CN109962990A - A kind of method and device automatically accessing monitoring device in NAT - Google Patents
A kind of method and device automatically accessing monitoring device in NAT Download PDFInfo
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- CN109962990A CN109962990A CN201711434930.8A CN201711434930A CN109962990A CN 109962990 A CN109962990 A CN 109962990A CN 201711434930 A CN201711434930 A CN 201711434930A CN 109962990 A CN109962990 A CN 109962990A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2521—Translation architectures other than single NAT servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/255—Maintenance or indexing of mapping tables
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5061—Pools of addresses
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a kind of method and devices for automatically accessing monitoring device in NAT, applied to the headend equipment in video surveillance network as agency, first obtain the IP address of the headend equipment in router, then the IP address for the headend equipment that will acquire is compared with local port mapping information list, it is sent to the headend equipment being not recorded in local port mapping information list and obtains port mapping information message, the port mapping information for obtaining the headend equipment is recorded in port mapping information list；Hereafter, the rear end management equipment outside receiving router obtains the message of port mapping information list, and rear end management equipment is given in the port mapping information list of return recording.Method and device of the invention realizes that the equipment in NAT automatically accesses the management equipment outside NAT, reduces the configuration of router, reduces the operation to IPC, be obviously improved on user experience.
Description
Technical field
The invention belongs to technical field of video monitoring more particularly to it is a kind of automatically access in NAT the method for monitoring device and
Device.
Background technique
In recent years, with computer, network and image procossing, the rapid development of transmission technology, video monitoring is popularized
Change trend is more and more obvious.Video monitoring system be it is a kind of video information is digitized, and pass through cable network or wireless network
The monitoring system of transmission.Video monitoring is the important component of safety and protection system, video monitoring is intuitive with it, it is accurate and
When and the information content it is abundant and be widely used in many occasions.
However in the construction at complicated scene, according to construction environment, different, port and IP variation, design networking are complicated.
As Fig. 1 networking in, router enables NAT, and NVR accesses a router, under router under interchanger under same interchanger
Socket part divides IPC.Network hard disk video recorder NVR outside NAT can not search for automatically the net in addition NAT by standard ONVIF agreement
Network video camera IPC.
The prior art is the IPC realized in NVR addition router, need to obtain the IP address of the IPC in all-router, match
The all of the port for setting each IPC is mapped on router, real by the outer net IP address of configuration of IP C and port on NVR manually
The interconnection of existing IPC and NVR.Obviously, current technology scheme, configuration process redundancy is complicated, and all working is both needed to manual configuration, right
Technological know-how is more demanding, the more difficult completion of ordinary user.
Therefore, the IPC in router is quickly and effectively added, IPC network relevant configuration is reduced, promotes user experience, subtract
The problem of few deployment cost is urgent need to resolve.
Summary of the invention
It is existing for solving the object of the present invention is to provide a kind of method and device for automatically accessing monitoring device in NAT
For technology when adding the IPC in router, configuration work is both needed to manual configuration, more demanding to technological know-how, ordinary user compared with
The problem of hardly possible is completed.
To achieve the goals above, technical solution of the present invention is as follows:
A method of monitoring device in NAT is automatically accessed, is set applied to the front end in video surveillance network as agency
Standby, the video surveillance network further includes the rear end management equipment outside the router, described to automatically access monitoring in NAT and set
Standby method, comprising:
Obtain the IP address of the headend equipment in router；
The IP address for the headend equipment that will acquire is compared with local port mapping information list；
It is sent to the headend equipment being not recorded in local port mapping information list and obtains port mapping information message,
The port mapping information for obtaining the headend equipment is recorded in port mapping information list；
Rear end management equipment outside receiving router obtains the message of port mapping information list, and the port of return recording is reflected
It penetrates information list and gives rear end management equipment.
A kind of implementation of the invention, the IP address for obtaining the headend equipment in NAT, comprising:
Sending Receive message router to router is the dhcp address pool that headend equipment distributes, the dhcp address pool packet
Include the IP address that router is headend equipment distribution.
