WO2017198135A1 - 一种用户溯源的方法、装置及系统 - Google Patents

一种用户溯源的方法、装置及系统 Download PDF

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Publication number
WO2017198135A1
WO2017198135A1 PCT/CN2017/084457 CN2017084457W WO2017198135A1 WO 2017198135 A1 WO2017198135 A1 WO 2017198135A1 CN 2017084457 W CN2017084457 W CN 2017084457W WO 2017198135 A1 WO2017198135 A1 WO 2017198135A1
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WO
WIPO (PCT)
Prior art keywords
redirect message
address
client
server
private network
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PCT/CN2017/084457
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English (en)
French (fr)
Inventor
杨熹
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华为技术有限公司
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Publication of WO2017198135A1 publication Critical patent/WO2017198135A1/zh

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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
    • H04L61/256—NAT traversal
    • H04L61/2567—NAT traversal for reachability, e.g. inquiring the address of a correspondent behind a NAT server
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]

Definitions

  • the present application relates to the field of communications, and in particular, to a method, device, and system for user tracing.
  • IPv4 Internet Protocol Version 4
  • NAT network address translation
  • CGN carrier-grade NAT
  • the independent CGN solution is to deploy a separate CGN device in the network, and assign a public network IP address and port (English: Port) resources to the user separately.
  • the CGN of the independent CGN scheme modifies the user IP address of the packet when forwarding the packet, so that the server cannot determine the account of the user corresponding to the received packet when necessary, that is, the user cannot trace the source.
  • the present application provides a method, a device, and a network device for user source tracing, which can implement user traceability and improve the accuracy of user traceability.
  • a method for user source tracing comprising:
  • the service server receives the first service request of the client access service server forwarded by the network address converter, and when the first service request does not include the client private network IP address, the service server returns the first redirect to the client.
  • a message the first redirect message is used to redirect the client to a public network location server, and the first redirect message carries a first uniform resource locator URL, and the first URL is the client Access the uniform resource locator corresponding to the resource;
  • the service server receives a second service request of the client accessing the service server portal forwarded by the network address converter, where the second service request includes: a port number and a second URL, where the second URL carries the client private network IP address and The first URL is obtained by the second redirect message received by the client, and the second redirect message is used to redirect the client to the service server, where The second redirect message carries a second URL, and the second redirect message is a redirect message returned by the private network server received by the client after accessing the private network location server by using the third redirect message, the third The redirect message is used to redirect the client to the private network location server, and the third redirect message is received by the client after accessing the public network location server by using the first redirect message. a redirect message returned by the public network server, where the third redirect message carries the first URL;
  • the service server parses the second URL to obtain the private network IP address of the client, and obtains the account of the client according to the private network IP address and port number.
  • the first aspect of the technical solution obtains a private network IP address through three redirect messages and two service requests, and implements user traceability according to the private network IP address, and the technical solution for querying the private network IP address in the log server,
  • the technical solution has the advantages of fast query of private network IP address and small query overhead.
  • the first redirect message, the second redirect message, and the third redirect message may be Redirect message based on hypertext transfer protocol.
  • the redirect messages in the above possible designs are all based on the hypertext transfer protocol, which can improve the reliability of the redirect message and improve the reliability of traceability.
  • a second aspect provides a method for redirecting a user traceability, the method comprising:
  • the public network location server receives the service request of the client forwarded by the network address converter, where the service request carries a public network IP address, a port number, and a URL; the public network location server determines, according to the public network IP address, the home network IP address.
  • the private network locating server generates a second redirect message, and sends the second redirect message to the client, where the second redirect message is used to redirect the client to the private network location server.
  • the technical solution of the second aspect supports the implementation of the technical solution of the first aspect.
  • a third aspect provides a method for obtaining a private network IP address in a user traceability source, where the method includes: a private network location server receives a service request sent by a client, where the service request carries a private network IP address; and the private network location server After the IP address of the private network is encapsulated in the URL, the third redirect message is sent to the client, where the third redirect message carries the URL, and the third redirect message is used to redirect the client. To the business server.
  • the technical solution of the third aspect supports the implementation of the technical solution of the first aspect.
  • a service server in a fourth aspect, includes: a transceiver unit and a parsing unit, and the transceiver unit and the parsing unit are configured to perform the method provided by the first aspect.
  • a fifth aspect provides a public network location server, where the server includes: a transceiver unit and a processing unit, where the transceiver unit and the processing unit are configured to perform the method provided by the second aspect.
  • a private network location server includes: a transceiver unit and a processing unit, where the transceiver unit and the processing unit are configured to perform the method provided by the foregoing third aspect.
  • the technical solution provided by the embodiment of the present application obtains a private network IP address through three redirections, and implements user tracing according to the private network IP address.
  • the technical solution of the present application has a private network as compared with the technical solution for querying the private network IP address of the log server.
  • the IP address query is fast and the query overhead is small.
  • the user does not have the perception of the traceability and does not affect the user experience.
  • FIG. 1 is a schematic flowchart of a method for user source tracing provided by an embodiment of the present application
  • FIG. 2 is a schematic flowchart of another method for user source tracing provided by an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a service server according to another embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a public network positioning server according to another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a private network location server according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a server provided by another embodiment of the present application.
  • FIG. 1 is a method for user source tracing.
  • the method is applied to an independent CGN solution, that is, an independent CGN device is deployed in the network.
