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Method for mobile node's connection to virtual private network using mobile IP

A virtual private network and node technology, applied in wireless network protocols, bridge parts, data exchange through path configuration, etc., can solve problems such as high cost, network topology and increased complexity of access steps

Inactive Publication Date: 2008-03-26
KT FREETEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Therefore, many problems arise, such as increased complexity of network topology and access steps, high cost due to independent operation of HA and virtual private network gateways

Method used

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  • Method for mobile node's connection to virtual private network using mobile IP

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Embodiment Construction

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before the description, it should be understood that the terms used in the specification and appended claims should not be construed as limited to the ordinary and dictionary meanings, but should be based on the principle of allowing the inventor to properly define the terms for the best interpretation , interpreted based on meanings and concepts equivalent to the technical aspects of the present invention. Therefore, the description presented here is only for the purpose of illustrating the preferred embodiments and is not intended to limit the scope of the present invention, so it should be understood that other equivalent substitutions and modifications can be made without departing from the spirit and scope of the present invention.

[0026] FIG. 1 is a flow chart illustrating a method for connecting to a virtual private network using ...

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Abstract

A method for a mobile node's connection to a virtual private network using a mobile IP under a mobile environment is provided. According to this method, the mobile node firstly makes a mobile IP registration request message including VPN user authentication information and transmits the message to VPN gateway. Then, the VPN gateway reads the VPN user authentication information from the message and inquires a database in which VPN user authentication information is already stored, to verify a VPN access authority of the mobile node. If the access authority is verified, private IP is recorded in a response message to the mobile IP registration request message, and the response message is transmitted to the mobile node to assign the private IP. Accordingly, a VPN having low construction cost, simple topology, less network traffic and low workig loads on the mobile node and the network under a mobile environment can be constructed.

Description

technical field [0001] The invention relates to a connection with a virtual private network, in particular to a method for connecting to a virtual private network by using mobile IP in a mobile environment. Background technique [0002] A virtual private network is defined as a technology or a communication network that allows the construction of a private network using a public network such as the Internet. According to the public virtual private network connection method, an IP address is assigned to a terminal in a foreign network, the user VPN gateway performs user authentication, then assigns a private IP address, and then transmits or receives data packets using tunneling technology. [0003] At the same time, when the terminal accessing the virtual private network is a mobile node (for example, a mobile phone, a notebook or a PDA) that should ensure mobility, the mobile IP proposed by the IETF is usually used. If this mobile IP is adopted, data services can be provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04W80/04
CPCH04L63/0272H04L63/08H04W80/04H04L63/0892H04L63/0876E01D19/04
Inventor 陈圣一金洛浦白己真
Owner KT FREETEL CO LTD
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