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Access method employing network address translation (NAT) device for supporting multi-networking and device thereof

A device and networking technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as solutions for multiple networking of NAT devices that have not been given

Inactive Publication Date: 2009-12-09
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] As the requirements for networking applications are getting higher and higher, the same NAT device is required to support multiple networking, but the existing technology does not provide a specific solution for how the NAT device supports multiple networking

Method used

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  • Access method employing network address translation (NAT) device for supporting multi-networking and device thereof
  • Access method employing network address translation (NAT) device for supporting multi-networking and device thereof
  • Access method employing network address translation (NAT) device for supporting multi-networking and device thereof

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Embodiment Construction

[0076] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0077] image 3 When the NAT device provided by the embodiment of the present invention supports multiple networking, the flow chart of the method for the private network host to access the public network server, as shown in image 3 As shown, the specific steps are as follows:

[0078] Step 301: Configure the corresponding relationship between the interface identifier of each public network side interface of the device, the networking topology type identifier supported by the interface, and the NAT rule of the interface on the NAT device.

[0079] In the present invention, for a NAT device, the NAT device can support different networking topology types at different times, that is, at a certain moment, the NAT device can support networking topology type A, and at another moment, the NAT The device supports networking topology type B...

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Abstract

The invention discloses an access method employing network address translation (NAT) device for supporting multi-networking and a device thereof. The method comprises the following steps: the NAT device records the networking topological type and NAT rules of an side interface on each public-network side of the device; the NAT device receives a message sent from a host computer in a private network to a server in a public network, confirms the outgoing interface of the message and forwards the message according to the networking topological type and NAT rules of the side interface. The invention realizes the access between the private network and the public network by adopting the NAT device to support the multi-networking.

Description

technical field [0001] The invention relates to the technical field of network address translation, in particular to an access method for network address translation equipment supporting multiple networking and the network address translation equipment. Background technique [0002] With the rapid development of the Internet, IPV4 address resources are increasingly exhausted. In order to make full use of IPV4 addresses, Network Address Translation (NAT, Network Address Translation) technology has emerged as the times require. NAT technology allows users in the private network to use their own private network address when forming a network. The access inside the private network directly uses the private network address. When accessing the public network, it is converted into a public network address through NAT technology to access the Internet. One or more public networks The address can fully meet the needs of a large number of internal visits and a small amount of external...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/12H04L45/74
Inventor 罗琳
Owner NEW H3C TECH CO LTD
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