CN105338128B - Domain name analytic method and domain name mapping device - Google Patents

Domain name analytic method and domain name mapping device Download PDF

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Publication number
CN105338128B
CN105338128B CN201510622854.8A CN201510622854A CN105338128B CN 105338128 B CN105338128 B CN 105338128B CN 201510622854 A CN201510622854 A CN 201510622854A CN 105338128 B CN105338128 B CN 105338128B
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China
Prior art keywords
domain name
server
address information
destination address
destination
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CN201510622854.8A
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Chinese (zh)
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CN105338128A (en
Inventor
陈政璋
吴琦
毛伟
邢志杰
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互联网域名系统北京市工程研究中心有限公司
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Priority to CN201510622854.8A priority Critical patent/CN105338128B/en
Publication of CN105338128A publication Critical patent/CN105338128A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/10Mapping of addresses of different types; Address resolution
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/15Directories; Name-to-address mapping
    • H04L61/1505Directories; Name-to-address mapping involving standard directories or standard directory access protocols
    • H04L61/1511Directories; Name-to-address mapping involving standard directories or standard directory access protocols using domain name system [DNS]

Abstract

A kind of domain name analytic method of present invention offer and domain name mapping device.The first analysis request that recursion server is sent is received by transfer domain name system DNS server, includes domain name and the first destination address information in the first analysis request, the first destination address information includes the network protocol IP address and the first destination interface of the first mesh;Transfer DNS, by the information that the first destination address information update is the second mesh, generates the second analysis request according to the first relation table, and the second destination address information includes the second purpose IP address and the second destination interface;The server that second analysis request is sent to the corresponding parsing domain name of the second destination address information by transfer DNS parses;Transfer DNS receives the response message of the server feedback of parsing domain name, includes the corresponding IP address of domain name in response message;Response message is sent to recursion server by transfer DNS.The present invention can mitigate the workload of recursion server and authoritative server, improve domain name mapping performance.

Description

Domain name analytic method and domain name mapping device

Technical field

The present invention relates to computer technology more particularly to a kind of domain name analytic methods and domain name mapping device.

Background technology

In order to facilitate memory, generally use domain name replaces procotol (Internet Protocol;Referred to as:IP) Location identifies site address, and when client needs to access network, inputs domain name in a browser, the domain name is by parsing Afterwards, client just realizes the access to the server corresponding to the IP address.

In the prior art, the process of domain name mapping is as follows:The initiation of client includes the request bag of domain name to be resolved, such as There is no the corresponding IP address of the domain name, client can be to local domain name system (Domain Name System in fruit client cache; Referred to as:DNS) server initiates DNS query request, if local dns server still without the corresponding IP address of the domain name, Local dns server can initiate recursive query request to recursion server, and recursion server is after being connected to recursive query request, meeting The content whether inquired in the caching of oneself checked, if so, then directly in response to local dns server, if not having in caching, Inquiry request then is initiated from recursion server to root server, root server sends the corresponding authority of the domain name to recursion server The address of server after recursion server receives the address of the authoritative server, can initiate inquiry to the authoritative server and ask It asks, until authoritative server returns to the corresponding IP address of the domain name to recursion server, recursion server feeds back the IP address To client, the process of a domain name mapping is completed.

But in above-mentioned domain name resolution process, the query flows of recursion server and DNS authority server are larger, work Make heavier loads, therefore greatly influences the performance of domain name mapping.

Invention content

A kind of domain name analytic method of present invention offer and domain name mapping device, to improve the performance of domain name mapping.

The present invention provides a kind of domain name analytic method, including:

Transfer domain name system DNS server receives the first analysis request that recursion server is sent, and first parsing is asked Include domain name and the first destination address information in asking, the first destination address information includes the procotol IP of the first mesh Location and the first destination interface;

The first destination address information update is the letter of the second mesh according to the first relation table by the transfer dns server Breath generates the second analysis request, wherein includes domain name and the service for parsing domain name in first mapping table The correspondence of second destination address information of device, the second destination address information include the second purpose IP address and the second mesh Port;

Second analysis request is sent to the corresponding solution of the second destination address information by the transfer dns server The server of analysis domain name is parsed;

The transfer dns server receives the response message of the server feedback of the parsing domain name, the response It include the corresponding IP address of domain name in message;

The response message is sent to the recursion server by the transfer dns server.

