CN108040137A - A kind of domain name analytic method, gateway and network system - Google Patents
A kind of domain name analytic method, gateway and network system Download PDFInfo
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- CN108040137A CN108040137A CN201810096783.6A CN201810096783A CN108040137A CN 108040137 A CN108040137 A CN 108040137A CN 201810096783 A CN201810096783 A CN 201810096783A CN 108040137 A CN108040137 A CN 108040137A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000013481 data capture Methods 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 19
- 238000013507 mapping Methods 0.000 claims description 16
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
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Classifications
-
- 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
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
Abstract
The embodiment provides a kind of domain name analytic method, gateway and network system, it is related to field of communication technology, solve as nonbusiness network users access enterprise networks user, if still traditionally realize dynamic territory analyzing, when the second user in non-local net inquires about the domain name of the first user, although DDNS services can return to the first user and correspond to public network IP address, but since the public network IP address corresponds to multiple LAN subscribers in LAN, therefore second user can not have access to the first user, lead to not realize global route so that nonbusiness's network users can not have access to intranet user.This method includes, and the first user for intercepting and capturing non-local net accesses the data packet of the corresponding domain name of second user in LAN；According to public network IP address and port numbers, the corresponding LAN IP address of second user is determined；Access path with the first user is established according to LAN IP address.The embodiment of the present invention is used to provide a kind of domain name analytic method.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of domain name analytic method, gateway and network system.
Background technology
Dynamic domain name server (English full name：Dynamic Domain Name System, referred to as：DDNS) being can be with
Agreement (the English full name that will be interconnected between fixed internet domain name and dynamic network：Internet Protocol, referred to as：
IP) address corresponds to the service of (parsing) in real time.Relative to traditional static name system (English full name：Domain Name
System, referred to as：DNS for), it can be by a fixed domain name mapping to a dynamic IP address, briefly, no
When effective family surfs the Internet, surfs the Internet in which way, obtaining whether what kind of IP address, IP address can change, Dou Nengbao
Demonstrate,prove the computer for passing through a fixed domain name with regard to user can be had access to.
With the fast development of internet, IP address has been increasingly becoming scarce resource.It is following in Internet protocol the 6th edition
(English full name：Internet Protocol Version 6, referred to as：IPv6 before) making the overall arrangement for and apply, telecom operators
IP address distribution it is main use Dynamic Assignment, i.e. the reach the standard grade IP address of acquisition of user is not fixed, but by runing
Business dynamically distributes to user according to IP address resource situation and uses.
Usually under Intranet, enterprise gateway passes through PPP(Point to Point Protocol) (the English full name based on Ethernet：
Point to Point Protocol over Ethernet, referred to as：PPPoE Internet protocol (the English) or, based on Ethernet
Literary full name：IP over Ethernet, referred to as：IPoE) mode makes inside operator's dynamic access public network IP address, enterprise network
With LAN IP address, enterprise gateway on-premise network port address conversion (English full name：Network Address Port
Translation, referred to as：NAPT), intranet user can only obtain LAN IP address；Therefore when nonbusiness's network users access
During intranet user, if still traditionally realizing dynamic territory analyzing, when the second user inquiry first in non-local net
During the domain name of user, although DDNS services can return to the first user and correspond to public network IP address, due to the public network IP address pair
Multiple LAN subscribers in LAN are answered, therefore second user can not have access to the first user.
It can be seen from the above, in the prior art as nonbusiness network users access enterprise networks user, if still traditionally
Dynamic territory analyzing is realized, when the second user in non-local net inquires about the domain name of the first user, although DDNS services can
Return to the first user and correspond to public network IP address, but since the public network IP address corresponds to multiple LAN subscribers in LAN,
Second user can not have access to the first user, lead to not realize global route so that nonbusiness's network users can not have access to
Intranet user.
The content of the invention
The embodiment of the present invention provides a kind of domain name analytic method, gateway and network system, solves when nonbusiness's net is used
During the access enterprise networks user of family, if still traditionally realizing dynamic territory analyzing, when the second user in non-local net is looked into
When asking the domain name of the first user, although DDNS services can return to the first user and correspond to public network IP address, due to the public network IP
Address corresponds to multiple LAN subscribers in LAN, therefore second user can not have access to the first user, leads to not realize complete
Office's route is so that the problem of nonbusiness's network users can not have access to intranet user.