Another implementation of the invention, the IP address for obtaining the headend equipment in NAT, comprising:
Probe messages are sent, the IP address of the headend equipment in router is obtained.
Further, the method for automatically accessing monitoring device in NAT, in the IP for obtaining the headend equipment in router
Address, after the IP address for the headend equipment that will acquire is compared with local port mapping information list, further includes:
To being recorded in local port mapping information list, but the headend equipment for the IP address having not been obtained send it is true
Recognize message, if not receiving response message within the preset time, is deleted in local port mapping information list corresponding
Port mapping information.
Further, the IP address for obtaining the headend equipment in router, comprising:
According to the period of setting, the IP address of the headend equipment in router is periodically obtained.
The invention also provides a kind of device for automatically accessing monitoring device in NAT, applied to making in video surveillance network
For the headend equipment of agency, the video surveillance network further includes the rear end management equipment outside router, described automatic
Access the device of monitoring device in NAT, comprising:
Address acquisition module, for obtaining the IP address of the headend equipment in router；
Comparison module, the IP address of the headend equipment for will acquire are compared with local port mapping information list
Compared with；
Update module obtains port for sending to the headend equipment being not recorded in local port mapping information list
Map information message obtains the port mapping information of the headend equipment, is recorded in port mapping information list；
Sending module, for receiving router outside rear end management equipment obtain port mapping information list message, return
Rear end management equipment is given in the port mapping information list for returning record.
Wherein, the address acquisition module executes following steps when obtaining the IP address of the headend equipment in NAT:
Sending Receive message router to router is the dhcp address pool that headend equipment distributes, the dhcp address pool packet
Include the IP address that router is headend equipment distribution.
Or/and probe messages are sent, obtain the IP address of the headend equipment in router.
Further, the update module is also used to being recorded in local port mapping information list, but does not obtain
The headend equipment for the IP address got sends confirmation message, if not receiving response message within the preset time, in local
Corresponding port mapping information is deleted in port mapping information list.
Further, the address acquisition module is when obtaining the IP address of the headend equipment in router, according further to setting
The fixed period periodically obtains the IP address of the headend equipment in router.
A kind of method and device automatically accessing monitoring device in NAT proposed by the present invention is actively obtained by Agent IP C
The port mapping information of headend equipment in router, and update to locally, then by the interaction with NVR, return to routing
NVR outside device realizes that the equipment in NAT automatically accesses the management equipment outside NAT, reduces the configuration of router, reduce pair
The operation of IPC, is obviously improved on user experience.
Detailed description of the invention
Fig. 1 is video surveillance network of embodiment of the present invention schematic diagram；
Fig. 2 is a kind of method flow diagram for automatically accessing monitoring device in NAT of the present invention.
Specific embodiment
Technical solution of the present invention is described in further details with reference to the accompanying drawings and examples, following embodiment is not constituted
Limitation of the invention.
The scene of the technical program application as shown in Figure 1, enable NAT (Network Address on the router
Translation, network address translation), headend equipment such as web camera IPC, encoder etc. is deployed in router interior
In private network, rear end management equipment such as network hard disk video recorder NVR or VMS server etc. are in the outside of router.In the present embodiment
In, by taking IPC as an example, rear end management equipment is illustrated headend equipment by taking NVR as an example.
The general thought of the technical program is that an Agent IP C is arranged in NAT network segment, and Agent IP C is registered to NAT
Outer NVR, and managed by it, device list information in NAT is fed back to by NVR by interacting message, for no configuration mapping relations
IPC issue mapping requirement, completing port mapping obtains the mapped port of the IPC of configured mapping, and safeguard in a network segment
The list of devices of IPC.
