Method and apparatus for transforming addresses

An address translation and IP address technology, applied in the field of communication, can solve the problems of resource limitation of address translation equipment and inability to process requests in a timely and correct manner.

Active Publication Date: 2017-04-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The embodiment of the present invention provides an address translation method and device to solve the problem in the prior art that the resource of the address translation device itself is limited and the request cannot be processed correctly in time

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  • Method and apparatus for transforming addresses
  • Method and apparatus for transforming addresses

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Embodiment Construction

[0085] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0086] For the multi-channel protocol based on distinguishing signaling and media in the prior art, such as RTSP, Session Initiation Protocol (SIP) and other protocols, in the process of message transmission, because the IP address is carried in the payload, the NAT device is receiving When the message arrives, ASPF processing needs to be executed, which leads to the problem of resource bottlenecks encountered by the NAT device when proces...

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Abstract

The invention relates to the technical field of communication, and discloses a method and apparatus for transforming addresses, aiming at reducing the handling load of an NAT device. The method includes the following steps: the NAT device receiving a message transmitted by a first terminal from a local area network or transmitted by a second terminal to the first terminal, acquiring the local area network IP address of the first terminal, and determining the transversal state attribute value corresponding to the local area network IP address of the first terminal, and if the transversal state attribute value is a first value which represents the first terminal and can achieve NAT transversal, leaving out ASPF processing on the message, and forwarding the message. Thus, by actively detecting and acquiring the NAT transversal capability of the terminal in the local area network, the method enables the NAT device to changes the passive processing of address transformation of a multi-channel protocol message into active processing, which can reduce the amount of processing and loads of the NAT device, increases the processing efficiency of address transformation, and can reduce the risk of service break off brought by ASPF processing.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to an address conversion method and device. Background technique [0002] In the communication process between the terminal located in the local area network and the terminal in the wide area network, in order to ensure that the network address is correct for normal communication, the NAT device will automatically modify the message when the exchanged message passes through the Network Address Transform (NAT) device Internet Protocol (IP) address information of the outer header. However, some messages based on multi-channel protocols that distinguish signaling and media also carry IP addresses in the data part, which is the IP address of the inner header of the message, so the NAT device also needs to modify the data part of the message at the same time , That is, modify the IP address of the inner header of the message so that the IP address of the inner header of the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
CPCH04L61/2514H04L61/256
Inventor 常诚袁燕龙高振江
Owner HUAWEI TECH CO LTD
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