CN107294831A - Address distribution method and device - Google Patents
Address distribution method and device Download PDFInfo
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- CN107294831A CN107294831A CN201710510055.0A CN201710510055A CN107294831A CN 107294831 A CN107294831 A CN 107294831A CN 201710510055 A CN201710510055 A CN 201710510055A CN 107294831 A CN107294831 A CN 107294831A
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- client
- address
- link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention is a kind of address distribution method and device, and applied to the network equipment, methods described includes：Link is set up with client；The client is authenticated using point-to-point protocol, the identity information of the client is obtained in the authentication information sent from the client；It is that the client distributes corresponding IP address according to the identity information, so that the client is communicated by the IP address with the network equipment.In this way, by Extensible Authentication Protocol, the client that can be realized in the case where not increasing extra equipment as access distributes the function of fixed ip address, increases the security and ease of manageability of remote access network.
Description
Technical field
The present invention relates to network communication technology field, in particular to a kind of address distribution method and device.
Background technology
With the development of the communication technology, network size is increasing, and function is also more, for safety and is easily managed, right
Network carries out certain division, for example, the division of public network and private network.In order to ensure the safety of private data resource,
Public network is not opened private network (such as Intranet).Private network typically has certain territory restriction,
User is when needing to remotely access to private network from public network, it is necessary to use such as virtual channel technology, such as L2TP
(Layer 2Tunnel Protocol, Level 2 Tunnel Protocol).When by virtual channel accessing private network, for safety
Audit and be easy to management, it is necessary to be that user distributes one-to-one IP address according to user identity., it is necessary to increase in existing method
Extra AAA (Authentication, Authorization, Accounting, audit, authorize, charging) server realizes
The certification of user identity simultaneously distributes IP address, result in the increase of cost, is difficult to realize.
The content of the invention
, should it is an object of the invention to provide a kind of address distribution method in order to overcome above-mentioned deficiency of the prior art
For the network equipment, methods described includes：
Link is set up with client；
The client is authenticated using point-to-point protocol, being obtained in the authentication information sent from the client should
The identity information of client；
It is that the client distributes corresponding IP address according to the identity information, so that the client passes through the IP address
Communicated with the network equipment.
Alternatively, in the above-mentioned methods, the step of described and client sets up link, including：
Link is set up by virtual channel and the client.
Alternatively, in the above-mentioned methods, described is L2TP Network Server (L2TP Network Server, LNS), institute
Stating client includes L2TP Access Concentrator (L2TP Access Concentrator, LAC)；It is described to pass through virtual channel and institute
The step of client sets up link is stated, including：
The tunnel connection request that client is sent is received, L2TP Tunnel and session are set up with the client；
Link is set up by the L2TP Tunnel and the client.
Alternatively, in the above-mentioned methods, the network equipment is LNS, and the client accesses LAC；It is described by virtual
The step of link is set up in tunnel with the client, including：
The tunnel connection request that LAC is sent is received, L2TP Tunnel and session are set up with the LAC；
Link is set up with the client by the LAC by the L2TP Tunnel.
Alternatively, in the above-mentioned methods, the network equipment is with being stored with the IP that has been bound with the identity information of client
Location；Described is that the client distributes corresponding IP address step according to the identity information, including：
According to the identity information of the client, search whether there is the IP address bound with the identity information；
When finding the IP address bound with the identity information, the IP address is distributed into the client；
When not finding the IP address bound with the identity information, at available IP section, interior to randomly select one unbound
IP distribute to the client.
The present invention also provides a kind of address distributing device, and applied to the network equipment, described device includes：
Link establishment module, for setting up link with client；
Authentication module, for being authenticated using point-to-point protocol to the client, from recognizing that the client is sent
The identity information of the client is obtained in card information；
Address assignment module, for being that the client distributes corresponding IP address according to the identity information, so that described
Client is communicated by the IP address with the network equipment.
Alternatively, in said apparatus, the link establishment module sets up the mode of link with client, including：
Link is set up by virtual channel and the client.
Alternatively, in said apparatus, the network equipment is LNS, and the client includes LAC；The link establishment
Module by way of virtual channel and the client set up link, including：
The tunnel connection request that client is sent is received, L2TP Tunnel and session are set up with the client；
Link is set up by the L2TP Tunnel and the client.
Alternatively, in said apparatus, the network equipment is LNS, and the client accesses LAC；The link establishment
Module by way of virtual channel and the client set up link, including：
The tunnel connection request that LAC is sent is received, L2TP Tunnel and session are set up with the LAC；
Link is set up with the client by the L2TP Tunnel and the LAC.