As shown in Fig. 2, a kind of method for automatically accessing monitoring device in NAT of the technical program, is applied to video monitoring net
Headend equipment in network as agency, this method comprises:
Obtain the IP address of the headend equipment in router；
The IP address for the headend equipment that will acquire is compared with local port mapping information list；
It is sent to the headend equipment being not recorded in local port mapping information list and obtains port mapping information message,
The port mapping information for obtaining the headend equipment is recorded in port mapping information list；
Rear end management equipment outside receiving router obtains the message of port mapping information list, and the port of return recording is reflected
It penetrates information list and gives rear end management equipment.
Embodiment 1, as agency headend equipment to router send Receive message router be headend equipment distribute
Dhcp address pool, the dhcp address pool include the IP address that router is headend equipment distribution.
Specifically, as shown in Figure 1, the egress router of Intranet enables NAT, IPC1, IPC2 and IPC3 in NAT, and
For NVR outside NAT, the presence of NAT results in the IPC that NVR can not be searched in addition NAT.
IPC1 is in the LAN mouth of router, as agent equipment in the technical program, address 192.168.0.100,
The WAN of NVR and router mouth is 193.168.1.100 in same network segment, the address of NVR, and the address that NVR is configured on IPC is
193.168.1.100.The present embodiment is as the multiple addresses NVR of configuration are supported on the IPC1 of agency, and which is not described herein again.
IPC1 has the outer net IP address and port numbers of mapping by port mapping on the router, and IPC1 is to configuration
NVR sends the logon message of the outer net IP address for carrying router, the port numbers for receiving NVR message.
After NVR receives correct logon message, IP address, the port numbers of IPC1 are recorded, response of succeeding in registration is returned and disappears
Breath.
IPC1 is received succeed in registration response message after, record opposite end NVR IP address (it is subsequent sent every 30S it is primary
Keep alive Packet), the message for obtaining dhcp address pool is sent to router, obtains the DHCP that router is the distribution of interior forward end equipment
Address pool.
It is easily understood that after router in the IPC connection of router interior, by router by DHCP in NAT
Headend equipment IPC distribute IP address, for IPC distribution IP address form dhcp address pool.Such as router is wireless WIFI
Access point is that IPC distributes IP address by wireless WIFI access point after IPC is by being wirelessly connected upper router.Obvious IPC2,
IPC3 can obtain the IP address of DHCP distribution by router.
After IPC1 receives the response message for obtaining dhcp address pool, getting router is the distribution of interior forward end equipment
Dhcp address pool.The dhcp address pool that will acquire is compared with the port mapping information list locally saved.
By comparing, it may appear that a variety of situations, such as headend equipment within the initial stage, router all do not have in addition to IPC1
Port mapping is done, list is empty for the port mapping information of IPC1 local record, finds by the dhcp address pool of acquisition, address
IP address in pond is not in port mapping information list.Or, the IP address of some in address pool is believed in port mapping
It ceases in list, and has some not in port mapping information list.
Therefore, when the IP address that discovery is present in dhcp address pool but is not recorded in port mapping information list, this
Kind situation explanation has headend equipment to connect upper router, has got the IP address of DHCP distribution, but has not done port mapping.Cause
This, the IPC1 as agency is needed to the headend equipment for being present in dhcp address pool but being not recorded in port mapping information list
It sends and obtains port mapping information message.Such as discovery 192.168.0.101 is present in dhcp address pool but is not recorded in port
In map information list, and it is IPC2 that actually this address is corresponding, is the IP address that router is IPC2 distribution.
At this time the IP address of discovery IPC2 does port mapping also not in port mapping information list not yet, as
The IPC1 of agency sends to IPC2 and obtains port mapping information message.IPC2, which is received, obtains mapped port map information message
Afterwards, judge whether there is port mapping information, as without if mapped port, then IPC2 will to router sending port mapping request,
Router receives the successful information of return mapping after request, maps outer net IP address and port numbers for IPC2.IPC2 is reflected in port
After penetrating successfully, port mapping information after return mapping to Agent IP C1.Port mapping information includes the outer net IP address of mapping
And port numbers, it is mature technology about port mapping, which is not described herein again.
