 | 浙江宇视科技有限公司 | Method and device for cross-domain access |
| CN104506405B (en) * | 2014-12-23 | 2018-08-31 | 浙江宇视科技有限公司 | The method and device of cross-domain access |
| CN104486589A (en) * | 2014-12-25 | 2015-04-01 | 浙江宇视科技有限公司 | Assess method and device of GVRP-based video monitoring system |
| CN106878664A (en) * | 2015-12-10 | 2017-06-20 | 北京航天长峰科技工业集团有限公司 | The concurrently access of the network video device being limited for number of users and management method |
| CN110798542A (en) * | 2019-10-28 | 2020-02-14 | 北京奇艺世纪科技有限公司 | Method and system for acquiring IP address |
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| Publication number | Publication date |
|---|---|
| CN103237092B (en) | 2016-03-23 |
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