Alternatively, in said apparatus, the network equipment is with being stored with the IP that has been bound with the identity information of client
Location；The address assignment module includes：
Submodule is searched, for the identity information according to the client, searches whether to exist and is bound with the identity information
IP address；
First distribution sub module, for when finding the IP address bound with the identity information, by the IP address point
Client described in dispensing；
Second distribution sub module, for when not finding the IP address bound with the identity information, in available IP
A unbound IP, which is randomly selected, in section distributes to the client.
In terms of existing technologies, the invention has the advantages that：
Address distribution method and device that the present invention is provided, by after client sets up link, using point-to-point protocol
The identity information of client terminal is obtained, is that the client distributes corresponding IP address according to the identity information.In this way, by can
Extensible Authentication Protocol, can realize in the case where not increasing extra equipment and distribute fixed ip address for the client of access
Function, increase remote access network security and ease of manageability.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the step schematic flow sheet of address distribution method provided in an embodiment of the present invention；
Fig. 2 is spontaneous tunnel applications schematic diagram of a scenario provided in an embodiment of the present invention；
Fig. 3 is Compulsory Tunnel application scenarios schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of address distributing device provided in an embodiment of the present invention.
Icon：The 100- network equipments；110- address distributing devices；111- link establishment modules；112- authentication modules；113-
Address assignment module；200- clients；300-LAC.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
Fig. 1 is refer to, Fig. 1 is a kind of flow chart of address distribution method, and methods described is applied to the network equipment, below will
Methods described is described in detail including each step.
Step S110, link is set up with client.
In the present embodiment, the network equipment uses point-to-point protocol (Point to Point with the client
Protocol, PPP) communication, link is set up by virtual channel and client.
Virtual channel is a kind of by way of Internet infrastructure transmits data between networks, works in data
Link layer.The data transmitted using virtual channel can be the data frame or bag of different agreement, and tunnel protocol is by different agreement
Data frame or bag are Resealed to be sent in new packet header, and packed packet is between two end points in tunnel by public
Internet is route, once reaching internet destination, data will be depacketized and be forwarded to final destination.
In whole transmittance process, the logical path that packed packet is passed through when being transmitted on public internet network claims
For tunnel.In the present embodiment, the virtual channel can be L2TP Tunnel, and L2TP is a kind of Internet tunnels of industrial standard
Road agreement, it is desirable to the point-to-point connection of packet-oriented.
Alternatively, Fig. 2 is refer to, in an embodiment of the present embodiment, the network equipment 100 can be LNS,
LNS is the server-side devices for being used to handle L2TP agreements for supporting PPP certifications.The client 200 can include LAC,
LAC is to be attached to the client device that PPP certifications and L2TP protocol handling capabilities are supported on exchange network.
In the present embodiment, L2TP uses the form in spontaneous tunnel.The network equipment 100 receives client 200 and sent out
The tunnel connection request sent, L2TP Tunnel and session are set up with the client 200.It is described after L2TP Tunnel and session establishment
The network equipment 100 carries out LCP (Link Control by the L2TP Tunnel and the client 200
Protocol, LCP) consult, and set up PPP (Point to Point Protocol, PPP) tunnel.
Alternatively, Fig. 3 is refer to, in the another embodiment of the present embodiment, the network equipment 100 can be
LNS, the client 200 can be communicated with access device LAC300 by way of remote dial incoming call, for example, by described
Client 200 can dial in LAC300 with modes such as 3G, 4G, PPPoE or ISDN.
In the present embodiment, L2TP uses the form of Compulsory Tunnel.The remote dial of client 200 is dialled in after LAC300,
The network equipment 100 receives the tunnel connection request that LAC300 is sent, and L2TP Tunnel and session are set up with LAC300.The net
Network equipment 100 sets up session by the LAC300 by the L2TP Tunnel with the client 200, then with the client
End 200 carries out LCP negotiations.The network equipment 100 sets up PPP by the L2TP Tunnel with LAC300 and the client 200
Tunnel.
In the present embodiment, the PPP certifications between the client 200 and the network equipment 100 can use password authentication
Agreement (Password Authentication Protocol, PAP), PAP is a kind of link control association that ppp protocol is concentrated
View, is mainly shaken hands by using 2 times and provides a kind of straightforward procedure for setting up certification of reciprocity node, this is built upon initial chain
On the basis of road is determined.Challenge handshake agreement (Challenge Handshake Authentication can also be used
Protocol, CHAP), CHAP can by the identity of the periodic verification opposite end of shaking hands for 3 times, can when initial link circuit is set up, it is complete
Cheng Shi, repeat after link establishment.
Step S120, is authenticated using point-to-point protocol to the client 200, is sent from the client 200
Authentication information in obtain the identity information of the client 200.