  • the independent CGN solution includes the following devices: a client and a CGN device.
  • the log server and the service server, wherein the CGN device can be used to receive the protocol packet or the data packet of the client, and convert the private network IP address (ie, the source IP address) in the protocol packet or the data packet into a public network. IP address and port number are forwarded to the service service
  • the CGN device can modify the private IP address (also called the user IP address) in the packet when the packet is forwarded.
  • the service server can be used to receive protocol packets or data packets forwarded by the CGN device, and provide corresponding services to the client according to the protocol packet or data packet.
  • the log server can be used to store the public network IP address and the mapping between the port number and the private network IP address, and receive the query request from the service server.
  • the query request can include: the public network IP address and the port number, and the log server is based on
  • the query request returns a response message to the service server, where the response message includes: the public network IP address and the private network IP address corresponding to the port number that are queried according to the mapping relationship.
  • the method for user source tracing provided by the embodiment of the present invention includes the following steps. :
  • Step S101 The user submits a service request for accessing a service server portal (English: portal) website through the client.
  • a service server portal English: portal
  • the source IP address of the service request in the above step S101 is the private network IP address and the destination address of the user is the IP address of the service server, and the service request may further include a uniform resource locator (English: uniform resource locator, referred to as: URL) and so on.
  • a uniform resource locator English: uniform resource locator, referred to as: URL
  • Step S102 The CGN device receives the service request, and replaces the private network IP address of the user with a public network IP address and a port number, and forwards the replaced service request to the service server.
  • Step S103 The CGN device reports the mapping relationship between the public network IP address and the port number and the private IP address of the user to the log server.
  • Step S104 The service server obtains the public network IP address and port number of the user according to the replaced service request, and sends the public network IP address and port number of the user to the log server.
  • Step S105 The log server queries the public network IP address and the private network IP address corresponding to the port number from the stored mapping relationship, and returns the private network IP address to the service server.
  • Step S106 The service server obtains the account of the user according to the private network IP address, the public network IP address, and the port number.
  • the log server needs to store a large number of mappings, so that the cost of querying the private IP address of the user through the log server is large and the response time is long.
  • FIG. 2 is another method for user source tracing according to an embodiment of the present application.
  • the method is as shown in FIG. 2, and includes the following steps:
  • Step S201 the user submits a service request 1 for accessing the service server through the client;
  • the source IP address of the service request 1 in the above step S201 is the private network IP address and the destination address of the user is the IP address of the service server, and the service request 1 further includes the URL1, and the URL1 may be specifically corresponding to the resource that the user needs to access.
  • the service request may be a service request based on Hypertext Transfer Protocol (HTTP).
  • the service request 1 in the above step S201 may be a service request for accessing the service server portal, and may of course be a service request for accessing other resources of the service server.
  • Step S202 The CGN device receives the service request 1, and replaces the source IP address of the service request 1 with the public network IP address and the port number of the user, and forwards the service request 1 after the address replacement to the service server.
  • the CGN device replaces the source IP address of the service request 1 with the public network IP address and the port number by using the prior art method.
  • the method for replacing the address is not limited in the present application.
  • Step S203 When the payload of the service request 1 does not include the private network IP address of the user, the service server sends a first redirect message to the client, where the first redirect message is used to redirect the client to the public network.
  • Server LS2
  • the service server determines whether the source IP address of the service request 1 is a public network IP address or a private network IP address according to whether the source IP address of the service request 1 falls within the reserved address area, and the reserved address area includes: 10.*.* .*,172.16.*.* To 172.31.*.* and 192.168.*.*. Where * means any number between 0 and 255.
  • the service server determines that the source IP address of the service request 1 is the public network IP address, the service server continues to determine whether the payload of the service request 1 includes the private network IP address of the user.
  • the first redirect message includes a first redirect URL, and the first redirect URL includes: URL1 and URL4 accessing LS2.
  • the foregoing first redirect message may be an HTTP-based message.
  • HTTP protocol has reliability requirements for the message, such as retransmission and error correction, and there is no reliability requirement for the message reported to the log server. It is only required to send. If there is a network disconnection or an error, the log server cannot obtain the mapping relationship as in the above step S103, so that the user cannot trace the source, so the above redirect message can improve the traceability based on the HTTP protocol. reliability.
  • Step S204 The client sends a service request 4 for accessing the LS2 according to the first redirect message.
  • the source IP address of the service request 4 in the step S204 is the private network IP address and the destination IP address of the user is the IP address of the private network location server LS1, and the service request 4 may include the first redirect URL; the service request 4 may be For HTTP-based messages, of course, in actual applications, messages of other protocols can also be used.
  • Step S205 The CGN device receives the service request 4, and replaces the source IP address of the service request 4 with the public network IP address and the port number, and forwards the service request 4 after the address replacement to the LS2.
  • Step S206 The LS2 determines the private network location server LS1 of the client corresponding area according to the public network IP address, and sends a third redirect message to the client, where the third redirect message is used to redirect the client to the LS1.
  • the third redirection message may include a third redirection URL, where the third redirection URL may include: URL1 and URL3 of accessing LS1; the third redirection message may be an HTTP-based message, of course, in practical applications, Messages from other protocols can be used.
  • Step S207 The client sends a service request 3 for accessing LS1 according to the third redirect message.
  • the source IP address of the service request 3 in the above step S207 is the private network IP address of the user, and the destination IP address is the IP address of the LS1.
