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Method and system for binding router interface supported by static state PAT

A router and static technology, applied in the field of data communication, can solve problems such as inability to reuse, and achieve the effect of simple implementation, reduced cost, and improved flexibility

Inactive Publication Date: 2009-01-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method and system for static PAT to support the binding of router interfaces. The problem of the interface network address improves the utilization rate of the interface network address

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  • Method and system for binding router interface supported by static state PAT
  • Method and system for binding router interface supported by static state PAT
  • Method and system for binding router interface supported by static state PAT

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0040] Such as figure 1 Shown, is the method flowchart of the present invention, comprises the following steps:

[0041] S102: Configure the router NAT inbound interface, NAT outbound interface and bind the static PAT rule of the NAT outbound interface;

[0042]S104: According to the network address obtained by the NAT outgoing interface of the bound router, establish a network address-port mapping relationship that conforms to the static PAT rule bound to the NAT outgoing interface of the router; the network address-port mapping relationship is a private network IP The mapping relationship between the address, port and the IP address and port obtained by the route...

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Abstract

The invention relates to a method and a system and binding a router interface by the support of a static PAT. The method comprises the following steps that: firstly, a static PAT rule for binding the NAT outgoing interface of the router is configured; secondly, the network address interface mapping relationship in accordance with the static PAT rule is established according to the network address acquired from the outgoing interface; when the outgoing interface receives a TCP / UDP message of which the destination address is the respective interface network address, the network address interface mapping relationship is searched by the destination address and the destination port of the message, if yes, the network address port conversion is performed on the message according to the network address port mapping relationship; and otherwise, the message is taken as the local message of the router. The invention also provides a system for realizing the method. The method and the system can save the application for the fixed Internet IP address, reduce the networking fee, improve the flexibility of using the NAT networking, and have easy realization.

Description

technical field [0001] The present invention relates to the field of data communication, and more specifically relates to a static PAT (Port Address Translation, port address translation) method and system for supporting binding of router interfaces. Background technique [0002] Currently, with the rapid development of networks, IPv4 (Internet Protocol Version 4, Internet Protocol Version 4) addresses are facing the problem of address exhaustion. And NAT (Network Address Translation, Network Address Translation) can help alleviate the problem of IPv4 address exhaustion. NAT technology is an address mapping technology, which is usually used when a host with a private IP address in a subdomain accesses an external host to map the private IP address of the host in the subdomain to a uniquely identifiable external public network (Internet) IP address; at the same time , mapping the public IP address returned by the external host to the internal host back to the private IP addr...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/24
Inventor 陈尔严武利明缪武杰
Owner ZTE CORP