Further, the server of the parsing domain name is deployed in the transfer dns server in one, described Second purpose IP address is identical as first purpose IP address, and second destination interface is the clothes of the parsing domain name The receiving port of business device.

Further, second analysis request is sent to second destination address and believed by the transfer dns server Cease it is corresponding parsing domain name server parsed before, further include:

Determine that the second destination interface state in the second destination address information is normal.

Further, the server of the parsing domain name is independently disposed with transfer dns server deployment When, second purpose IP address is the IP address of the server of the parsing domain name, and second destination interface is institute State the receiving port of the server of parsing domain name.

Further, the server of the parsing domain name is authoritative server.

Further, include also third destination address information in the response message, in the third destination address information Including third purpose IP address and third destination interface;

The response message is sent to the recursion server by the transfer dns server, including:

Third destination address information update in the response message is the 4th destination address by the transfer dns server Information includes the 4th purpose IP address and the 4th destination interface in the 4th destination address information;

4th purpose IP address is the IP address of the recursion server, and the 4th destination interface is the recurrence The receiving port of server.

Further, the server of the parsing domain name includes the second mapping table, second correspondence Include the correspondence of domain name and IP address in table.

The present invention also provides a kind of domain name mapping device, domain name resolver is deployed in transfer dns server, packet It includes:

Receiving module, the first analysis request for receiving recursion server transmission include in first analysis request Domain name and the first destination address information, the first destination address information include the network protocol IP address and first of the first mesh Destination interface;

Update module, for by the information that the first destination address information update is the second mesh, generating the second parsing and asking It asks, wherein the second destination address information of the server comprising the parsing domain name in first mapping table, institute It includes the second purpose IP address and the second destination interface to state the second destination address information;

Sending module, for second analysis request to be sent to the corresponding parsing institute of the second destination address information The server for stating domain name is parsed;

The receiving module is additionally operable to receive the response message of the server feedback of the parsing domain name, the response It include the corresponding IP address of domain name in message;

The sending module is additionally operable to the response message being sent to the recursion server.

Further, the server of the parsing domain name is deployed in the transfer dns server in one, described Second purpose IP address is identical as first purpose IP address, and second destination interface is the clothes of the parsing domain name The receiving port of business device.

Further, further include determining module, the determining module asks second parsing for the sending module Before asking the server for being sent to the corresponding parsing domain name of the second destination address information to be parsed, described the is determined The second destination interface state in two destination address information is normal.

Domain name analytic method provided by the invention and domain name mapping device, when transfer dns server receives recursion service After the analysis request that device is sent, the shunting of analysis request can be carried out according to domain name included in the analysis request, reduces and passs Return the inquiry times of server and the parsing number of authoritative server, is effectively improved the efficiency of domain name mapping.

Description of the drawings

It, below will be to embodiment or the prior art in order to illustrate more clearly of the present invention or technical solution in the prior art Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is the one of the present invention A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these Attached drawing obtains other attached drawings.

Fig. 1 is the flow chart of domain name analytic method embodiment one of the present invention;

Fig. 2 is the structural schematic diagram of the embodiment one of the domain name mapping device of the present invention.

Specific implementation mode

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art The every other embodiment obtained under the premise of not making the creative labor, shall fall within the protection scope of the present invention.

The technical method that the embodiment of the present invention provides is to take domain name pair when recursion server can not be looked into own cache It is carried out after the IP address answered.When recursion server itself cannot achieve domain name mapping, recursion server can will be to the present invention Transfer dns server sends analysis request.

Fig. 1 is the flow chart of domain name analytic method embodiment one of the present invention.As shown in Figure 1, domain name provided in this embodiment Analytic method includes:

S101:Transfer domain name system DNS server receives the first analysis request that recursion server is sent, and the first parsing is asked Include domain name and the first destination address information in asking.

Wherein, the first destination address information includes the network protocol IP address and the first destination interface of the first mesh.