  • the service request 3 may further include a third redirect URL, and the service request 3 may be HTTP-based. Business request for the agreement.
  • Step S208 LS1 encapsulates the private IP address of the user and the URL1 into the URL 2 (ie, the second redirect URL), and sends a second redirect message to the client, where the second redirect message includes: URL2, the second The redirect message is used to redirect the client to the business server;
  • the foregoing second redirect message may be an HTTP-based message.
  • other protocol messages may also be used.
  • Step S209 The client sends a service request 2 for accessing the service server.
  • the source IP address of the service request 2 in the step S209 is the private network IP address of the user, and the payload portion of the service request 2 may include the URL2; the service request 2 may be an HTTP-based service request.
  • Step S210 The CGN device receives the service request 2, and replaces the source IP address of the service request 2 with the public network IP address and the port number, and forwards the service request 2 after the address replacement to the service server.
  • Step S211 The service server obtains the account of the user according to the public network IP address, the port number, and the private network IP address of the user in the URL 2, and provides the resource corresponding to the URL1 to the user through the client.
  • FIG. 2 introduces the method of user traceability provided by the present invention from the perspective of the whole process.
  • Figure 2 can also be split into a plurality of different process schematics from the perspective of each device, for example, steps S202, S210, and S211 in Figure 2
  • the server provides a method for user source tracing; step S205 and step S206 provide a user source redirection method from the perspective of the public network location server; and, step S207 and step S208, from the perspective of the private network location server
  • a method for sending a private network IP address in user traceability is provided.
  • the technical solution provided by the embodiment of the present invention obtains the private network IP address of the user by using the three-way redirection.
  • the technical solution of querying the private network IP address of the log server has the advantage that the private network IP address is fast.
  • the redirect message does not appear on the client, so the user does not perceive the traceability solution and does not affect the user experience.
  • the private network IP address is queried by the private network positioning server, and since the number of users of each private network is limited, the query speed is fast.
  • the public network positioning server in this application needs to maintain the mapping between the public network IP address and the private network positioning server.
  • the number of private network location servers under a public network location server is generally less than 10, so the number of queries is very limited.
  • the query of a single device is decomposed into two devices (a public network location server and a private network location server), which can effectively reduce the query cost of the system and improve the query speed.
  • FIG. 3 is a structural diagram of a service server 30 according to another embodiment of the present application.
  • the service server includes:
  • the transceiver unit 301 is configured to receive a first service request that the user forwarded by the network address converter accesses the service server 30 by using the client, and return to the client when the payload of the first service request does not include the private network IP address of the user. a first redirect message, the first redirect message is used to redirect the client to the public network location server, where the first redirect message includes a first URL, where the first URL is corresponding to the resource that the user needs to access.
  • Uniform resource locator
  • the transceiver unit 301 is further configured to receive a second service request of the access service server sent by the client forwarded by the network address converter, where the second service request includes: a port number and a second URL, where the second URL includes the private network of the user An IP address and the first URL; the second URL is obtained by the client by receiving the second redirect message, where the second redirect message is used to redirect the client to the service server, the second redirect message
  • the second redirect message is a redirect message returned by the private network server received by the client after accessing the private network location server according to the third redirect message, where the third redirect message is used for the client
  • the third redirect message is redirected to the private network location server, and the third redirect message is a redirect message returned by the public network server received by the client after accessing the public network location server according to the first redirect message.
  • the directed message includes the first URL;
  • the parsing unit 302 is configured to parse the second URL to obtain the private network IP address of the user, and obtain the account of the client according to the private network IP address and the port number.
  • the technical solution provided by another embodiment of the present application implements the source tracing of the user by carrying the private network IP address in the URL of the service request, because the private network IP address is carried in the URL, so the network address converter cannot set the private network IP in the URL.
  • the address is changed, so that the service server can obtain the private network IP address, thereby realizing the traceability of the user through the private network IP address, so it has the advantage of realizing the user traceability.
  • FIG. 4 is a public network location server 40 according to another embodiment of the present application.
  • the public network location server includes:
  • the transceiver unit 401 is configured to receive a service request of a client forwarded by the network address converter, where the service request carries a public network IP address, a port number, and a URL;
  • the processing unit 402 is configured to determine, according to the public network IP address, a private network location server that manages the public network IP address, generate a redirect message, and send the redirect message to the client, where the redirect message is used by the client. Redirect to the private network location server.
  • the public network location server provided by another embodiment of the present application supports the foregoing service server to implement user traceability.
  • the location server includes:
  • the transceiver unit 501 is configured to receive a service request sent by the user by using a client, where a source IP address of the service request is a private network IP address of the user;
  • the processing unit 502 is configured to: after the private network IP address is encapsulated in the URL, send a third redirect message to the client, where the redirect message includes the URL, where the redirect message is used to redirect the client to the service server.
  • the public network location server provided by another embodiment of the present application supports the foregoing service server to implement user traceability.
  • the private network location server provided in the next embodiment of the present application supports the foregoing service server to implement user traceability.
  • FIG. 6 is a server 60 provided by another embodiment of the present application.
  • the server 60 may be a service server as shown in FIG. 3 .
  • the server 60 may also be as shown in FIG. 4 .
  • the public network location server or the private network location server shown in FIG. 5, the server 60, as shown in FIG. 6, includes a processor 601, a memory 602, a transceiver 603, and a bus 604.
  • the transceiver 603 is used to interact with an external device to send and receive data.
