CN103873444B - Method, the business switching device of outer network service are accessed when mobile terminal VPDN is online - Google Patents
Method, the business switching device of outer network service are accessed when mobile terminal VPDN is online Download PDFInfo
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- CN103873444B CN103873444B CN201210543769.9A CN201210543769A CN103873444B CN 103873444 B CN103873444 B CN 103873444B CN 201210543769 A CN201210543769 A CN 201210543769A CN 103873444 B CN103873444 B CN 103873444B
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Abstract
Method, business switching device and the VPDN of outer network service are accessed when online the invention discloses a kind of mobile terminal VPDN, when the business of mobile terminal accessing is business in VPDN net, business switching device is by the corresponding L2TP of business in the data forwarding from mobile terminal to the net with VPDN access servers LNS；When the business of mobile terminal accessing is business outside VPDN net, business switching device is sent to mobile terminal by the corresponding network of business outside the data forwarding from mobile terminal to the net with VPDN or device, and by the data of network or device return.Method, business switching device and the VPDN of the present invention, path is distinguished according to access service and pointed to and the corresponding access request of automatic transfer, realizes that mobile terminal accesses under the conditions of client's Intranet the purpose that can access outer net telecommunication service ability simultaneously in a manner of wireless VPDN.
Description
Technical field
The side of outer network service is accessed the present invention relates to VPDN technical fields, more particularly to when a kind of mobile terminal VPDN is online
Method and business switching device and VPDN.
Background technology
VPDN（Virtual Private Dial-up Networks：Virtual Private Dial-up Network）It is the one of vpn service
Kind, it is the Virtual Private Dialup Network business based on dial user.VPDN is to be based on dial-up access mobile data network (such as
EVDO, CDMA1x) Virtual Private Dialup Network business, extended to available for by cross-region group customer in-house network, VPN
On wireless terminal.
VPDN uses special network security and communication protocol, and enterprise can be made to establish relative peace on wireless public network
Full VPN.User can pass through public network, be carried out by the user network inside virtual escape way and user
Connection, and the user on public network can not then pass through tunnel to access the resource inside user network.VPDN tunnel protocols
Tri- kinds of PPTP, L2F and L2TP can be divided into, most popular at present is L2TP.
At present, the wireless VPDN customer sides access device system in existing VPDN business, such as LNS（L2TP Network
Service）Internal address of the meeting to access terminal distribution customer network side, and operator's self-operated business platform（Such as GPSone
Positioning, communication for coordination）It is deployed in outside client's Intranet.For client, to using VPDN business and be accessed outer in terminal simultaneously
For net as called telecommunications self-operated business to realize the switching of client's intranet and extranet, it is necessary to be dialled again by terminal, the switching time is longer
（More than 10 seconds）And manually operated excessively cumbersome specialty, therefore in practical application, terminal user in the case of using VPDN always not
Can be simultaneously using the outer network service including telecommunications self-operated business.
The content of the invention
In view of this, the invention solves a technical problem be to provide a kind of mobile terminal VPDN it is online when being capable of root
According to the method for the type classification access path and the outer network service of access of access service.
A kind of method that outer network service is accessed when mobile terminal VPDN is online, including：Business switching device is received from shifting
The data of dynamic terminal, and judge the type of the mobile terminal accessing business；When the business of the mobile terminal accessing is VPDN
Net in business when, the business switching device by the data forwarding from the mobile terminal to industry in the net of the VPDN
LNS corresponding to business；When the business of the mobile terminal accessing is business outside VPDN net, the business switching device will come from
The data forwarding of the mobile terminal is to network corresponding with business outside the net of the VPDN or device, and by the network or dress
The data for putting return are sent to the mobile terminal.
According to one embodiment of the method for the invention, further, the business switching device is established with LAC and LNS
L2TP Tunnel；Wherein, the data of mobile terminal are sent to the business switching device by LAC by L2TP Tunnel；When the shifting
When the business of dynamic terminal access is business in VPDN net, the business switching device leads to the data from the mobile terminal
Cross L2TP Tunnel and be forwarded to LNS corresponding with business in the net of the VPDN.
According to one embodiment of the method for the invention, further, LNS is distributed the mobile terminal in VPDN net
IP address, the mobile terminal access business in VPDN net using IP address in the net by the LNS.
According to one embodiment of the method for the invention, further, outside the business switching device and the VPDN
Network corresponding to business or device carry out routing iinformation interaction by bgp protocol；When the business of the mobile terminal accessing is
During the outer business of VPDN net, the business switching device is by IP in the VPDN nets of source address in the data from the mobile terminal
Address replaces with outer net IP address, and is forwarded to corresponding with business outside the net of the VPDN network or device.