By the above process, the port mapping information that IPC2 is got as the IPC1 of agency is recorded in port mapping letter
It ceases in list.Private network IP address and port numbers and router mappings in port mapping information list including headend equipment
Outer net IP address and port numbers.
Hereafter, IPC1 receives the message that NVR obtains the map information list of interior forward end device port, the port of return recording
Map information list is to NVR.Such as obtained the port mapping information of IPC2 above, then at the end to NVR return recording
When mouth map information list, NVR has got the port mapping information of IPC2.To which NVR can initiate ONVIF probe messages,
Connection is established with IPC2, realizes the management to IPC2.
Similarly, IPC3 is similarly operated, which is not described herein again.It is easily understood that some IPC first connect in network
Enter, accessed after some IPC, therefore the present embodiment IPC1 needs periodically to go to obtain dhcp address pool, is compared and to not recording
Headend equipment in local port mapping information list, which is sent, obtains port mapping information message, obtains the headend equipment
Port mapping information is recorded in port mapping information list.
Embodiment 2, the headend equipment transmission probe messages as agency, with obtaining the IP of the headend equipment in router
Location.
In video monitoring system, also some IPC are arranged to static ip address, these IPC will not be on the router
It goes to obtain the IP address that DHCP is distributed, therefore the IP address of these IPC is not present in the dhcp address pool of router.
Specifically, as shown in Figure 1, such as IPC3 is configured with static IP address 192.168.0.102, IPC1 transmission
ONVIF probe messages, IPC3 are responded after receiving, and the IP address of itself are informed IPC1, so that IPC1 gets IPC3's
IP address.
Same as Example 1ly, by the IP address and local port mapping information list of the headend equipment that will acquire
After being compared, when discovery got IP address but be not recorded in port mapping information list headend equipment when, to
The headend equipment being not recorded in local port mapping information list, which is sent, obtains port mapping information message, obtains the front end
The port mapping information of equipment is recorded in port mapping information list.
Hereafter, it is sent as the IPC1 of agency to IPC3 and obtains port mapping information message.IPC3 receives acquisition mapping
After port mapping information message, port mapping information is judged whether there is, such as the mapped port without if, then IPC3 will be sent out to router
Port mapping requests are sent, router receives the successful information of return mapping after request, maps outer net IP address and port for IPC3
Number.IPC3 is after port mapping success, port mapping information after return mapping to Agent IP C1.Port mapping information includes reflecting
The outer net IP address and port numbers penetrated are mature technologies about port mapping, and which is not described herein again.
By the above process, the port mapping information that IPC3 is got as the IPC1 of agency is recorded in port mapping letter
It ceases in list.
Hereafter, IPC1 receives the message that NVR obtains the map information list of interior forward end device port, the port of return recording
Map information list is to NVR.Such as obtained the port mapping information of IPC3 above, then at the end to NVR return recording
When mouth map information list, NVR has got the port mapping information of IPC3.To which NVR can initiate ONVIF probe messages,
Connection is established with IPC3, realizes the management to IPC3.
In addition, the another embodiment of the technical program, since headend equipment IPC often changes in Intranet, such as
It removes or replacement, DHCP releases corresponding IP address, IPC1 also obtains the IP address less than IPC by probe message, needs
Port mapping information list on IPC1 is updated.
Therefore, a kind of method for automatically accessing monitoring device in NAT of the present embodiment is obtaining the headend equipment in router
IP address, after the IP address of the headend equipment that will acquire is compared with local port mapping information list, further includes:
Confirmation message is sent to the IP address for being recorded in local port mapping information list, but having not been obtained, if
It does not receive response message within the preset time, then deletes corresponding port mapping letter in local port mapping information list
Breath.