  • the number of processors 601 in device 60 may be one or more.
  • processor 601, memory 602, and transceiver 603 may be connected by a bus or other means.
  • the memory 602 is configured to store program code
  • the processor 601 is configured to call the program code stored in the memory 602 to implement the functions of the service server, the public network location server, or the private network location server in FIG.
  • the processor 601 herein may be a processing component or a general term of multiple processing components.
  • the processing component may be a central processing unit (English: central processing unit, CPU for short), or may be an application-specific integrated circuit (ASIC), or configured to implement the present application.
  • One or more integrated circuits of an embodiment such as one or more digital signal processors (English: digital signal processor, DSP for short), or one or more field programmable gate arrays (English: field-programmable gate Array, referred to as: FPGA).
  • the memory 603 may be a storage device or a collective name of a plurality of storage elements, and is used to store executable program code or parameters, data, and the like required for the application running device to operate.
  • the memory 603 may include a random access memory (English: random-access memory, RAM for short), and may also include a non-volatile memory such as a disk memory, a flash memory, or the like.
  • the bus 604 can be an industry standard architecture (English: Industry Standard Architecture, ISA for short) bus, external device interconnection (English: Peripheral Component Interconnect, PCI for short) or an extended industry standard architecture (English: Extended Industry Standard Architecture) , referred to as: EISA) bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.
  • the server may also include input and output devices coupled to bus 604 for connection to other portions, such as processor 601, via a bus.
  • the input/output device can provide an input interface for the operator, so that the operator can select the control item through the input interface, and can also be other interfaces through which other devices can be externally connected.

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Abstract

本申请公开了一种用户溯源的方法及系统，所述方法包括：业务服务器接收网络地址转换器转发的用户通过客户端访问业务服务器的第一业务请求，当所述第一业务请求的载荷中未包含客户端私网IP地址时，业务服务器向所述客户端返回第一重定向消息，所述第一重定向消息用于将所述客户端重定向至公网定位服务器，所述第一重定向消息包括第一统一资源定位符；业务服务器接收网络地址转换器转发的客户端访问业务服务器的第二业务请求，所述第二业务请求包括：端口号以及第二URL，业务服务器解析所述第二URL获取所述客户端的私网IP地址，依据所述私网IP地址和端口号获取所述客户端的账户。本申请具有实现用户溯源的优点。

Description

一种用户溯源的方法、装置及系统 技术领域
本申请涉及通信领域，尤其涉及一种用户溯源(英文：user tracing)的方法、装置及系统。
