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User-oriented network topological hiddening method in internetwork protocol multi-media subsystem

A multimedia subsystem and Internet protocol technology, applied in the field of network security, can solve problems such as leakage of network topology information, achieve the effect of not increasing system processing capacity, improving reliability, and strengthening security

Inactive Publication Date: 2007-01-03
HUAWEI TECH CO LTD
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Problems solved by technology

However, for user terminals (UEs) with programmable capabilities, there is currently no solution for how the IMS performs user-oriented network topology hiding. That is, according to the existing technology, the P-CSCF directly sends text SIP messages to the UE. The clear text in the header field gives the SIP network routing information, including the address information of entities such as S-CSCF and AS, etc. For the UE with intelligent processing functions, it is possible to obtain the IMS network topology information based on these information
[0015] In practical applications, the above solution has the following problems: UE can obtain the topology information of the IMS network from many header fields of the SIP message during the communication process, which makes the address information of many core network elements of the IMS such as S-CSCF, AS, etc. exposed directly to users
[0016] The main reason for this situation is that the P-CSCF entity that directly interacts with the UE in the IMS session layer directly sends plaintext SIP messages to the UE, and these messages contain routing-related header fields, thereby leaking network topology information

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[0058] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] The present invention proposes that the P-CSCF completes the concept of hiding the network topology for the user, and the P-CSCF shields the routing-related header field that can expose the topology information in the request / response message sent to the UE, and sends it to the P-CSCF from the UE. In the response / request message, the P-CSCF restores the masked route-related headers before forwarding them, so that the normal SIP routes are not affected and the UE-oriented network topology can be hidden.

[0060] Therefore, the present invention provides a user-oriented network topology hiding method in an IMS network. The key steps include: P-CSCF shields the routing-related header field in the SIP message sent to the UE; P-CSCF restores the route in the SIP ...

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Abstract

A network topology hiding method of user-oriented in internetwork protocol multimedia subsystem includes realizing network route information shield of UE on direct interaction point P-CSCF of IMS switched in by UE to let UE not be able to know network topology information through route correlation head domain of SIP message for realizing network topology hide of user- oriented.

Description

technical field [0001] The invention relates to the network security technology of the Internet Protocol Multimedia Subsystem, in particular to a user-oriented network topology hiding method in the Internet Protocol Multimedia Subsystem. Background technique [0002] The Internet Protocol Multimedia Subsystem (IP Multimedia Subsystem, referred to as "IMS") is the third generation mobile communication partnership project (3rd Generation Partnership Project, referred to as "3GPP") R5 stage proposed to provide Internet Protocol (Internet Protocol, referred to as "IP") ) subsystem of multimedia services. It uses the packet domain as the bearer channel for upper-layer control signaling and media transmission, and introduces Session Initial Protocol (SIP) as a service control protocol, taking advantage of the characteristics of SIP's simplicity, easy expansion, and convenient media combination. Providing rich multimedia services by separating service control from bearer control i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 赵建国
Owner HUAWEI TECH CO LTD
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