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Method for recording access of address changeover users in data transmission process

A technology of address conversion and address, which is applied in the field of data communication, can solve the problem of not being able to record the records that users have visited, and achieve the effect of preventing illegal access and intrusion

Inactive Publication Date: 2005-11-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the shortcoming that the current address translation technology cannot record the records that the user has visited, and propose a method for recording the access of the address translation user in the data transmission process, so as to quickly locate the address translation user, Effectively prevent illegal access and intrusion to the network

Method used

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  • Method for recording access of address changeover users in data transmission process
  • Method for recording access of address changeover users in data transmission process
  • Method for recording access of address changeover users in data transmission process

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Embodiment Construction

[0021] In the method of the present invention, a hash table for recording message information is firstly set during system initialization, and is used to record information such as source address, source port, destination address, destination port, and access time of the message.

[0022] Then, the user of the device establishes an access control table for each host according to the addresses allowed to be accessed inside the device, which records the source address, source port, destination address, destination port, protocol number, and flag information of whether to record the IP message. , which is used to compare with the received message and decide whether to perform address translation on the message. The device may be an address translation router, which is placed between the internal network and the Internet.

[0023] The process of this method is as follows figure 2 As shown, the information contained in the received message is compared with the relevant informatio...

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Abstract

This invention relates to a method for registering access of address conversion users in data transmission. This invention first of all sets a message information register hash table at initialization, sets up access control table of each host to compare the information contained in the message and in the access control table not register if they are different or if all information is the same, a corresponding register of the said message is recalled from the hash table according to the source and destination ports to finish the address conversion or add the received message information into the hash table to make judgement to the messages, then register them and finish address conversion to register the access time finally.

Description

technical field [0001] The invention relates to a method for recording the access of an address conversion user during data transmission, and belongs to the technical field of data communication. Background technique [0002] The rapid popularization of the Internet has led to a shortage of IP address resources. To solve this contradiction, Network Address Translation (NAT for short) is proposed. One of the disadvantages of NAT is that it makes network debugging complicated. This is because NAT technology hides the real IP address of the internal LAN, and currently almost all use port and address address translation (Port Address Translation, below PAT for short), many internal LAN users share a legal IP address to access the Internet, so when it is found that internal LAN users have attacks and other behaviors on the external network, it is difficult to locate which user in the internal LAN is sending out the attack. [0003] There are two ways of address translation: one-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00H04L29/06
Inventor 王宁
Owner HUAWEI TECH CO LTD
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