背景技术
随着第四版本因特网协议(英文：Internet Protocol Version 4，中简称：IPv4)地址的耗尽，运营商需要借助网络地址转换(英文：network address translation，简称：NAT)技术支撑业务发展，运营商使用的NAT技术也可以称为运营商级NAT(英文：carrier-grade NAT，简称：CGN)。该技术可以实现多个上网用户共享一个IPv4地址，从而大幅提升IPv4地址利用率。
根据CGN设备形态的差别，可以分为：集成CGN方案、独立CGN方案。独立CGN方案是在网络中部署独立CGN设备，单独为用户分配公网IP地址和端口(英文：Port)资源。由于独立CGN方案的CGN在转发报文时会修改报文中的用户IP地址，导致服务器在有需要时不能确定接收的报文对应的用户的账户，即不能实现用户溯源。
发明内容
本申请提供一种用户溯源的方法、装置及网络设备，可以实现用户溯源，并且提高用户溯源的准确性。
第一方面，提供一种用户溯源的方法，该方法包括：
业务服务器接收网络地址转换器转发的客户端访问业务服务器的第一业务请求，当所述第一业务请求中未包含客户端私网IP地址时，业务服务器向所述客户端返回第一重定向消息，所述第一重定向消息用于将所述客户端重定向至公网定位服务器，所述第一重定向消息携带第一统一资源定位符URL，所述第一URL为所述客户端访问资源对应的统一资源定位符；
业务服务器接收网络地址转换器转发的客户端访问业务服务器门户网站的第二业务请求，所述第二业务请求包括：端口号以及第二URL，所述第二URL携带客户端私网IP地址以及所述第一URL；所述第二URL通过所述客户端接收的第二重定向消息获取，所述第二重定向消息用于将所述客户端重定向至所述业务服务器，所述第二重定向消息携带第二URL；所述第二重定向消息为所述客户端通过第三重定向消息访问私网定位服务器后接收的所述私网服务器返回的重定向消息，所述第三重定向消息用于将所述客户端重定向至所述私网定位服务器，所述第三重定向消息为所述客户端通过所述第一重定向消息访问所述公网定位服务器后接收的所述公网服务器返回的重定向消息，所述第三重定向消息携带所述第一URL；
业务服务器解析所述第二URL获取所述客户端的私网IP地址，依据所述私网IP地址和端口号获取所述客户端的账户。
第一方面的技术方案通过三个重定向消息以及二个业务请求来获取私网IP地址，依据私网IP地址实现用户溯源，相对于在日志服务器查询私网IP地址的技术方案，本申请的技术方案具有私网IP地址查询快，查询开销小的优点。
在一种可选设计中，上述第一重定向消息、第二重定向消息、第三重定向消息都可以为 基于超文本传输协议的重定向消息。
上述可能设计中的重定向消息均基于超文本传输协议，能够提高重定向消息的可靠性，从而提高溯源的可靠性。
第二方面，提供一种用户溯源的重定向方法，所述方法包括：
公网定位服务器接收网络地址转换器转发的客户端的业务请求，所述业务请求携带公网IP地址、端口号和URL；公网定位服务器依据所述公网IP地址确定归属所述公网IP地址的私网定位服务器，生成第二重定向消息，将所述第二重定向消息发送给客户端，所述第二重定向消息用于将所述客户端重定向至所述私网定位服务器。
第二方面的技术方案支持了第一方面的技术方案的实现。
第三方面，提供一种用户溯源中私网IP地址获取方法，所述方法包括：私网定位服务器接收客户端发送的业务请求，所述业务请求携带私网IP地址；私网定位服务器将所述私网IP地址封装在URL后，向所述客户端发送第三重定向消息，所述第三重定向消息携带所述URL，所述第三重定向消息用于将所述客户端重定向至业务服务器。
第三方面的技术方案支持了第一方面的技术方案的实现。
第四方面，提供一种业务服务器，该业务服务器包括：收发单元和解析单元，该收发单元和解析单元用于执行上述第一方面提供的方法。
第五方面，提供一种公网定位服务器，该服务器包括：收发单元和处理单元，上述收发单元和处理单元用于执行上述第二方面提供的方法。
第六方面，提供一种私网定位服务器，该服务器包括：收发单元和处理单元，上述收发单元和处理单元用于执行上述第三方面提供的方法。
本申请实施例提供的技术方案通过三次重定向来获取私网IP地址，依据私网IP地址实现用户溯源，相对于在日志服务器查询私网IP地址的技术方案，本申请的技术方案具有私网IP地址查询快，查询开销小的优点，并且用户对溯源不会有感知，不会影响用户的体验度。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。
图1是本申请实施例提供的一种用户溯源的方法的流程示意图；
图2是本申请实施例提供的另一种用户溯源的方法的流程示意图；
图3是本申请另一实施例提供的业务服务器的结构示意图；
图4是本申请又一实施例提供的公网定位服务器的结构示意图；
图5是本申请下一实施例提供的私网定位服务器的结构示意图；
图6是本申请另外实施例提供的服务器的结构示意图。
具体实施方式
参阅图1，图1为一种用户溯源的方法，该方法应用于独立CGN方案，即网络中部署有独立的CGN设备，如图1所示，独立CGN方案包括如下设备，客户端、CGN设备、日志服务器和业务服务器，其中，CGN设备可以用于接收客户端的协议报文或数据报文，将该协议报文或数据报文中的私网IP地址(即源IP地址)转换成公网IP地址和端口号后转发给业务服 务器，CGN设备转发报文时修改报文中的私网IP地址(也可以称为用户IP地址)即可以实现多个客户端共享一个公网IP地址(即多个私网IP地址可以共用一个公网IP地址(即IPv4地址)，从而提升IPv4地址利用率，业务服务器可以用于接收CGN设备转发的协议报文或数据报文，依据该协议报文或数据报文为客户端提供相应的资源，日志服务器可以用于存储公网IP地址以及端口号与私网IP地址之间的映射关系，接收业务服务器的查询请求，查询请求可以包括：公网IP地址以及端口号，日志服务器依据该查询请求向业务服务器返回响应消息，该响应消息包括：依据该映射关系查询出的该公网IP地址以及端口号对应的私网IP地址。本发明实施例提供的用户溯源的方法包括如下步骤：
步骤S101、用户通过客户端提交访问业务服务器门户(英文：portal)网站的业务请求。