To reach above-mentioned purpose, the embodiment of the present invention adopts the following technical scheme that：
First aspect, the embodiment of the present invention provide a kind of domain name analytic method, including：Intercept and capture non-local net first is used
Family accesses the data packet of the corresponding domain name of second user in LAN；Wherein, data packet includes：First user services to DDNS
When device request accesses domain name, the corresponding public network IP address of domain name and port numbers that DDNS server returns；According to public network IP address
And port numbers, determine the corresponding LAN IP address of second user；Access with the first user is established according to LAN IP address
Passage.
Optionally, the first user for intercepting and capturing non-local net accesses the data packet of the corresponding domain name of second user in LAN
Before, further include：Obtain the parameter for the LAN that NAPT equipment determines；Wherein, parameter includes：The configuration of at least one second user
Information, network configuration information include：The corresponding public network IP address of second user, port numbers and LAN IP address；Obtain extremely
The network information of a few second user, the network information include：The corresponding domain name of second user；At least one second will be included to use
The corresponding domain name in family, public network IP address, the message of port numbers are sent to DDNS server；Wherein, message is used to indicate that DDNS takes
The corresponding domain name of at least one second user of device storage of being engaged in, public network IP address, port numbers, are used when definite first user accesses second
During the corresponding domain name in family, the corresponding public network IP address of feedback domain name and port numbers to the first user.
Optionally, this method further includes：According to the parameter of LAN, the configuration information of at least one second user is generated
Mapping table；According to public network IP address and port numbers, the corresponding LAN IP address of second user is determined, including：According to public affairs
Net IP address and port numbers inquiry mapping table, determine the corresponding LAN IP address of second user.
Optionally, according to public network IP address and port numbers, the corresponding LAN IP address of second user is determined, including：Root
According to public network IP address and port numbers generation inquiry instruction and send to NAPT equipment, wherein inquiry instruction is for indicating NAPT equipment
Feed back public network IP address and the corresponding LAN IP address of port numbers；Receive the LAN IP address of NAPT equipment feedback.
Second aspect, the embodiment of the present invention provide a kind of gateway, including：Data capture unit, for intercepting and capturing non-local
First user of net accesses the data packet of the corresponding domain name of second user in LAN；Wherein, data packet includes：First user
When asking to access domain name to DDNS server, the corresponding public network IP address of domain name and port numbers that DDNS server returns；Data
Processing unit, for the public network IP address and port numbers obtained according to data capture unit, determines the corresponding local of second user
Net IP address；Data communication units, the LAN IP address for being determined according to data processing unit are established with the first user's
Access path.
Optionally, data capture unit, is additionally operable to obtain the parameter for the LAN that NAPT equipment determines；Wherein, parameter bag
Include：The configuration information of at least one second user, network configuration information include：The corresponding public network IP address of second user, port
Number and LAN IP address；Data capture unit, is additionally operable to obtain the network information of at least one second user, the network information
Including：The corresponding domain name of second user；Data processing unit, is additionally operable at least one will obtained comprising data capture unit
The corresponding domain name of two users, public network IP address, the message of port numbers are sent to DDNS server；Wherein, message is used to indicate
DDNS server stores the corresponding domain name of at least one second user, public network IP address, port numbers, when definite first user accesses
During the corresponding domain name of second user, the corresponding public network IP address of feedback domain name and port numbers to the first user.
Optionally, data processing unit, is additionally operable to the parameter of LAN obtained according to data capture unit, generation is at least
The mapping table of the configuration information of one second user；Data processing unit, specifically for being obtained according to data capture unit
Public network IP address and port numbers inquiry mapping table, determine the corresponding LAN IP address of second user.
Optionally, data processing unit, specifically for the public network IP address and port numbers obtained according to data capture unit
Generate inquiry instruction and send to NAPT equipment, wherein inquiry instruction and be used to indicate NAPT equipment feedback public network IP address and port
Number corresponding LAN IP address；Data capture unit, is additionally operable to receive the LAN IP address of NAPT equipment feedback.
The third aspect, the embodiment of the present invention provide a kind of network system, including：NAPT equipment, DDNS server and enterprise
Industry gateway；Wherein, enterprise gateway includes any one gateway provided such as second aspect.