According to one embodiment of the method for the invention, further, business switching device is received from mobile terminal
Data, the type of the mobile terminal accessing business is judged by parsing the purpose IP address in the data.
The invention solves a technical problem be to provide the business switching device of VPDN a kind of, can be according to accessing industry
The type classification forward-path of business.
A kind of Virtual Private Dial-up Network VPDN business switching device, including：Data receipt unit, for receiving from shifting
The data of dynamic terminal；Business judging unit, for judging the type of the mobile terminal accessing business；Data forwarding unit, use
In when the business of the mobile terminal accessing be VPDN net in business when, by the data forwarding from the mobile terminal to
LNS corresponding to business in the net of the VPDN；When the business of the mobile terminal accessing is business outside VPDN net, will come from
The data forwarding of the mobile terminal is to network corresponding with business outside the net of the VPDN or device, and by the network or dress
The data for putting return are sent to the mobile terminal.
According to one embodiment of the business switching device of the present invention, further, LAC passes through the data of mobile terminal
L2TP Tunnel is sent to the data receipt unit；When the business of the mobile terminal accessing is business in VPDN net, institute
Data forwarding unit is stated to be forwarded to the data from the mobile terminal and business in the net of the VPDN by L2TP Tunnel
Corresponding LNS；Wherein, the business switching device establishes L2TP Tunnel with LAC and LNS.
According to one embodiment of the business switching device of the present invention, further, LNS is distributed the mobile terminal
IP address in VPDN net, the mobile terminal access business in VPDN net using IP address in the net by the LNS.
According to the present invention business switching device one embodiment, further, outer net routing unit, for it is described
Network corresponding to business outside VPDN or device carry out routing iinformation interaction by bgp protocol；When the mobile terminal accessing
During the outer business of net that business is VPDN, the data forwarding unit is by the VPDN of source address in the data from the mobile terminal
IP address replaces with outer net IP address using NAT in net, and is forwarded to corresponding with business outside the net of the VPDN network or dress
Put.
According to one embodiment of the business switching device of the present invention, further, the data forwarding unit passes through solution
The purpose IP address in the data of mobile terminal is analysed, and judges the type of the mobile terminal accessing business.
A kind of VPDN, include VPDN as described above business switching device.
The method and business switching device of outer network service are accessed when the mobile terminal VPDN of the present invention is online, by accessing
Business switching device, the path of the newly-built business platform for pointing to client's outer net, according to access are established before VPDN LNS servers
Traffic differentiation path is pointed to and the corresponding access request of automatic transfer, realizes that mobile terminal accesses client's Intranet in a manner of wireless VPDN
Under the conditions of can access the purpose of outer net telecommunication service ability simultaneously.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 accesses the stream of one embodiment of the method for outer network service for the mobile terminal VPDN according to the present invention when online
Cheng Tu；
Fig. 2 accesses another embodiment of the method for outer network service for the mobile terminal VPDN according to the present invention when online
Sequential flow chart；
Fig. 3 is the schematic diagram according to one embodiment of the business interconnecting device of the present invention；
Fig. 4 is the schematic diagram of the one embodiment disposed in a network according to the business interconnecting device of the present invention.
Embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.Under
The accompanying drawing that face will be combined in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, and shows
So, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is all belonged to
In the scope of protection of the invention.
Fig. 1 accesses the stream of one embodiment of the method for outer network service for the mobile terminal VPDN according to the present invention when online
Cheng Tu.As shown in Figure 1：
Step 102, business switching device receives the data from mobile terminal, and judges the class of mobile terminal accessing business
Type；
Step 103, when the business of mobile terminal accessing is business in VPDN net, business switching device will come from movement
The data forwarding of terminal is to the corresponding LNS of business in the net with VPDN；
Step 104, when the business of mobile terminal accessing is business outside VPDN net, business switching device will come from movement
The data forwarding of terminal is to the corresponding network of business outside the net with VPDN or device, and the data that network or device are returned are sent
To mobile terminal, or, it is sent to other recipients, such as business platform of client's Intranet etc..