上述步骤S101中的业务请求的源IP地址为所述用户的私网IP地址、目的地址为业务服务器的IP地址、所述业务请求还可以包括统一资源定位符(英文：uniform resource locator，简称：URL)等。
步骤S102、CGN设备接收该业务请求，将该用户的私网IP地址更换成公网IP地址以及端口号，将更换后的业务请求转发给业务服务器。
步骤S103、CGN设备将该公网IP地址以及端口号与用户的私网IP地址的映射关系上报给日志服务器。
步骤S104、业务服务器依据更换后的业务请求获取该用户的公网IP地址以及端口号，将该用户的公网IP地址以及端口号发送给日志服务器。
步骤S105、日志服务器从存储的映射关系中查询出该公网IP地址以及端口号对应的私网IP地址，并将该私网IP地址返回给业务服务器。
步骤S106、业务服务器依据该私网IP地址、公网IP地址以及端口号获取该用户的账号。
上述通过日志服务器查询私网IP地址的技术方案中，日志服务器需要存储海量的映射关系，使得通过日志服务器查询用户的私网IP地址时的开销大，响应时间长。
参阅图2，图2为本申请实施例提供的另一种用户溯源的方法，该方法如图2所示，包括如下步骤：
步骤S201、用户通过客户端提交访问业务服务器的业务请求1；
上述步骤S201的业务请求1的源IP地址为该用户的私网IP地址、目的地址为该业务服务器的IP地址，业务请求1还包括URL1，该URL1具体可以为，用户需要访问的资源对应的URL，上述业务请求可以为基于超文本传输协议(英文：Hypertext Transfer Protocol，简称：HTTP)的业务请求。
上述步骤S201中的业务请求1可以是访问业务服务器门户网站的业务请求，当然也可以是访问业务服务器其他资源的业务请求。
步骤S202、CGN设备接收该业务请求1，将业务请求1的源IP地址更换成该用户的公网IP地址以及端口号，将更换地址后的业务请求1转发给业务服务器。
上述步骤S202中CGN设备将业务请求1的源IP地址更换成公网IP地址以及端口号的方式可以采用现有技术的方法，本申请对上述更换地址的方法并不限定。
步骤S203、当业务请求1的载荷中未包含该用户的私网IP地址时，业务服务器向客户端发送第一重定向消息，该第一重定向消息用于将客户端重定向至公网定位服务器LS2。
其中，业务服务器根据业务请求1的源IP地址是否落入保留地址区域来确定业务请求1的源IP地址为公网IP地址还是私网IP地址，所述保留地址区域包括：10.*.*.*，172.16.*.* 至172.31.*.*以及192.168.*.*。其中，*指0到255之间的任意数字。当业务服务器确定业务请求1的源IP地址为公网IP地址后，该业务服务器继续确定业务请求1的载荷中是否包含该用户的私网IP地址。
上述第一重定向消息包括第一重定向URL，该第一重定向URL包括：URL1以及访问LS2的URL4。
上述第一重定向消息可以为基于HTTP的消息，当然在实际应用中，也可以采用其他的协议的消息。上述重定向消息基于HTTP协议可以提高消息的可靠性，因为基于HTTP协议对消息有可靠性的要求，例如重发、纠错等功能，而对于上报给日志服务器的消息并没有可靠性的要求，其仅仅只是要求发送，如果出现断网或出错的情况，日志服务器就无法获取到如上述步骤S103中的映射关系，这样就无法实现用户的溯源，所以上述重定向消息基于HTTP协议可以提高溯源的可靠性。
步骤S204、客户端依据第一重定向消息发送访问LS2的业务请求4。
上述步骤S204的业务请求4的源IP地址为该用户的私网IP地址、目的IP地址为私网定位服务器LS1的IP地址，该业务请求4可以包括第一重定向URL；上述业务请求4可以为基于HTTP的消息，当然在实际应用中，也可以采用其他的协议的消息。
步骤S205、CGN设备接收该业务请求4，将业务请求4的源IP地址更换成公网IP地址以及端口号，将更换地址后的业务请求4转发给LS2。
步骤S206、LS2依据该公网IP地址确定客户端对应区域的私网定位服务器LS1，向客户端发送第三重定向消息，该第三重定向消息用于将客户端重定向至LS1。
上述第三重定向消息可以包括第三重定向URL，该第三重定向URL可以包括：URL1以及访问LS1的URL3；上述第三重定向消息可以为基于HTTP的消息，当然在实际应用中，也可以采用其他的协议的消息。
步骤S207、客户端依据第三重定向消息发送访问LS1的业务请求3。
上述步骤S207的业务请求3的源IP地址为该用户的私网IP地址、目的IP地址为LS1的IP地址，该业务请求3还可以包括第三重定向URL，上述业务请求3可以为基于HTTP协议的业务请求。
步骤S208、LS1将该用户的私网IP地址与URL1封装到URL2(即第二重定向URL)内，向客户端发送第二重定向消息，该第二重定向消息包括：URL2，该第二重定向消息用于将客户端重定向至业务服务器；
上述第二重定向消息可以为基于HTTP的消息，当然在实际应用中，也可以采用其他的协议的消息。
步骤S209、客户端发送访问业务服务器的业务请求2。
该步骤S209的业务请求2的源IP地址为该用户的私网IP地址，该业务请求2的载荷(payload)部分可以包括该URL2；上述业务请求2可以为基于HTTP的业务请求。
步骤S210、CGN设备接收该业务请求2，将业务请求2的源IP地址更换成公网IP地址以及端口号，将更换地址后的业务请求2转发给业务服务器。
步骤S211、业务服务器依据该公网IP地址、端口号以及以及所述URL2中的该用户的私网IP地址获取该用户的账号，并通过该客户端向所述用户提供URL1对应的资源。
图2从全流程的角度介绍了本发明提供的用户溯源的方法。图2也可以从每个设备的角度，拆分成多个不同的过程示意图，例如，图2中的步骤S202、步骤S210和步骤S211从业 务服务器的角度提供了一种用户溯源的方法；步骤S205和步骤S206从公网定位服务器的角度提供了一种用户溯源的重定向方法；以及，步骤S207和步骤S208从私网定位服务器的角度提供了一种用户溯源中私网IP地址发送方法。