Domain name analytic method, gateway and network system provided in an embodiment of the present invention, unlike working as non-local in the prior art
When second user in net accesses domain name, DDNS services can only inquire the public network IP address of the first user, due to a public network
IP address corresponds to multiple mutually different LAN IP address in LAN, therefore second user can not have access to the first user；
And the domain name analytic method that the embodiment of the present invention provides, the first user by intercepting and capturing non-local net access the in LAN
The data packet of the corresponding domain name of two users；Wherein, data packet includes：When first user is to DDNS server request access domain name,
The corresponding public network IP address of domain name and port numbers that DDNS server determines；So as to according to public network IP address and port numbers,
Determine the corresponding LAN IP address of second user；And the access path with the first user is established according to LAN IP address；By
In in LAN, LAN IP address with second user be it is corresponding, therefore the first user can according to public network IP address and
Port numbers access the second user in local；Solve in the prior art as nonbusiness network users access enterprise networks user,
DDNS server is only able to find the public network IP address of the corresponding intranet user, since the mapping of multiple LAN IP address is same
Public network IP address, leads to not realize global route so that nonbusiness's network users can not have access to asking for intranet user
Topic.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 provides a kind of flow diagram of domain name analytic method for the embodiment of the present invention；
Fig. 2 provides a kind of another flow diagram of domain name analytic method for the embodiment of the present invention；
Fig. 3 provides a kind of another flow diagram of domain name analytic method for the embodiment of the present invention；
Fig. 4 provides a kind of another flow diagram of domain name analytic method for the embodiment of the present invention；
Fig. 5 provides a kind of structure diagram of gateway for the embodiment of the present invention；
Fig. 6 provides a kind of topological structure schematic diagram of network system for the embodiment of the present invention；
Fig. 7 provides a kind of operation logic flow diagram of network system for the embodiment of the present invention；
Fig. 8 provides a kind of another operation logic flow diagram of network system for the embodiment of the present invention.
Reference numeral：
Gateway -10；
Data capture unit -101；Data processing unit -102；Data communication units -103.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Embodiment one, the embodiment of the present invention provide a kind of domain name analytic method, include as shown in Figure 1：
S101, the first user of intercepting and capturing non-local net access the data packet of the corresponding domain name of second user in LAN；
Wherein, data packet includes：When first user is to DDNS server request access domain name, the domain name that DDNS server returns is corresponding
Public network IP address and port numbers.
It should be noted that in actual application, when the first user accesses the domain name of second user application or announcement
When, the main body of execution should be that the terminal device of the first user is (whole when i.e. terminal device receives the instruction that the first user provides
End equipment initiates the access request to the corresponding domain name of second user according to the instruction)；Wherein, terminal device includes：Personal electricity
Brain (English full name：Personal computer, referred to as：PC), mobile phone, tablet computer etc. are defeated to computer via communications facility
The equipment for entering program and data or receiving computer output handling result.
Specifically, when receiving the corresponding public network IP address of domain name and port numbers of DDNS server return, first uses
The terminal device at family accesses the corresponding domain name of second user in LAN according to the public network IP address and port numbers, accesses data
The step of step S101- step S103 being performed after bag arrival enterprise gateway.
S102, according to public network IP address and port numbers, determine the corresponding LAN IP address of second user.
S103, the access path according to LAN IP address foundation and the first user.
It should be noted that in actual application, when after step S102 and step S103, it is necessary to number by intercepting and capturing
Corresponding LAN IP address is forwarded to according to bag, so as to complete data transfer.
Optionally, the embodiment of the present invention as shown in Figure 2, which provides, intercepts and captures the of non-local net in a kind of domain name analytic method
Before one user accesses the data packet of the corresponding domain name of second user in LAN, further include：Obtain network port address conversion
(English full name：Network Address Port Translation, referred to as：NAPT) the parameter for the LAN that equipment determines；
Wherein, parameter includes：The configuration information of at least one second user, network configuration information include：The corresponding public network of second user
IP address, port numbers and LAN IP address；The network information of at least one second user is obtained, the network information includes：The
The corresponding domain name of two users；It will be sent comprising the message of the corresponding domain name of at least one second user, public network IP address, port numbers
To DDNS server；Wherein, message is used to indicate that DDNS server stores the corresponding domain name of at least one second user, public network IP
Address, port numbers, when definite first user accesses the corresponding domain name of second user, the corresponding public network IP address of feedback domain name and
Port numbers are to the first user.
It should be noted that in actual application, the parameter for the LAN that NAPT equipment determines, Ke Yitong are obtained
The parameter that inquiry NAPT equipment presets the LAN of storage is crossed, so as to get the parameter of the local；Can also be NAPT equipment
The parameter of the corresponding LAN is got by other means, and details are not described herein again；Specifically, each LAN corresponds to a public affairs
Net IP address, a public network IP address correspond to multiple LAN IP address and multiple port numbers, and each LAN IP address corresponds to
A port number, each second user correspond to a domain name.