Wherein, the first destination address information is particularly as the address information for being transfer dns server, therefore, the first destination IP Address is the IP address of transfer dns server, and the first destination interface is the receiving port of transfer dns server, the receiving port For receiving the first analysis request transmitted by recursion server.Meanwhile in first analysis request can also include source address And source port, source address are exactly the IP address of recursion server, source port is exactly that recursion server sends the first analysis request Sending port.

S102:First destination address information update is the information of the second mesh according to the first relation table by transfer dns server, Generate the second analysis request.

Wherein, pair comprising domain name with the second destination address information of the server for parsing domain name in the first mapping table It should be related to, the second destination address information includes the second purpose IP address and the second destination interface.

Specifically, after transfer dns server receives the first analysis request, which can be updated And it repacks, it is made to generate the second analysis request.Wherein, it is according to that transfer dns server, which is with the first relation table, One analysis request is updated.In the first relation table, describes domain name and the resolution server address for parsing the domain name is provided The correspondence of information, and the resolution server address information for parsing the domain name is exactly the second destination address information, that is to say, that Second destination address information is to finally provide the address information of the resolution server of parsing domain name, which can So that transfer dns server is self-built, can also be what other server was established, but transfer dns server can be used and is somebody's turn to do First relation table.Transfer dns server is matched according to the domain name in first the first analysis request of relation table pair, is eventually obtained The the second destination address information for being capable of providing the resolution server for parsing the domain name is taken, and is by the first destination address information update Second destination address information generates the second analysis request.Wherein, the second address information specifically includes the second purpose IP address and Two destination interfaces, the second purpose IP address are to parse the IP address of the domain name service of the domain name, and the second destination interface is just It is the port that the resolution server receives the domain name and parsed for it.

It is noted herein that during above-mentioned newer, do not need to by the first destination address information deletion, more It can be newly the process that the second analysis request is generated in outer layer the second destination address information of addition of the first destination address information. Likewise, all renewal processes in the present invention need not all delete information before, and only to information before Repacking.

S103:Second analysis request is sent to the corresponding parsing domain name of the second destination address information by transfer dns server Server parsed.

Specifically, after generating the second analysis request, transfer dns server will carry domain name according to the second destination address information The second analysis request be sent to the corresponding server of the second destination address information and parsed, which has multiple ends Mouthful, the second destination interface that the second analysis request is carried from the second destination address information enters resolution server and is parsed.

S104:Transfer dns server receives the response message of the server feedback of parsing domain name, includes domain in response message The corresponding IP address of name.

After the corresponding resolution server of second destination address completes domain name mapping, the corresponding IP address of domain name can be packaged into In response message, then issue transfer dns server, thus it is conceivable that the response message also carry destination IP and Destination interface, the destination IP and destination interface are the IP address of transfer dns server and for receiving analysis service respectively The receiving port of device response message.

S105:Response message is sent to recursion server by transfer dns server.

The receiving port of the IP address of recursion server and recursion server is packaged into the sound by transfer dns server again It answers in message, is sent to recursion server.The IP address of the response message can be fed back to client by recursion server.

Domain name analytic method provided in this embodiment, transfer dns server recursion server is sent according to domain name One analysis request is shunted, which is sent directly to be capable of providing at the resolution server of analysis service, therefore Reduce the inquiry times of recursion server, and decrease the parsing number of authoritative server, is effectively improved domain name The efficiency of parsing.

In another embodiment, on the basis of the above embodiment 1, server and the transfer of domain name are parsed Dns server is deployed in one, and the second purpose IP address is identical as the first purpose IP address, and the second destination interface is parsing domain The receiving port of the server of name.

Specifically, in the present embodiment, the resolution server of the corresponding parsing domain name of the second destination address information can be It is deployed in transfer dns server, that is to say, that transfer dns server is inherently capable of providing the domain name resolution service.This When in the first relation table, during the second purpose IP address in the second destination address information corresponding to domain name to be resolved is exactly Turn the IP address of dns server, i.e. the first purpose IP address, in the second destination address information corresponding to domain name to be resolved Second destination interface is exactly the receiving port of the domain name resolution server.