本申请实施例提供的技术方案通过三次重定向来获取用户的私网IP地址，相对于在日志服务器查询私网IP地址的技术方案，具有私网IP地址查询快的优点，本发明实施例中的重定向消息并不会显示在客户端上，所以用户对该溯源技术方案没有感知，不会影响用户体验。此外，本申请的技术方案，私网IP地址是通过私网定位服务器查询的，由于每个私网的用户数量有限，所以其查询的速度会很快。本申请中的公网定位服务器，需要维护公网IP地址与私网定位服务器之间的映射关系。在实际应用中，一个公网定位服务器下的私网定位服务器的数量一般在10个以下，所以其查询的数量非常有限。本申请实施例将单个设备(日志服务器)的查询分解成两个设备(公网定位服务器和私网定位服务器)的查询，能够有效的降低系统的查询开销，提高查询速度。
如图3所示，图3为本申请另一实施例提供的一种业务服务器30的结构图，该业务服务器如图3所示，包括：
收发单元301，用于接收网络地址转换器转发的用户通过客户端访问业务服务器30的第一业务请求，当第一业务请求的载荷中未包含用户的私网IP地址时，向该客户端返回第一重定向消息，该第一重定向消息用于将该客户端重定向至公网定位服务器，该第一重定向消息包括第一URL，该第一URL为该用户需要访问的资源对应的统一资源定位符；
收发单元301，还用于接收网络地址转换器转发的客户端发送的访问业务服务器的第二业务请求，该第二业务请求包括：端口号以及第二URL，该第二URL包括用户的私网IP地址以及该第一URL；该第二URL由客户端通过接收的第二重定向消息获取，该第二重定向消息用于将该客户端重定向至该业务服务器，该第二重定向消息包括第二URL；该第二重定向消息为该客户端根据第三重定向消息访问私网定位服务器后接收的该私网服务器返回的重定向消息，该第三重定向消息用于将该客户端重定向至该私网定位服务器，该第三重定向消息为该客户端根据该第一重定向消息访问该公网定位服务器后接收的该公网服务器返回的重定向消息，该第三重定向消息包括该第一URL；
解析单元302，用于解析该第二URL获取该用户的私网IP地址，依据该私网IP地址和端口号获取该客户端的账户。
本申请另一实施例提供的技术方案通过业务请求的URL中携带私网IP地址来实现用户的溯源，因为私网IP地址携带在URL中，所以网络地址转换器无法将URL内的私网IP地址变更，这样就保证了业务服务器能够获取到私网IP地址，从而通过私网IP地址实现用户的溯源，所以其具有实现用户溯源的优点。
如图4所示，图4为本申请又一实施例提供的一种公网定位服务器40，本实施例中的技术术语的定义可以参见如图2所示实施例的描述，这里不再赘述。该公网定位服务器包括：
收发单元401，用于接收网络地址转换器转发的客户端的业务请求，该业务请求携带公网IP地址、端口号和URL；
处理单元402，用于依据该公网IP地址确定管理该公网IP地址的私网定位服务器，生成重定向消息，将该重定向消息发送给客户端，该重定向消息用于将该客户端重定向至该私网定位服务器。
本申请又一实施例提供的公网定位服务器支持了上述业务服务器实现用户溯源。
如图5所示，本申请下一实施例提供一种私网定位服务器50，本实施例中的技术术语的定义可以参见如图2所示实施例的描述，这里不再赘述，该私网定位服务器包括：
收发单元501，用于接收用户通过客户端发送的业务请求，该业务请求的源IP地址为该用户的私网IP地址；
处理单元502，用于将该私网IP地址封装在URL后，向该客户端发送第三重定向消息，该重定向消息包括该URL，该重定向消息用于将该客户端重定向至业务服务器。
本申请又一实施例提供的公网定位服务器支持了上述业务服务器实现用户溯源。
本申请下一实施例提供的私网定位服务器支持了上述业务服务器实现用户溯源。
参阅图6，图6为本申请另外实施例提供的一种服务器60，该服务器60可以为如图3所示的业务服务器，当然在实际应用中，上述服务器60还可以是如图4所示的公网定位服务器或如图5所示的私网定位服务器，该服务器60如图6所示，包括：处理器601、存储器602、收发器603和总线604。收发器603用于与外部设备交互以收发数据。设备60中的处理器601的数量可以是一个或多个。本申请的一些实施例中，处理器601、存储器602和收发器603可通过总线或其他方式连接。存储器602用于存储程序代码，处理器601用于调用存储器602中存储的程序代码，以实现图2中业务服务器、公网定位服务器或私网定位服务器的功能。关于本实施例涉及的术语的含义以及举例，可以参考图2对应的实施例。此处不再赘述。需要说明的是，这里的处理器601可以是一个处理元件，也可以是多个处理元件的统称。例如，该处理元件可以是中央处理器(英文：central processing unit，简称：CPU)，也可以是特定集成电路(英文：application-specific integrated circuit，简称：ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个数字信号处理器(英文：digital signal processor，简称：DSP)，或，一个或者多个现场可编程门阵列(英文：field-programmable gate array，简称：FPGA)。
存储器603可以是一个存储装置，也可以是多个存储元件的统称，且用于存储可执行程序代码或应用程序运行装置运行所需要参数、数据等。且存储器603可以包括随机存储器(英文：random-access memory，简称：RAM)，也可以包括非易失性存储器(non-volatile memory)，例如磁盘存储器，闪存(flash)等。
总线604可以是工业标准体系结构(英文：Industry Standard Architecture，简称：ISA)总线、外部设备互连(英文：Peripheral Component Interconnect，简称：PCI)总线或扩展工业标准体系结构(英文：Extended Industry Standard Architecture，简称：EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图6中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
该服务器还可以包括输入输出装置，连接于总线604，以通过总线与处理器601等其它部分连接。该输入输出装置可以为操作人员提供一输入界面，以便操作人员通过该输入界面选择布控项，还可以是其它接口，可通过该接口外接其它设备。
