Internet protocol (IP) source tracing method, device and system

A device and IP address technology, applied in the field of communications, can solve the problems of increasing the uncontrollable points in the traceability process, increasing the traceability process time, and increasing the cost of transformation, and achieves the effect of reducing the uncontrollable points, time, and cost of transformation.

Inactive Publication Date: 2014-04-16
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of the above traceability, the inventor found that there are at least the following problems in the prior art: the existing traceability scheme obtains the user account of the required traceability user through two queries, that is, querying the log server and the AAA server respectively, The query process will increase the time of the traceability process, thereby reducing the traceability efficiency
And the two query processes will increase the uncontrollable points in the traceability process, which will affect the reliability of the traceability
At the same time, the original AAA server needs to be transformed in the plan to meet the requirements of the AAA server for relevant information query in the traceability process. The transformation of the AAA system may have a certain impact on the existing business and increase the corresponding transformation cost. fees, etc.

Method used

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  • Internet protocol (IP) source tracing method, device and system
  • Internet protocol (IP) source tracing method, device and system
  • Internet protocol (IP) source tracing method, device and system

Examples

Experimental program
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Embodiment 1

[0041] The embodiment of the present invention provides a kind of IP traceability method, and its executive body is NAT equipment, such as figure 1 As shown, the method includes:

[0042] 101. The NAT device receives and stores the user account and the private network IP address of the user terminal sent by the broadband access server BRAS.

[0043] When a user terminal initiates a PPPoE (Point-to-Point Protocol over Ethernet, point-to-point protocol on Ethernet) dial-up, it will first send an authentication message to the AAA server through the BRAS (Broadband Remote Access Server, Broadband Access Server) for authentication. After the AAA server authentication is passed, the BRAS can assign a private network IP address to the user terminal, and the authentication message carries the user account of the user terminal, so that the BRAS will obtain the user terminal's User account and private network IP address, and then, the BRAS will send the user account and private network...

Embodiment 2

[0059] The embodiment of the present invention provides an IP traceability method, such as image 3 As shown, the method includes the following steps:

[0060] 301. The user terminal 31 initiates PPPoE dialing to perform an authentication process. After the AAA server 35 passes the authentication, the BRAS 32 allocates a private network IP address for the user terminal.

[0061] When the user terminal 31 initiates PPPoE dial-up access to the network, it needs to be authenticated first, and the user terminal will send information such as its user account to the BRAS32, and then the BRAS32 cooperates with the AAA server 35 to complete the authentication of the user terminal 31. authentication, the specific authentication process is the prior art, and will not be repeated here. After passing the authentication, the AAA server 35 will notify the BRAS 32 that the user terminal 31 has passed the authentication, and the BRAS 32 will assign a private network IP address to the user te...

Embodiment 3

[0077] Embodiments of the present invention further provide device embodiments for implementing the steps and methods in Embodiment 1 and Embodiment 2 above.

[0078] An embodiment of the present invention provides a NAT device, such as Figure 4 As shown, the NAT device includes: a receiving module 401 , a storage module 402 , a creating module 403 , and a sending module 404 .

[0079] The receiving module 401 is configured to receive the user account and private network IP address of the user terminal sent by the broadband access server BRAS.

[0080] The storage module 402 is configured to store the user account and private network IP address of the user terminal received by the receiving module 401 .

[0081] The creating module 403 is used to create an address mapping relationship table when the user terminal accesses the Internet, and the address mapping relationship table includes: the user account of the user terminal, the private network IP address, the converted pub...

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Abstract

An embodiment of the invention provides an Internet protocol (IP) source tracing method, device and system and relates to the communication field. An AAA server does not need to be modified, and meanwhile source tracing efficiency and reliability are improved. The method includes that a network address translator (NAT) device receives and stores a user account and a private network IP address of a user terminal and transmitted by a broadband remote access server (BRAS) and builds an address mapping relation table when receiving a business access request of the user terminal. The address mapping relation table comprises the user account of the user terminal, the private network IP address, a converted public network IP address, a port identifier and a user Internet timestamp. The NAT device reports the address mapping relation table to a log server to enable the log server to conduct IP source tracing according to the address mapping relation table.

Description

technical field [0001] The present invention relates to the communication field, in particular to an IP traceability method, device and system. Background technique [0002] With the development of the Internet, the number of broadband users has increased sharply, and the global public network IP addresses are almost exhausted. In order to solve the problem of public network IP address consumption, operators have proposed NAT (Network Address Translation) technology, using private network IP When communicating with the external network, the user terminal with the same IP address can convert the private network IP address to the public network IP address through the NAT device, so that the user terminal can connect to the external public network normally, which solves the problem of public IP address shortage, and can Make multiple user terminals share the external network connection. [0003] In a network system deployed with NAT devices, in order to perform IP traceability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
Inventor 文湘江徐东杨艳松何晓峰王健全夏俊杰
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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