When for the above situation, transfer dns server, can be with when receiving the first analysis request and being updated to it Only the first destination interface is updated, so that it becomes the receiving port of the server of parsing domain name;It can also be to the first purpose Address and the first destination interface are carried out at the same time update, the second destination address after being simply updated and the first destination before update Location is identical, and updated second destination interface is the receiving port for the server for parsing domain name.

Optionally, after generating the second analysis request, the second analysis request is sent to the second mesh by transfer dns server Address information it is corresponding parsing domain name server parsed before, further include:

Determine that the second destination interface state in the second destination address information is normal.

The server of the corresponding parsing domain name of second destination address information has multiple parsing ports, one of them is principal solution Port is analysed, i.e., the second destination interface described in relation table, remaining is then backup fracture.And in the second destination address information General only to provide the second destination interface parsed comprising one, the second port breaks down and cannot complete to parse in order to prevent Task, transfer dns server send the second analysis request before, it is also necessary to determine second destination interface working condition whether Normally, if normally, continuing to send the second analysis request to second destination interface;It, can be by the second solution if abnormal Analysis request is sent to any one backup port in addition to the port.It is envisioned that backup fracture may also will appear event Barrier, therefore these backup ports, according to the distribution of specified sequence, transfer dns server can be according to this sequentially by the second analysis request It is sent to backup port, is parsed until encountering a good port of working condition.

Whether transfer dns server can detect the second destination interface in normal work with certain frequency.For example, transfer Whether dns server can judge the second destination interface in normal work, probe message by way of sending probe message In can include detection domain name.If the second destination interface can normally receive probe message and parse probe message, then will If detection domain name correctly feeds back to transfer dns server, then it is assumed that the second destination interface works normally, otherwise it is assumed that second Destination interface has been likely to occur failure.Certainly, transfer dns server can also judge that the second destination interface is by other means It is no to be in normal work, it is not limited thereto.

After domain name parses in the resolution server in being deployed in transfer dns server, transfer dns server will The corresponding IP address of the domain name is packaged into response message, is sent directly to recursion server.Therefore, the resolving of the embodiment Only occur between recursion server and transfer dns server, be not directed to recursion server to the inquiry of root server with And the parsing of authoritative server, the load balancing of parsing is effectively realized, analyzing efficiency is improved.

In another embodiment, on the basis of the above embodiment 1, server and the transfer of domain name are parsed When dns server deployment is independently disposed, the second purpose IP address is the IP address for the server for parsing domain name, the second purpose Port is the receiving port for the server for parsing domain name.

Specifically, in the present embodiment, the resolution server of the corresponding parsing domain name of the second destination address information is in Turn what dns server was independently disposed, that is to say, that transfer dns server itself can not parse the domain name, there are other analysis services Device is capable of providing the service for parsing the domain name.At this time in the first relation table, the second destination corresponding to domain name to be resolved The second purpose IP address in the information of location is exactly the IP address for the server for parsing domain name, and second corresponding to domain name to be resolved The second destination interface in destination address information is exactly the receiving port of the domain name resolution server.

When for the above situation, transfer dns server is needed when receiving the first analysis request and being updated to it Update is carried out at the same time to the first destination address and the first destination interface, updated second destination address is the clothes for parsing domain name The IP address of business device, updated second destination interface are the receiving port for the server for parsing domain name.Then, transfer DNS takes Updated second analysis request is sent to according to the second destination address information corresponding to the second destination address information by business device The server that the domain name can be parsed is parsed.

Optionally, above-mentioned since authoritative server itself is independently disposed and is capable of providing parsing function The server for parsing domain name can be authoritative server.

It can be to domain after the server for the parsing domain name independently disposed with transfer dns server receives the second analysis request Name is parsed, then the corresponding IP address of the domain name after parsing is packaged in response message, complete especially by following step At the transmission of response message, i.e., step S104 further includes at this time:

Step 1:Also include third destination address information in response message, includes third purpose in third destination address information IP address and third destination interface.