The network equipment 100 is authenticated using CHAP the or PAP agreements of ppp protocol to the client 200.
The client 200, which sends authentication information, in the present embodiment, when carrying out CHAP or pap authentication includes the client 200
Identity information, for example, the user's name that the identity information of the client 200 can be set using the client 200
Username。
Based on above-mentioned design, the method that the present embodiment is provided is based on existing ppp protocol and carries out information transfer, and passes through
CHAP or pap authentication obtain the identity information of client 200, it is not necessary to additional modifications message field (MFLD), it is easy to accomplish.
Step S130, is that the client 200 distributes corresponding IP address according to the identity information, so that the client
200 are communicated by the IP address with the network equipment 100.
In the present embodiment, the network equipment 100 is with being stored with the IP that has been bound with the identity information of client 200
Location, the identity information of registered client 200 and the binding corresponding table of IP address for example, configuration is stored with.
The network equipment 100 is searched whether to exist and tied up with the identity information according to the identity information of the client 200
Fixed IP address.
When finding the IP address bound with the identity information, the IP address is distributed into the client 200, institute
Client 200 is stated to be communicated with the network equipment 100 by the IP address.
When not finding the IP address bound with the identity information, randomly select a unbound IP and distribute to the visitor
Family end 200.
Alternatively, the network equipment 100 randomly selects a unbound IP address and the visitor in available IP sections
Family end 200 carries out IP negotiations.For example, the available same IP address section of the network equipment 100 includes 254 IP address, its
In 10 IP address be the IP address bound, then randomly select one in remaining 244 IP address in the network equipment 100
It is individual to carry out IP negotiations with the client 200.
The method provided based on above-mentioned design, the present embodiment, is realized and IP is fixed according to the identity information of client 200
The function of address distribution, improves the security and ease of manageability of remote access network.And serviced without extra AAA is increased
Device, has saved cost.
Fig. 4 is refer to, the present embodiment also provides a kind of address distributing device 110, applied to the network equipment 100, the dress
Put including link establishment module 111, authentication module 112 and address assignment module 113.
The link establishment module 111, for setting up link with client 200.
In the present embodiment, the link establishment module 111 can be used for performing the step S110 shown in Fig. 1, on the chain
The specific descriptions that module 111 is set up on road can join the description to the step S110.
Further, in the present embodiment, the link establishment module 111 passes through virtual channel and the client 200
Set up link.
Alternatively, referring once again to Fig. 2, in an embodiment of the present embodiment, the network equipment 100 is LNS,
The client 200 includes LAC.The link establishment module 111 sets up link by virtual channel and the client 200
Mode, including：
The tunnel connection request that client 200 is sent is received, L2TP Tunnel and session are set up with the client 200.
Link is set up by the L2TP Tunnel and the client 200.
Alternatively, referring once again to Fig. 3, in the another embodiment of the present embodiment, the network equipment 100 is
LNS, the client 200 accesses LAC300；The link establishment module 111 is built by virtual channel with the client 200
The mode of vertical link, including：
The tunnel connection request that LAC300 is sent is received, L2TP Tunnel and session are set up with the LAC300.
Link is set up with the client 200 by the L2TP Tunnel and the LAC300.
The authentication module 112, for being authenticated using point-to-point protocol to the client 200, from the client
The identity information of the client 200 is obtained in the authentication information that end 200 is sent.
In the present embodiment, the authentication module 112 can be used for performing the step S120 shown in Fig. 1, on the certification mould
The specific descriptions of block 112 can join the description to the step S120.
The address assignment module 113, for according to the identity information be the client 200 with distributing corresponding IP
Location, so that the client 200 is communicated by the IP address with the network equipment 100.
In the present embodiment, the address assignment module 113 can be used for performing the step S130 shown in Fig. 1, on described
The specific descriptions of location distribute module 113 can join the description to the step S130.
Further, in the present embodiment, the identity information that the network equipment 100 is stored with client 200 is tied up
Fixed IP address.The address assignment module 113 includes：
Submodule is searched, for the identity information according to the client 200, searches whether to exist and is tied up with the identity information
Fixed IP address；
First distribution sub module, for when finding the IP address bound with the identity information, by the IP address point
Client 200 described in dispensing carries out ipcp negotiation.IPCP is used for the LCP for setting up, configuring and detecting data link connection, and is used for
Set up and configure the NCP protocol suites of heterogeneous networks layer protocol.
Second distribution sub module, for when not finding the IP address bound with the identity information, randomly selecting one
Unbound IP distributes to the client 200 and carries out ipcp negotiation.
Further, in the present embodiment, second distribution sub module randomly selects one in available IP sections and not tied up
Fixed IP address carries out IP negotiations with the client 200.
