Method of using SIP communicati protocal frame as mobile VPN

A communication protocol and mobile technology, applied in the field of mobile private virtual network proxy, can solve problems such as time delay of forwarding address, shortening of application layer load data, and consumption reduction efficiency
CN100423517CInactive Publication Date: 2008-10-01ZYXEL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZYXEL
Publication Date
2008-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The method for use in making a mobile node roaming at external network capable of safely communicating with the communication nodes in internal network comprises: setting a first SIP proxy server, an application layer gateway, a second SIP proxy server and an AAA server between the internal network and the external network; when the second SIP proxy server detects the mobile node is closing to the internal network, it modifies the data transmission direction of the communication node information packet, and transmits it to the application layer; the first SIP proxy server authenticates and authorizes the mobile node through the AAA server, and generates a negotiation key that is transmitted to the application gateway; finally the application gateway takes over the transmission between the mobile node and the communication node.
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Description

technical field

[0001] The present invention relates to a kind of method that uses SIP (Session Initiation Protocol) communication protocol framework as mobile private virtual network (VPN, Virtual Private Network) agent, especially about a kind of solution to Internet Engineering Task Force (Internet Engineering Task Force, IETF) defines a method for problems that mobile VPNs cannot solve. Background technique

[0002] A virtual private network (VPN) is a virtual network that can use a wide area network (such as the Internet) to establish a dedicated network channel between a remote user's computer and a server on a local network, providing the same security as in a closed private local area network. network protocol.

[0003] A VPN therefore has the following basic requirements in order to ensure security:

[0004] 1. User authentication: VPN must be able to verify user identity and strictly control that only registered and authorized users can log in.

[0005] 2. Addre...

Claims

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