Complete parse after, response message needs first to be sent to transfer dns server, therefore, with transfer dns server When the server for the parsing domain name independently disposed sends response message, it is also necessary to be packaged the address information of transfer dns server Enter in the response message, the address information of transfer dns server is exactly third destination address information, third destination address letter at this time The IP address of transfer dns server when the third purpose IP address of breath, during the third destination interface of third destination address information is Turn the port that dns server receives phase response message.It is noted herein that independently disposing with transfer dns server After any domain name of server parsing for parsing domain name, all response messages are required for first being sent at transfer dns server, That is third destination address information can only be the address information of transfer dns server.

At this point, step S105 is specifically included:

Step 1:Transfer dns server believes the third destination address information update in response message for the 4th destination address It ceases, includes the 4th purpose IP address and the 4th destination interface in the 4th destination address information;4th purpose IP address takes for recurrence The IP address of business device, the 4th destination interface are the receiving port of recursion server.

When transfer dns server receives the server transmission for the parsing domain name independently disposed with transfer dns server After corresponding message with third destination address information, since the response message finally needs to be sent to recursion server, Transfer dns server needs third destination address information being updated, and is updated to the 4th destination address information, the 4th destination The 4th purpose IP address in the information of location is the IP address of recursion server, the 4th destination interface in the 4th destination address information For the receiving port of recursion server.After update, which can be sent to the 4th destination by transfer dns server At the corresponding recursion server of location information, to complete reception of the recursion server to corresponding message.

Further, the server of parsing domain name in the present invention includes the second mapping table, the second correspondence Include the correspondence of domain name and IP address in table.That is, no matter whether the server of the parsing domain name takes with transfer DNS Business device deployment is integrated, and is all by matching domain name with the second relation table, so that it is determined that going out IP corresponding with domain name Address, and complete parsing.

Fig. 2 is the structural schematic diagram of the embodiment one of the domain name mapping device of the present invention.As shown in Fig. 2, the present embodiment carries The domain name mapping device of confession is deployed in transfer dns server, including:

Receiving module 1, the first analysis request for receiving recursion server transmission include domain name in the first analysis request And the first destination address information.

Wherein, the first destination address information includes the network protocol IP address and the first destination interface of the first mesh;

Update module 2, for by the information that the first destination address information update is the second mesh, generating the second analysis request.

Wherein, the second destination address information of the server comprising parsing domain name in the first mapping table, the second purpose Address information includes the second purpose IP address and the second destination interface;

Sending module 3, the clothes for the second analysis request to be sent to the corresponding parsing domain name of the second destination address information Business device is parsed;

Receiving module 1 is additionally operable to receive the response message of the server feedback of parsing domain name, includes domain name in response message Corresponding IP address;

Sending module 3 is additionally operable to response message being sent to recursion server.

The domain name mapping device of the present embodiment, which can correspond to, executes embodiment of the method shown in Fig. 1.Its realization principle is identical, this Place repeats no more.

On the basis of device embodiment corresponding to Fig. 2, the server and transfer dns server that parse domain name are deployed in In one, the second purpose IP address is identical as the first purpose IP address, and the second destination interface is connecing for the server of parsing domain name Receiving end mouth.

Further, domain name mapping device further includes determining module, and determining module asks the second parsing for sending module Before asking the server for being sent to the corresponding parsing domain name of the second destination address information to be parsed, determine that the second destination address is believed The second destination interface state in breath is normal.

On the basis of device embodiment corresponding to Fig. 2, server and the deployment point of transfer dns server of domain name are parsed Not not independently when deployment, the second purpose IP address is the IP address for the server for parsing domain name, and the second destination interface is parsing domain name Server receiving port.At this point, update module is additionally operable to the third destination address information update in response message be the Four destination address information include the 4th purpose IP address and the 4th destination interface in the 4th destination address information;4th destination IP Address is the IP address of recursion server, and the 4th destination interface is the receiving port of recursion server.

One of ordinary skill in the art will appreciate that:Realize that all or part of step of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer read/write memory medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence;And storage medium above-mentioned includes:ROM, RAM, magnetic disc or The various media that can store program code such as person's CD.

Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that:Its according to So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into Row equivalent replacement;And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims (10)

1. a kind of domain name analytic method, which is characterized in that including:
Transfer domain name system DNS server receives the first analysis request that recursion server is sent, in first analysis request Including domain name and the first destination address information, the first destination address information include the first mesh network protocol IP address and First destination interface;
The first destination address information update is the letter of the second mesh according to the first mapping table by the transfer dns server Breath generates the second analysis request, wherein includes domain name and the service for parsing domain name in first mapping table The correspondence of second destination address information of device, the second destination address information include the second purpose IP address and the second mesh Port;
Second analysis request is sent to the corresponding parsing institute of the second destination address information by the transfer dns server The server for stating domain name is parsed;
The transfer dns server receives the response message of the server feedback of the parsing domain name, the response message In include the corresponding IP address of domain name;
The response message is sent to the recursion server by the transfer dns server.
2. according to the method described in claim 1, it is characterized in that, server and the transfer of the parsing domain name Dns server is deployed in one, and second purpose IP address is identical as first purpose IP address, second purpose Port is the receiving port of the server of the parsing domain name.
3. according to the method described in claim 2, it is characterized in that, the transfer dns server is by second analysis request Be sent to the second destination address information it is corresponding parsing domain name server parsed before, further include:
Determine that the second destination interface state in the second destination address information is normal.
4. according to the method described in claim 1, it is characterized in that, server and the transfer of the parsing domain name When dns server deployment is independently disposed, second purpose IP address is the IP of the server of the parsing domain name Address, second destination interface are the receiving port of the server of the parsing domain name.
5. according to the method described in claim 4, it is characterized in that, the server of the parsing domain name is that authority services Device.
6. according to the method described in claim 5, it is characterized in that,
Also include third destination address information in the response message, includes third destination IP in the third destination address information Address and third destination interface;
The response message is sent to the recursion server by the transfer dns server, including:
The transfer dns server believes the third destination address information update in the response message for the 4th destination address It ceases, includes the 4th purpose IP address and the 4th destination interface in the 4th destination address information;
4th purpose IP address is the IP address of the recursion server, and the 4th destination interface is the recursion service The receiving port of device.
7. according to claim 1~6 any one of them method, which is characterized in that the server packet of the parsing domain name Containing the second mapping table, the correspondence of domain name and IP address is included in second mapping table.
8. a kind of domain name mapping device, domain name resolver are deployed in transfer dns server, which is characterized in that including:
Receiving module, the first analysis request for receiving recursion server transmission include domain name in first analysis request And the first destination address information, the first destination address information include the network protocol IP address and the first purpose of the first mesh Port;
Update module is used for the information by the first destination address information update for the second mesh according to the first mapping table, Generate the second analysis request, wherein include the second of the server for parsing domain name in first mapping table Destination address information, the second destination address information include the second purpose IP address and the second destination interface;
Sending module, for second analysis request to be sent to the corresponding parsing domain of the second destination address information The server of name is parsed;
The receiving module is additionally operable to receive the response message of the server feedback of the parsing domain name, the response message In include the corresponding IP address of domain name;
The sending module is additionally operable to the response message being sent to the recursion server.
9. device according to claim 8, which is characterized in that the server of the parsing domain name and the transfer Dns server is deployed in one, and second purpose IP address is identical as first purpose IP address, second purpose Port is the receiving port of the server of the parsing domain name.
10. device according to claim 9, which is characterized in that further include determining module, the determining module is for described Second analysis request is sent to the service of the corresponding parsing domain name of the second destination address information by sending module Before device is parsed, determine that the second destination interface state in the second destination address information is normal.
CN201510622854.8A 2015-09-25 2015-09-25 Domain name analytic method and domain name mapping device CN105338128B (en)

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CN106453675A (en) * 2016-09-19 2017-02-22 网宿科技股份有限公司 302 jump method, method and system for generating URL, and method and system for resolving domain name resolution request
CN106953945A (en) * 2017-05-26 2017-07-14 北京奇虎科技有限公司 Domain name intelligently parsing method and device, server based on SDN realizations
CN107645573A (en) * 2017-09-29 2018-01-30 中国人民解放军国防科技大学 A kind of method for detecting the forwarding configuration of recurrence name server

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