In summary, the present invention is provided address distribution method and device, by after client 200 sets up link, adopting
The identity information of client terminal is obtained with point-to-point protocol, is that the client 200 distributes corresponding IP according to the identity information
Address.In this way, by Extensible Authentication Protocol, the client for access can be realized in the case where not increasing extra equipment
The function of fixed ip address is distributed at end 200, increases the security and ease of manageability of remote access network.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of address distribution method, applied to the network equipment, it is characterised in that methods described includes：
Link is set up with client；
The client is authenticated using point-to-point protocol, the client is obtained in the authentication information sent from the client
The identity information at end；
It is that the client distributes corresponding IP address according to the identity information, so that the client passes through the IP address and institute
The network equipment is stated to be communicated.
2. according to the method described in claim 1, it is characterised in that described the step of set up link with client, including：
Link is set up by virtual channel and the client.
3. method according to claim 2, it is characterised in that the network equipment is L2TP Network Server, the visitor
Family end includes L2TP Access Concentrator；It is described the step of set up link by virtual channel and the client, including：
The tunnel connection request that client is sent is received, L2TP Tunnel and session are set up with the client；
Link is set up by the L2TP Tunnel and the client.
4. method according to claim 2, it is characterised in that the network equipment is L2TP Network Server, the visitor
Family is terminated into L2TP Access Concentrator；The L2TP Network Server sets up the step of link by virtual channel and the client
Suddenly, including：
The tunnel connection request that L2TP Access Concentrator is sent is received, L2TP Tunnel and meeting are set up with the L2TP Access Concentrator
Words；
Link is set up by the L2TP Access Concentrator and the client by the L2TP Tunnel.
5. according to the method described in claim 1, it is characterised in that the identity that the network equipment is stored with client is believed
Cease the IP address of binding；Described is that the client distributes corresponding IP address step according to the identity information, including：
According to the identity information of the client, search whether there is the IP address bound with the identity information；
When finding the IP address bound with the identity information, the IP address is distributed into the client；
When not finding the IP address bound with the identity information, a unbound IP is randomly selected in available IP sections
Distribute to the client.
6. a kind of address distributing device, applied to the network equipment, it is characterised in that described device includes：
Link establishment module, for setting up link with client；
Authentication module, for being authenticated using point-to-point protocol to the client, the certification letter sent from the client
The identity information of the client is obtained in breath；
Address assignment module, for being that the client distributes corresponding IP address according to the identity information, so that the client
End is communicated by the IP address with the network equipment.
7. device according to claim 6, it is characterised in that the link establishment module sets up the side of link with client
Formula, including：
Link is set up by virtual channel and the client.
8. device according to claim 7, it is characterised in that the network equipment is L2TP Network Server, the visitor
Family end includes L2TP Access Concentrator；The link establishment module sets up the side of link by virtual channel and the client
Formula, including：
The tunnel connection request that client is sent is received, L2TP Tunnel is set up with the client；
Link is set up by the L2TP Tunnel and the client.
9. device according to claim 7, it is characterised in that the network equipment is L2TP Network Server, the visitor
Family is terminated into L2TP Access Concentrator；The link establishment module sets up the side of link by virtual channel and the client
Formula, including：
The tunnel connection request that L2TP Access Concentrator is sent is received, L2TP Tunnel and meeting are set up with the L2TP Access Concentrator
Words；
Link is set up with the client by the L2TP Tunnel and the L2TP Access Concentrator.
10. device according to claim 6, it is characterised in that the identity that the network equipment is stored with client
The IP address of information binding；The address assignment module includes：
Submodule is searched, for the identity information according to the client, searches whether there is the IP bound with the identity information
Address；
First distribution sub module, for when finding the IP address bound with the identity information, the IP address to be distributed to
The client；
Second distribution sub module, for when not finding the IP address bound with the identity information, in available IP sections
Randomly select a unbound IP and distribute to the client.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510055.0A CN107294831A (en) | 2017-06-28 | 2017-06-28 | Address distribution method and device |
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|---|---|---|---|
| CN201710510055.0A CN107294831A (en) | 2017-06-28 | 2017-06-28 | Address distribution method and device |
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| CN107294831A true CN107294831A (en) | 2017-10-24 |
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ID=60098917
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|---|---|---|---|
| CN201710510055.0A Pending CN107294831A (en) | 2017-06-28 | 2017-06-28 | Address distribution method and device |
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| CN112448878B (en) * | 2021-02-01 | 2021-04-23 | 全讯汇聚网络科技（北京）有限公司 | PPPoE transparent transmission method, PPPoE server and electronic equipment |
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Application publication date: 20171024 |