According to one embodiment of present invention, business switching device supports the L2TP Tunnel between LAC and LNS.LAC will be moved
The data of dynamic terminal are sent to business switching device by L2TP Tunnel.When the business of mobile terminal accessing is industry in VPDN net
During business, it is corresponding that the data from mobile terminal are forwarded to business in the net with VPDN by business switching device by L2TP Tunnel
LNS。
L2TP（The Tunneling Protocol of Layer 2, Layer 2 Tunneling Protocol）Agreement is provided to the ppp link number of plies
According to the passage of bag（Tunnel）Transmission is supported, it is allowed to which two layers of link end points and PPP sessions point are resident on different devices and adopted
Information exchange is carried out with packet network technology, so as to extend PPP models.
LAC represents L2TP Access Concentrator（L2TP Access Concentrator）, it is attached on exchange network
Equipment with PPP end systems and L2TP protocol handling capabilities.LAC is usually a network access server NAS, is mainly used in
Access service is provided the user by PSTN/ISDN networks.
LNS represents L2TP Network Server（L2TP Network Server）, it is to be used to handle L2TP on PPP end systems
The equipment of protocol server end part.LAC is located at LNS and far end system（Remote user and Yuan Di branches）Between, it is used for
The transmission information bag between LNS and far end system, being packaged simultaneously from the packet that far end system receives according to L2TP agreements
LNS is sent to, the packet received from LNS is decapsulated and is sent to far end system.
Locality connection or ppp link can be used between LAC and far end system, is usually ppp link in VPDN applications.
Opposite side end points of the LNS as L2TP Tunnel, it is LAC opposite equip., is patrolling by the PPP sessions of LAC progress tunnel transmissions
Collect termination end points.Multiple L2TP Tunnel can be established between with a pair of LAC and LNS, tunnel is by a control connection and one
Or multiple sessions（Session）Composition.
Remote system, such as mobile network, dial in LAC, and establishing passage to LNS initiations by Internet from LAC connects
Request.Mobile terminal address is distributed by LNS；Now LAC client directly can initiate passage connection request to LNS, without passing through again
One single LAC equipment.Now, the distribution of LAC customer address is completed by LNS.
LNS can be positioned over after the fire wall of enterprise network, it the address of remote subscriber can be carried out dynamic distribution and
Management, can support private address application.By the address that remote subscriber distributes be not Internet addresses but enterprises
Private address, so facilitate the management of address and security can be increased.
Fig. 2 accesses another embodiment of the method for outer network service for the mobile terminal VPDN according to the present invention when online
Sequential flow chart.As shown in Figure 2：
Step 201, the mobile terminal in mobile network dials in LAC；
Step 202, LAC transmits data to business switching device by VPDN passages；
Step 203, business switching device judges the type of mobile terminal accessing business；
Step 204, when business in the net that business is VPDN, i.e. the business of enterprise network etc., business switching device is by data
It is forwarded to the corresponding LNS of business in the net with VPDN；
Step 205, client traffic platform is accessed；
Step 206, when business outside the net that business is VPDN, business switching device is forwarded the data to outside the net with VPDN
The outer business platform of net corresponding to business；
Step 207, outer business platform backward reference result is netted；
Step 208, the data of return are sent to mobile terminal by business switching device, or, business switching device will return
The data returned are sent to client traffic platform.
According to one embodiment of present invention, LNS distributes mobile terminal IP address in VPDN net, and mobile terminal uses
IP address accesses business in VPDN net by LNS in net.
Business switching device network corresponding with the business outside VPDN or device by existing Routing Protocol, such as RIP,
The agreements such as OSPF, IS-IS, BGP, carry out routing iinformation interaction.
When the business of mobile terminal accessing is business outside VPDN net, business switching device is by the number from mobile terminal
Outer net IP address is replaced with according to IP address in the VPDN nets of middle source address, and is forwarded to the corresponding network of business outside the net with VPDN
Or device.
According to one embodiment of present invention, business switching device receives the data from mobile terminal, by parsing number
Purpose IP address in judges the type of mobile terminal accessing business.Transmitted in L2TP Tunnel for PPP bags, pass through parsing
Purpose IP address in PPP bags, determine whether to net outer business by purpose IP address or purpose IP address+port numbers.
Fig. 3 is the schematic diagram according to one embodiment of the business interconnecting device of the present invention.As shown in Figure 3：VPDN industry
Business switching device 31, including：Data receipt unit 311 and data forwarding unit 312 and business judging unit 314.
Data receipt unit 311 receives the data from mobile terminal.