Public network IP address, port numbers and the LAN IP address fed back according to NAPT equipment generates at least one DDNS and uses
The mapping table at family
Optionally, the embodiment of the present invention as shown in Figure 3 provides a kind of domain name analytic method and further includes：According to LAN
Parameter, generates the mapping table of the configuration information of at least one second user；According to public network IP address and port numbers, is determined
The corresponding LAN IP address of two users, including：According to public network IP address and port numbers inquiry mapping table, the second use is determined
The corresponding LAN IP address in family.
Table 1
It should be noted that in actual application, mapping relations tableau format is as shown in table 1.
Optionally, the embodiment of the present invention as shown in Figure 4 provide in a kind of domain name analytic method according to public network IP address and
Port numbers, determine the corresponding LAN IP address of second user, including：According to public network IP address and port numbers generation inquiry instruction
And send to NAPT equipment, wherein inquiry instruction and be used to indicate NAPT equipment feedback public network IP address and the corresponding local of port numbers
Net IP address；Receive the LAN IP address of NAPT equipment feedback.
It should be noted that in actual application NAPT equipment mainly by multiple home addresses be mapped as one it is legal
Public network address, but it is corresponding with different protocol ports number and different home addresses；Therefore, NAPT equipment can be according to public network
IP address and port numbers inquire about corresponding LAN IP address.
Domain name analytic method provided in an embodiment of the present invention, unlike in the prior art when the second user in non-local net is visited
When asking domain name, DDNS services can only inquire the public network IP address of the first user, since a public network IP address corresponds to LAN
Interior multiple mutually different LAN IP address, therefore second user can not have access to the first user；And the embodiment of the present invention
The domain name analytic method of offer, the first user by intercepting and capturing non-local net access the corresponding domain name of second user in LAN
Data packet；Wherein, data packet includes：When first user is to DDNS server request access domain name, what DDNS server determined
The corresponding public network IP address of domain name and port numbers；So as to according to public network IP address and port numbers, determine that second user corresponds to
LAN IP address；And the access path with the first user is established according to LAN IP address；Due in LAN, local
Net IP address is corresponding with second user, therefore the first user can be accessed in local according to public network IP address and port numbers
Second user；Solve in the prior art as nonbusiness network users access enterprise networks user, DDNS server is only able to find
The public network IP address of the corresponding intranet user, since multiple LAN IP address map same public network IP address, causes nothing
Method realizes global route so that the problem of nonbusiness's network users can not have access to intranet user.
Embodiment two, the embodiment of the present invention provide a kind of gateway 10, include as shown in Figure 5：
Data capture unit 101, the second user that the first user for intercepting and capturing non-local net is accessed in LAN correspond to
Domain name data packet；Wherein, data packet includes：When first user is to DDNS server request access domain name, DDNS server
The corresponding public network IP address of domain name and port numbers of return.
Data processing unit 102, for the public network IP address and port numbers obtained according to data capture unit 101, determines
The corresponding LAN IP address of second user.
Data communication units 103, the LAN IP address for being determined according to data processing unit 102 is established to be used with first
The access path at family.
Optionally, data capture unit 101, are additionally operable to obtain the parameter for the LAN that NAPT equipment determines；Wherein, parameter
Including：The configuration information of at least one second user, network configuration information include：The corresponding public network IP address of second user, end
Slogan and LAN IP address；Data capture unit 101, is additionally operable to obtain the network information of at least one second user, net
Network information includes：The corresponding domain name of second user；Data processing unit 102, is additionally operable to obtain comprising data capture unit 101
The corresponding domain name of at least one second user, public network IP address, the message of port numbers sent to DDNS server；Wherein, disappear
Breath is used to indicate that DDNS server stores the corresponding domain name of at least one second user, public network IP address, port numbers, when determining the
When one user accesses second user corresponding domain name, the corresponding public network IP address of feedback domain name and port numbers to the first user.
