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NAT traversal method, equipment and system

A technology of equipment and network equipment, applied in the field of communication, can solve the problem of low traversal success rate of NAT equipment, and achieve the effect of improving the efficiency of NAT traversal

Active Publication Date: 2021-09-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a method, device and system for NAT traversal, which can solve the problem of low success rate of NAT device traversal required by timing

Method used

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  • NAT traversal method, equipment and system
  • NAT traversal method, equipment and system
  • NAT traversal method, equipment and system

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0050]The technical solution of the embodiment of the present application can be applied to various communication systems, for example: global system of mobile communication (globalsystem of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evol...

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Abstract

The embodiment of the invention provides a network address translation traversal method, device and system, and relates to a network address translation technology in the field of communication. The method is applied to a system in which a first terminal communicates with a second terminal, the first terminal is a terminal in a network constructed by a first NAT device, the second terminal is a terminal in a network constructed by a second NAT device, and the first NAT device is different from the second NAT device. The method realizes NAT traversal through bidirectional dynamic detection of TTL values of two ends of NAT traversal, so the problem of low NAT traversal efficiency is solved.

Description

technical field [0001] The present application relates to network address translation technology in the communication field, and in particular to a method, device and system for NAT traversal. Background technique [0002] In the field of real-time audio and video on a peer-to-peer (peer to peer, P2P) network, network address translation (network address translation, NAT) traversal is a very important technology. NAT traversal technology can enable clients to communicate directly with each other, thereby reducing the end-to-end delay, greatly reducing the pressure on the server and reducing its cost. [0003] NAT technology refers to the technology of converting internal network addresses to external network addresses. This technology can not only solve the problem of insufficient Internet protocol addresses (IP), but also effectively avoid attacks from outside the network, hide and Protect endpoints inside the network. [0004] The working process of NAT is mainly to real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
CPCH04L61/256H04L61/2514H04L61/2578H04L61/2575H04L61/4535H04L45/20
Inventor 陈才龙
Owner HUAWEI TECH CO LTD
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