For example, obtaining dhcp address pool to router in IPC1, or send probe messages can not all obtain after IPC3 is removed
The IP address of IPC3, then when the IP address for the headend equipment that will acquire is compared with local port mapping information list, hair
There is record in local port mapping information list now, the IP address being but not present in the IP address of acquisition
192.168.0.102。
IPC1 sends confirmation message to 192.168.0.102, does not receive response message also after a time out, then deletes port and reflect
The 192.168.0.102 corresponding entry of information list is penetrated, i.e. the corresponding entry of deletion IPC3.
It is easily understood that sending the message for obtaining port mapping information list to IPC1 for the side NVR, IPC1 is received
After message, local port mapping information list is returned into NVR, NVR is the port for having the headend equipment in router
Map information establishes connection with the IPC in router, realizes the management to IPC so as to send ONVIF probe messages.
It can be periodically executed the operation of embodiment 1 or/and embodiment 2 as the IPC1 of agency, can also be obtained receiving NVR
The message of port mapping information list is taken to carry out the operation for once executing embodiment 1 or/and embodiment 2 again, it is local to update
Port mapping information list is then returned to NVR, realizes that NVR automatically accesses IPC.It is set in the front end obtained in router
Standby IP address is can be periodically executed the operation of embodiment 1, can also be periodically executed the operation of embodiment 2, or simultaneously periodically
The operation of embodiment 1 and embodiment 2 is executed, the technical program is without limitation.Certainly during actual deployment, in thing
In the case where being first connected to the network well, powers on to the router in network, headend equipment, rear end management equipment, then hold respectively
The operation of embodiment 1 of row or/and embodiment 2, so that it may update local port mapping information list, not need repeatedly
Periodic operation.The present embodiment regularly operates update, is to safeguard in time to the variation generated in network.
The technical program is automatically performed IPC port mapping in NAT in view of the deficiencies in the prior art, and search is added in NAT
IPC, when solving the IPC in the addition of the NVR outside existing NAT NAT, the complicated problem of IPC port mapping configuration, quickly and easily
Realize the IPC in the NVR search addition NAT outside NAT.Solve based on NVR can not fast search addition NAT in IPC monitoring
The networking application problem of system promotes user experience.
Accordingly with the above method, the technical program, which gives, a kind of automatically accesses the device of monitoring device in NAT
Embodiment, applied to the headend equipment in video surveillance network as agency, the video surveillance network further includes being located at routing
Rear end management equipment outside device, the device for automatically accessing monitoring device in NAT, comprising:
Address acquisition module, for obtaining the IP address of the headend equipment in router；
Comparison module, the IP address of the headend equipment for will acquire are compared with local port mapping information list
Compared with；
Update module obtains port for sending to the headend equipment being not recorded in local port mapping information list
Map information message obtains the port mapping information of the headend equipment, is recorded in port mapping information list；
Sending module, for receiving router outside rear end management equipment obtain port mapping information list message, return
Rear end management equipment is given in the port mapping information list for returning record.
Corresponding with the above method, a kind of embodiment of the technical program, the address acquisition module is obtaining in NAT
When the IP address of headend equipment, following steps are executed:
Sending Receive message router to router is the dhcp address pool that headend equipment distributes, the dhcp address pool packet
Include the IP address that router is headend equipment distribution.
Or/and probe messages are sent, obtain the IP address of the headend equipment in router.
Corresponding with the above method, update module described in the present embodiment is also used to being recorded in local port mapping letter
It ceases in list, but the headend equipment for the IP address having not been obtained sends confirmation message, if not receiving sound within the preset time
Message is answered, then deletes corresponding port mapping information in local port mapping information list.
Corresponding with the above method, address acquisition module described in the present embodiment is in the IP for obtaining the headend equipment in router
When address, according further to the period of setting, the IP address of the headend equipment in router is periodically obtained.