It should be noted that multiple users can be included in LAN in actual application, and domain name, the public affairs of each user
Net IP address, port numbers and LAN IP address are all fixed；It is exemplary, with included in LAN Zhang San, Li Si with
And illustrated exemplified by 53 second users of king, concrete implementation mode is as follows：
The parameter for the LAN that NAPT equipment determines is obtained, including：Zhang San, public network IP address：183.199.1.33, port
Number：8081, LAN IP address：192.168.1.1；Li Si, public network IP address：183.199.1.33, port numbers：8082, office
Domain net IP address：192.168.1.2；King five, public network IP address：183.199.1.33, port numbers：8083, LAN IP address：
192.168.1.3。
The network information of at least one second user is obtained, including：Zhang San, domain name：zhangsan.com；Li Si, domain name：
lisi.com；King five, domain name：wangwu.com.
Message comprising the corresponding domain name of at least one second user, public network IP address, port numbers is sent to DDNS clothes
Business device, including：
" Zhang San, domain name will be included：Zhangsan.com, public network IP address：183.199.1.33, port numbers：8081；Lee
Four, domain name：Lisi.com, public network IP address：183.199.1.33, port numbers：8082；King five, domain name：Wangwu.com, it is public
Net IP address：183.199.1.33, port numbers：8083 " message is sent to DDNS server；Therefore, DDNS server can
To know when the first user accesses Zhang San, the first user can ask to access the domain of zhangsan.com first to DDNS server
Name；When DDNS services receive the request of the entitled zhangsan.com of request access domain of the first user transmission, it is by domain name
Corresponding " the public network IP address of zhangsan.com：And port numbers 183.199.1.33：8081 " feed back to first user；Cause
This, the first user is according to " public network IP address：And port numbers 183.199.1.33：8081 " access corresponding gateway, gateway root
According to " public network IP address：And port numbers 183.199.1.33：8081 " determine " LAN IP address of corresponding Zhang San：
192.168.1.1 ", and according to the " LAN IP address of Zhang San：192.168.1.1 " establish and the access of first user is led to
Road.
Optionally, data processing unit 102, are additionally operable to the parameter of LAN obtained according to data capture unit 101, raw
Into the mapping table of the configuration information of at least one second user；Data processing unit 102, specifically for according to data acquisition
Public network IP address and port numbers the inquiry mapping table that unit 101 obtains, determine the corresponding LAN IP address of second user.
Optionally, data processing unit 102, specifically for the public network IP address that is obtained according to data capture unit 101 and
Port numbers, which generate inquiry instruction and send to NAPT equipment, wherein inquiry instruction, to be used to indicate that NAPT equipment feeds back public network IP address
LAN IP address corresponding with port numbers；Data capture unit 101, with being additionally operable to receive the LAN IP of NAPT equipment feedback
Location.
Gateway provided in an embodiment of the present invention, unlike in the prior art when the second user in non-local net accesses domain name
When, DDNS services can only inquire the public network IP address of the first user, due to a public network IP address correspond to it is multiple in LAN
Mutually different LAN IP address, therefore second user can not have access to the first user；And what the embodiment of the present invention provided
Domain name analytic method, the first user by intercepting and capturing non-local net access the data of the corresponding domain name of second user in LAN
Bag；Wherein, data packet includes：First user to DDNS server ask to access domain name when, domain name pair that DDNS server determines
The public network IP address and port numbers answered；So as to according to public network IP address and port numbers, determine the corresponding local of second user
Net IP address；And the access path with the first user is established according to LAN IP address；Due in LAN, LAN IP
Location is corresponding with second user, therefore the first user can access second in local according to public network IP address and port numbers
User；Solve in the prior art as nonbusiness network users access enterprise networks user, DDNS server is only able to find corresponding be somebody's turn to do
The public network IP address of intranet user, since multiple LAN IP address map same public network IP address, leads to not realize
Overall situation route is so that the problem of nonbusiness's network users can not have access to intranet user.
Embodiment three, the embodiment of the present invention provide a kind of network system, include as shown in Figure 6：NAPT equipment, DDNS clothes
Business device and enterprise gateway；Wherein, enterprise gateway includes any one gateway 10 provided such as second aspect.Specific gateway can join
See the associated description in above device embodiment two, details are not described herein again.
It should be noted that in actual application, the Concrete workflow for the network system that the embodiment of the present invention provides
Journey is as shown in Figure 7 and Figure 8；Wherein DDNS user represents the first user, and other users represent second user.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
- A kind of 1. domain name analytic method, it is characterised in that including：Intercept and capture non-local net the first user access in LAN the The data packet of the corresponding domain name of two users；Wherein, the data packet includes：First user asks to access to DDNS server During domain name, the corresponding public network IP address of domain name and port numbers that the DDNS server returns；According to the public network IP address and the port numbers, the corresponding LAN IP address of the second user is determined；Access path with first user is established according to the LAN IP address.