需要说明的是，对于前述的各个方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某一些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详细描述的部分，可以参见其他实施例的相关描述。

Claims (12)

  1. 一种用户溯源的方法，其特征在于，所述方法包括如下步骤：
    业务服务器接收网络地址转换器转发的用户通过客户端访问所述业务服务器的第一业务请求，
    当所述第一业务请求的载荷中未包含所述用户的私网IP地址时，所述业务服务器向所述客户端返回第一重定向消息，所述第一重定向消息用于将所述客户端重定向至公网定位服务器，所述第一重定向消息包括第一统一资源定位符URL，所述第一URL为所述用户需要访问的资源对应的统一资源定位符；
    所述业务服务器接收所述网络地址转换器转发的所述客户端发送的访问所述业务服务器的第二业务请求，所述第二业务请求包括：端口号以及第二URL，所述第二URL包括所述用户的私网IP地址以及所述第一URL；所述第二URL由所述客户端通过接收的第二重定向消息获取，所述第二重定向消息用于将所述客户端重定向至所述业务服务器，所述第二重定向消息包括所述第二URL；所述第二重定向消息为所述客户端根据第三重定向消息访问私网定位服务器后接收的所述私网服务器返回的重定向消息，所述第三重定向消息用于将所述客户端重定向至所述私网定位服务器，所述第三重定向消息为所述客户端根据所述第一重定向消息访问所述公网定位服务器后接收的所述公网服务器返回的重定向消息，所述第三重定向消息携带所述第一URL；
    所述业务服务器解析所述第二URL获取所述用户的私网IP地址，依据所述私网IP地址和端口号获取所述用户的账户。
  2. 根据权利要求1所述的方法，其特征在于，所述第一重定向消息为基于超文本传输协议HTTP协议的重定向消息。
  3. 一种用户溯源的重定向方法，其特征在于，所述方法包括：
    公网定位服务器接收网络地址转换器转发的用户通过客户端发送的业务请求，所述业务请求的源IP地址为所述用户的公网IP地址、所述业务请求包括端口号和统一资源定位符URL；
    所述公网定位服务器依据所述公网IP地址确定管理所述公网IP地址的私网定位服务器，生成重定向消息，将所述重定向消息发送给所述客户端，所述重定向消息用于将所述客户端重定向至所述私网定位服务器。
  4. 根据权利要求3所述的方法，其特征在于，所述重定向消息为基于HTTP协议的重定向消息。
  5. 一种用户溯源中私网IP地址发送方法，其特征在于，所述方法包括：
    私网定位服务器接收用户通过客户端发送的业务请求，所述业务请求的源IP地址为所述用户的私网IP地址；
    所述私网定位服务器将所述私网IP地址封装在统一资源定位符URL后，向所述客户端发送重定向消息，所述重定向消息的载荷包括所述URL，所述重定向消息用于将所述客户端重定向至业务服务器。
  6. 根据权利要求5所述的方法，其特征在于，所述第三重定向消息为基于HTTP协议的重定向消息。
  7. 一种业务服务器，其特征在于，所述业务服务器包括：
    收发单元，用于接收网络地址转换器转发的用户通过客户端访问所述业务服务器的第一业务请求，当所述第一业务请求的载荷中未包含所述用户的私网IP地址时，向所述客户端返 回第一重定向消息，所述第一重定向消息用于将所述客户端重定向至公网定位服务器，所述第一重定向消息包括第一统一资源定位符URL，所述第一URL为所述用户需要访问的资源对应的统一资源定位符；
    收发单元，还用于接收所述网络地址转换器转发的所述客户端发送的访问业务服务器的第二业务请求，所述第二业务请求包括：端口号以及第二URL，所述第二URL包括所述用户的私网IP地址以及所述第一URL；所述第二URL由所述客户端通过接收的第二重定向消息获取，所述第二重定向消息用于将所述客户端重定向至所述业务服务器，所述第二重定向消息包括所述第二URL；所述第二重定向消息为所述客户端根据第三重定向消息访问私网定位服务器后接收的所述私网服务器返回的重定向消息，所述第三重定向消息用于将所述客户端重定向至所述私网定位服务器，所述第三重定向消息为所述客户端根据所述第一重定向消息访问所述公网定位服务器后接收的所述公网服务器返回的重定向消息，所述第三重定向消息携带所述第一URL；
    解析单元，用于解析所述第二URL获取所述私网IP地址，依据所述私网IP地址和端口号获取所述用户的账户。
  8. 根据权利要求7所述的业务服务器，其特征在于，所述第一重定向消息为基于HTTP协议的重定向消息。
  9. 一种公网定位服务器，其特征在于，所述服务器包括：
    收发单元，用于接收网络地址转换器转发的用户通过客户端发送的业务请求，所述业务请求的源IP地址为所述用户的包括公网IP地址，所述业务请求包括端口号和统一资源定位符URL；
    处理单元，用于依据所述公网IP地址确定管理所述公网IP地址的私网定位服务器，生成重定向消息，将所述重定向消息发送给所述客户端，所述重定向消息用于将所述客户端重定向至所述私网定位服务器。
  10. 根据权利要求9所述的公网定位服务器，其特征在于，所述重定向消息为基于HTTP协议的重定向消息。
  11. 一种私网定位服务器，其特征在于，所述服务器包括：
    收发单元，用于接收用户通过客户端发送的业务请求，所述业务请求的源IP地址为所述用户的私网IP地址；
    处理单元，用于将所述私网IP地址封装在统一资源定位符URL后，向所述客户端发送重定向消息，所述重定向消息携带所述URL，所述重定向消息用于将所述客户端重定向至业务服务器。
  12. 根据权利要求11所述的装置，其特征在于，所述重定向消息为基于HTTP协议的重定向消息。
PCT/CN2017/084457 2016-05-16 2017-05-16 一种用户溯源的方法、装置及系统 WO2017198135A1 (zh)

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