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NAT traversal method and system

A technology of intranet machine and server, which is applied in the Internet field, can solve the problem of low success rate of symmetric NAT network penetration, and achieve the effect of improving the success rate of penetration

Active Publication Date: 2021-03-02
郑炳立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method aimed at solving the existing problem, that is, the penetration success rate in the symmetrical NAT network is low

Method used

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  • NAT traversal method and system
  • NAT traversal method and system

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Embodiment Construction

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention relates to the technical field of Internet, and provides an NAT traversal method, which comprises the following steps that: a first intranet machine and a second intranet machine respectively establish communication connection with a server; when the first intranet machine receives a penetration starting instruction sent by the server and communication information of the second intranet machine, a message is sent to a preset communication address through the first NAT gateway; when the second intranet machine receives a penetration starting instruction sent by the server and thecommunication information of the first intranet machine, a message is sent to a preset communication address through a second NAT gateway; the first intranet machine disconnects the communication connection with the server, and establishes the communication connection with the second intranet machine according to the communication information of the second intranet machine; and the second intranetmachine disconnects the communication connection with the server, and establishes the communication connection with the first intranet machine according to the communication information of the firstintranet machine. The invention further provides an NAT traversal system. By implementing the invention, the penetration success rate of the symmetric NAT network can be improved.

Description

technical field [0001] The invention relates to the technical field of the Internet, and in particular provides a NAT penetration method and system. Background technique [0002] NAT is the "Network Address Translation" technology (NAT for short), which allows an entire organization, such as a local area network, to appear on the Internet with a public IP address, and can translate internal private network addresses into legal network IP addresses. . When the internal node wants to communicate with the external network, the internal address is replaced by the public address through NAT technology, so that it can be used normally on the external public network. NAT technology can enable multiple computers to share the Internet connection, which solves the shortage of public IP addresses. The problem. Since NAT technology shields the internal network, all intranet computers are invisible to the public network, and intranet computer users will not be aware of the existence of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12
CPCH04L61/256
Inventor 郑炳立
Owner 郑炳立
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