- 2. domain name analytic method according to claim 1, it is characterised in that first user for intercepting and capturing non-local net visits Before the data packet for asking the corresponding domain name of second user in LAN, further include：Obtain the parameter for the LAN that NAPT equipment determines；Wherein, the parameter includes：At least one second user is matched somebody with somebody Confidence ceases, and the network configuration information includes：The second user corresponding public network IP address, port numbers and LAN IP Location；The network information of at least one second user is obtained, the network information includes：The corresponding domain name of the second user；Message comprising the corresponding domain name of at least one second user, public network IP address, port numbers is sent to DDNS clothes Business device；Wherein, the message is used to indicate that the DDNS server stores the corresponding domain name of at least one second user, public network IP Address, port numbers, when the corresponding domain name of definite first user access second user, the corresponding public network IP of feedback domain name Location and port numbers are to first user.
- 3. domain name analytic method according to claim 2, it is characterised in that the method further includes：According to the local The parameter of net, generates the mapping table of the configuration information of at least one second user；It is described that the corresponding LAN IP address of the second user is determined according to the public network IP address and the port numbers, wrap Include：The mapping table is inquired about according to the public network IP address and the port numbers, determines the corresponding office of the second user Domain net IP address.
- 4. domain name analytic method according to claim 1, it is characterised in that described according to the public network IP address and described Port numbers, determine the corresponding LAN IP address of the second user, including：According to the public network IP address and port numbers generation inquiry instruction and send to NAPT equipment, wherein the inquiry refers to Order is used to indicate that the NAPT equipment feeds back the public network IP address and the corresponding LAN IP address of the port numbers；Receive the LAN IP address of the NAPT equipment feedback.
- A kind of 5. gateway, it is characterised in that including：Data capture unit, the first user for intercepting and capturing non-local net access the corresponding domain name of second user in LAN Data packet；Wherein, the data packet includes：It is described when first user is to DDNS server request access domain name The corresponding public network IP address of domain name and port numbers that DDNS server returns；Data processing unit, for the public network IP address obtained according to the data capture unit and the port numbers, really Determine the corresponding LAN IP address of the second user；Data communication units, the LAN IP address for being determined according to the data processing unit are established and described first The access path of user.
- 6. gateway according to claim 5, it is characterised in that the data capture unit, is additionally operable to obtain NAPT equipment The parameter of the definite LAN；Wherein, the parameter includes：The configuration information of at least one second user, the network Configuration information includes：The second user corresponding public network IP address, port numbers and LAN IP address；The data capture unit, is additionally operable to obtain the network information of at least one second user, and the network information includes：Institute State the corresponding domain name of second user；The data processing unit, is additionally operable at least one second user pair that will be obtained comprising the data capture unit Domain name, public network IP address, the message of port numbers answered are sent to the DDNS server；Wherein, the message is used to indicate institute State DDNS server and store the corresponding domain name of at least one second user, public network IP address, port numbers, when definite first user visits When asking the corresponding domain name of second user, the corresponding public network IP address of feedback domain name and port numbers to first user.
- 7. gateway according to claim 6, it is characterised in that the data processing unit, is additionally operable to according to the data The parameter for the LAN that acquiring unit obtains, generates the mapping table of the configuration information of at least one second user；The data processing unit, specifically for the public network IP address obtained according to the data capture unit and the end Slogan inquires about the mapping table, determines the corresponding LAN IP address of the second user.
- 8. gateway according to claim 5, it is characterised in that the data processing unit, specifically for according to the number The public network IP address obtained according to acquiring unit and port numbers generation inquiry instruction are simultaneously sent to NAPT equipment, wherein institute Inquiry instruction is stated to be used to indicate the NAPT equipment with feeding back the public network IP address and the corresponding LAN IP of the port numbers Location；The data capture unit, is additionally operable to receive the LAN IP address of the NAPT equipment feedback.
- A kind of 9. network system, it is characterised in that including：NAPT equipment, DDNS server and enterprise gateway；Wherein, the enterprise Industry gateway includes such as claim 5-8 any one of them gateways.
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| CN201810096783.6A CN108040137A (en) | 2018-01-31 | 2018-01-31 | A kind of domain name analytic method, gateway and network system |
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