It is corresponding that the present embodiment automatically accesses the step of device with the above method of monitoring device in NAT, specific to operate
Process has carried out detailed elaboration in the embodiment of method, and which is not described herein again.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited, without departing substantially from essence of the invention
In the case where mind and its essence, those skilled in the art make various corresponding changes and change in accordance with the present invention
Shape, but these corresponding changes and modifications all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of method for automatically accessing monitoring device in NAT, applied to the headend equipment in video surveillance network as agency,
The video surveillance network further includes the rear end management equipment outside router, which is characterized in that described to automatically access NAT
The method of interior monitoring device, comprising:
Obtain the IP address of the headend equipment in router；
The IP address for the headend equipment that will acquire is compared with local port mapping information list；
It is sent to the headend equipment being not recorded in local port mapping information list and obtains port mapping information message, obtained
The port mapping information of the headend equipment is recorded in port mapping information list；
Rear end management equipment outside receiving router obtains the message of port mapping information list, the port mapping letter of return recording
Rear end management equipment is given in breath list.
2. the method for automatically accessing monitoring device in NAT as described in claim 1, which is characterized in that in the acquisition NAT
The IP address of headend equipment, comprising:
Sending Receive message router to router is the dhcp address pool that headend equipment distributes, and the dhcp address pool includes road
It is the IP address of headend equipment distribution by device.
3. the method for automatically accessing monitoring device in NAT as described in claim 1, which is characterized in that in the acquisition NAT
The IP address of headend equipment, comprising:
Probe messages are sent, the IP address of the headend equipment in router is obtained.
4. the method for automatically accessing monitoring device in NAT as described in claim 1, which is characterized in that described to automatically access NAT
The method of interior monitoring device, obtain router in headend equipment IP address, the IP address for the headend equipment that will acquire with
After local port mapping information list is compared, further includes:
To being recorded in local port mapping information list, but the headend equipment for the IP address having not been obtained sends confirmation report
Text deletes corresponding port in local port mapping information list if not receiving response message within the preset time
Map information.
5. the method for automatically accessing monitoring device in NAT as described in claim 1, which is characterized in that the acquisition router
The IP address of interior headend equipment, comprising:
According to the period of setting, the IP address of the headend equipment in router is periodically obtained.
6. a kind of device for automatically accessing monitoring device in NAT, applied to the headend equipment in video surveillance network as agency,
The video surveillance network further includes the rear end management equipment outside router, which is characterized in that described to automatically access NAT
The device of interior monitoring device, comprising:
Address acquisition module, for obtaining the IP address of the headend equipment in router；
Comparison module, the IP address of the headend equipment for will acquire are compared with local port mapping information list；
Update module obtains port mapping for sending to the headend equipment being not recorded in local port mapping information list
Infomational message obtains the port mapping information of the headend equipment, is recorded in port mapping information list；
Sending module, for receiving router outside rear end management equipment obtain port mapping information list message, return note
Rear end management equipment is given in the port mapping information list of record.
7. automatically accessing the device of monitoring device in NAT as claimed in claim 6, which is characterized in that the address obtains mould
Block executes following steps when obtaining the IP address of the headend equipment in NAT:
Sending Receive message router to router is the dhcp address pool that headend equipment distributes, and the dhcp address pool includes road
It is the IP address of headend equipment distribution by device.
8. automatically accessing the device of monitoring device in NAT as claimed in claim 6, which is characterized in that the address obtains mould
Block executes following steps when obtaining the IP address of the headend equipment in NAT:
Probe messages are sent, the IP address of the headend equipment in router is obtained.
9. automatically accessing the device of monitoring device in NAT as claimed in claim 6, which is characterized in that the update module, also
For to being recorded in local port mapping information list, but the headend equipment for the IP address having not been obtained sends confirmation report
Text deletes corresponding port in local port mapping information list if not receiving response message within the preset time
Map information.
10. automatically accessing the device of monitoring device in NAT as claimed in claim 6, which is characterized in that the address obtains mould
Block is when obtaining the IP address of the headend equipment in router, according further to the period of setting, periodically obtains the front end in router
The IP address of equipment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111327716A (en) * | 2019-08-28 | 2020-06-23 | 杭州海康威视系统技术有限公司 | Service interaction method and device |
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