Business judging unit 314 judges the type of mobile terminal accessing business；When the business of mobile terminal accessing is VPDN
Net in business when, data forwarding unit 312 is corresponding by business in the data forwarding from mobile terminal to the net with VPDN
LNS；When the business of mobile terminal accessing is business outside VPDN net, data forwarding unit 312 is by the number from mobile terminal
According to the corresponding network of the business outside the net with VPDN that is forwarded to or device, and the data that network or device are returned be sent to it is mobile eventually
End.
According to one embodiment of present invention, the data of mobile terminal are sent to data receiver by LAC by L2TP Tunnel
Unit；When the business of mobile terminal accessing is business in VPDN net, data forwarding unit 312 is by the number from mobile terminal
The corresponding LNS of business in the net with VPDN is forwarded to according to by L2TP Tunnel；Wherein, business switching device support LAC and LNS it
Between the L2TP Tunnel established.
According to one embodiment of present invention, LNS distributes mobile terminal IP address in VPDN net, and mobile terminal uses
IP address accesses business in VPDN net by LNS in net.
According to one embodiment of present invention, the network corresponding with the business outside VPDN of outer net routing unit 313 or device
Routing iinformation interaction is carried out by bgp protocol；When the business of mobile terminal accessing is business outside VPDN net, data forwarding list
IP address in the VPDN of source address in the data of mobile terminal net is replaced with outer net IP address by member 312 using NAT,
And it is forwarded to the corresponding network of business outside the net with VPDN or device.
According to one embodiment of present invention, the purpose in data of the business judging unit 314 by parsing mobile terminal
IP address or purpose IP address+port numbers judge the type of mobile terminal accessing business.
Fig. 4 is the schematic diagram of the one embodiment disposed in a network according to the business interconnecting device of the present invention.Such as Fig. 4 institutes
Show：Business switching device is established before VPDN LNS servers are accessed, the newly-built telecommunications self-operated business for pointing to client's outer net is put down
The path of platform, path is distinguished according to access service and points to the simultaneously corresponding access request of automatic transfer, realizes mobile terminal with wireless
VPDN modes access under the conditions of client's Intranet the purpose that can access outer net telecommunication service ability simultaneously.
The business switching device established between LNS and VPDN passages possesses the VPDN passages of connection CDMA data networks, makes
Outer net self-operated business is connected with bgp protocol.If desired terminal or Client application access outer network service, then business switching device obtains
After request, indicated according to access service（Eg. IP, IP+ port of mesh）Access target is distinguished, utilizes NAT（Network address translation）
Complete intranet and extranet address conversion and outer net telecommunications self-operated business platform is forwarded to by C interface, complete interaction.
VPDN business normal dialing is moved through to LNS, LNS is handset allocation client Intranet VPDN addresses.Business is transferred
The purpose that device can access according to user indicates to be pointed to distinguish the business, if outer net is accessed, such as telecommunications self-operated business,
Then it is automatically forwarded to self-operated business platform.Result is returned after outer net self-operated business platform response and processing business access request
Connection device is turned round, switching device is transferred to correspondingly received end after receiving data.
According to one embodiment of present invention, a kind of VPDN includes the business switching device of VPDN as above.
Method, business switching device and the VPDN of outer network service are accessed when the mobile terminal VPDN of the present invention is online, according to
Access service distinguishes path and points to the simultaneously corresponding access request of automatic transfer, realizes that mobile terminal accesses client in a manner of wireless VPDN
The purpose of outer net telecommunication service ability can be accessed under the conditions of Intranet simultaneously.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for method is only
Order described in detail above is not limited in order to illustrate, the step of method of the invention, is especially said unless otherwise
It is bright.In addition, in certain embodiments, the present invention can be also embodied as recording program in the recording medium, these programs include
For realizing the machine readable instructions of the method according to the invention.Thus, the present invention also covering storage is used to perform according to this hair
The recording medium of the program of bright method.
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (9)
- The method of outer network service is accessed when 1. a kind of mobile terminal Virtual Private Dial-up Network VPDN is online, it is characterised in that including：Business switching device receives the data from mobile terminal, and judges the type of the mobile terminal accessing business；When the business of the mobile terminal accessing is business in VPDN net, the business switching device will come from the movement The data forwarding of terminal accesses server LNS to L2TP corresponding with business in the net of the VPDN；LNS is to the mobile terminal Distribute IP address in VPDN net；The mobile terminal is accessed using IP address in the net by the LNS in VPDN net Business；When the business of the mobile terminal accessing is business outside VPDN net, the business switching device will come from the movement IP address replaces with outer net IP address in the VPDN nets of source address in the data of terminal, and is forwarded to the net field operation with the VPDN Network corresponding to business or device, and the data that the network or device are returned are sent to the mobile terminal.
