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Configurable NAT equipment for implementing end-to-end communication and its data forwarding method

A data and equipment technology, applied in the field of configurable NAT equipment and its data forwarding, can solve the problems of complex conversion process and large traffic, and achieve the effect of reducing data flow and saving time

Inactive Publication Date: 2009-02-18
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of complex network communication conversion process and large traffic using NAT equipment, the present invention proposes a configurable NAT equipment for end-to-end communication and its data forwarding method

Method used

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  • Configurable NAT equipment for implementing end-to-end communication and its data forwarding method
  • Configurable NAT equipment for implementing end-to-end communication and its data forwarding method
  • Configurable NAT equipment for implementing end-to-end communication and its data forwarding method

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Embodiment Construction

[0041] A configurable NAT device for realizing peer-to-peer communication and a data forwarding method thereof provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] figure 1 Shown is a schematic diagram of a network structure cascaded through a NAT device. The NAT device has two network interfaces, an internal network interface facing the internal network and an external network interface facing the external network. At present, the NAT external network interface is generally bound to the global unified IP address in the public network; while the internal network interface is generally bound to the private network address specified in RFC1918. With the appearance of multi-layer NAT network, the external network interface can also be bound with the private network address stipulated in RFC1918. As shown in the figure, a private network B is connected to the public network A through a...

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Abstract

The invention discloses a configurable NAT for accomplishing end-to-end communication and its operation method comprising: network connection relation control matrix records connection relation of networks accessed by interface module; address switching mapping recording list records connection state of the interface module; interface module attribute list records network type connected with interface module and inner net address and outer net address used when the network converts address; interface module receives data from network or other interface module according to recording information and the status mark of matching relation, and completes address conversion and relay the data to other interface module or network accessed by present interface module. In the invention, data can reach any on communication node in three hops after one-time network address conversion, time for converting network address multi-time is saved, data stream is limited in configurable NAT equipment, data stream in network is reduced.

Description

technical field [0001] The present invention relates to the technical field of computer network communication, and more specifically, the present invention relates to a configurable NAT device for realizing end-to-end communication and a data forwarding method thereof. Background technique [0002] Network Address Translation (NAT) is an Internet Engineering Task Force (IETF) standard that allows an entire organization to use the same public IP address to appear on the Internet. (IP address) technology that translates into a legal public network IP address. Network Address Port Translation (NAPT) further develops the concept of "basic NAT" translation. When translating addresses, it also translates transport layer signs (such as TCP / UDP port numbers and ICMP query IDs), so that the transmission of multiple internal hosts The layer designation is multiplexed into a unique external address. NAPT enables a group of hosts to share a unique external address. In this application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/12
Inventor 傅川秦卓琼张国清
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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