- 2. the method as described in claim 1, it is characterised in that：The business switching device establishes L2TP Tunnel with L2TP Access Concentrator LAC and LNS；Wherein, the data of mobile terminal are sent to the business switching device by LAC by L2TP Tunnel；When the business of the mobile terminal accessing is business in VPDN net, the business switching device will come from the movement The data of terminal are forwarded to LNS corresponding with business in the net of the VPDN by L2TP Tunnel.
- 3. method as claimed in claim 2, it is characterised in that：The business switching device carries out routing iinformation friendship with the network outside the VPDN or device by BGP or ospf protocol Mutually.
- 4. the method as described in claim 1, it is characterised in that：Business switching device receives the data from mobile terminal, and the purpose IP address in the data judges the movement The type of terminal access business.
- A kind of 5. business switching device of VPDN, it is characterised in that including：Data receipt unit, for receiving the data from mobile terminal；Business judging unit, for judging the type of the mobile terminal accessing business；Data forwarding unit, for when business in the net that the business of the mobile terminal accessing is VPDN, the shifting will to be come from The data forwarding of dynamic terminal is to LNS corresponding with business in the net of the VPDN；LNS distributes the mobile terminal VPDN net Interior IP address；The mobile terminal accesses business in VPDN net using IP address in the net by the LNS；When the shifting When the business of dynamic terminal access is business outside VPDN net, by the VPDN nets of source address in the data from the mobile terminal IP address replaces with outer net IP address, and is forwarded to corresponding with business outside the net of the VPDN network or device, and by described in The data that network or device return are sent to the mobile terminal.
- 6. business switching device as claimed in claim 5, it is characterised in that：The data of mobile terminal are sent to the data receipt unit by LAC by L2TP Tunnel；When the business of the mobile terminal accessing is business in VPDN net, the data forwarding unit will come from the movement The data of terminal are forwarded to LNS corresponding with business in the net of the VPDN by L2TP Tunnel；Wherein, the business switching device establishes L2TP Tunnel with LAC and LNS.
- 7. business switching device as claimed in claim 6, it is characterised in that also include：Outer net routing unit, for carrying out route letter by bgp protocol or ospf protocol with the network outside the VPDN or device Breath interaction.
- 8. business switching device as claimed in claim 5, it is characterised in that：Purpose IP address in the data of the business judging unit parsing mobile terminal, judges institute according to the purpose IP address State the type of mobile terminal accessing business.
- A kind of 9. VPDN, it is characterised in that：Include the business switching device of the VPDN as described in claim 5 to 8 any one.
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| CN201210543769.9A CN103873444B (en) | 2012-12-14 | 2012-12-14 | Method, the business switching device of outer network service are accessed when mobile terminal VPDN is online |
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| CN105591995B (en) * | 2014-10-20 | 2019-09-27 | 中国电信股份有限公司 | The method and system of sensor network and internet communication |
| CN105636151B (en) * | 2015-06-29 | 2017-08-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method for connecting network and electronic equipment |
| CN107171855A (en) * | 2017-06-19 | 2017-09-15 | 淄博掌游网络科技有限公司 | A kind of information security managing and control system and information security management and control method |
| CN107634884B (en) * | 2017-08-28 | 2020-12-04 | 深信服科技股份有限公司 | Cloud networking behavior management system and method based on virtual private dial-up network |
| CN109688054B (en) * | 2017-10-18 | 2022-02-15 | 中国电信股份有限公司 | VPDN user internet surfing method and PGW |
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| US7117526B1 (en) * | 1999-10-22 | 2006-10-03 | Nomadix, Inc. | Method and apparatus for establishing dynamic tunnel access sessions in a communication network |
| US7489700B2 (en) * | 2002-11-20 | 2009-02-10 | Hitachi Communication Technologies, Ltd. | Virtual access router |
| CN102130818B (en) * | 2010-01-20 | 2014-03-19 | 杭州华三通信技术有限公司 | Network access server accessing method and network access server |
| CN101764757B (en) * | 2010-01-20 | 2012-04-25 | 华为技术有限公司 | Method, device and system for content accessing |
| CN102215154B (en) * | 2010-04-06 | 2016-05-25 | 中兴通讯股份有限公司 | The access control method of Network and terminal |
| CN102546350B (en) * | 2012-02-10 | 2014-12-10 | 浙江宇视科技有限公司 | Method and device for saving WAN (wide area network) bandwidth in IP (internet protocol) monitoring system |
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