CN1842000A - Method for realizing access authentication of WLAN - Google Patents
Method for realizing access authentication of WLAN Download PDFInfo
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- CN1842000A CN1842000A CN 200510059708 CN200510059708A CN1842000A CN 1842000 A CN1842000 A CN 1842000A CN 200510059708 CN200510059708 CN 200510059708 CN 200510059708 A CN200510059708 A CN 200510059708A CN 1842000 A CN1842000 A CN 1842000A
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Abstract
The invention discloses a method for achieving the switch-in and identifying to the wireless local work, which mainly comprises the following steps: A. establishing the physics connection between the use end and the identifying point; B. the identifying point captures the user end MAC address; C. doing the switch-in identifying to the user end by the MAC address of the identifying end. User can switch-in the WLAN network without user name /keywords when the MAC address is legal; it forbids the illegal MAC address to switch-in the WLAN network.
Description
Technical field
The present invention relates to the wireless local area network technology field, in particular, the present invention relates to the method for access authentication in a kind of WLAN (wireless local area network).
Background technology
Because the user is more and more higher to the requirement of wireless access rate, WLAN (wireless local area network) (WLAN, WirelessLocal Area Network) is arisen at the historic moment, and it can provide wireless data access at a high speed in more among a small circle.WLAN (wireless local area network) comprises multiple different technologies, a widely used technical standard is IEEE802.11b at present, it adopts the 2.4GHz frequency range, the maximum data transmission rate can reach 11Mbps, use the IEEE 802.11g and bluetooth (Bluetooth) technology in addition of this frequency range, wherein, 802.11g the maximum data transmission rate can reach 54Mbps.Other new technology such as IEEE 802.11a and ETSI BRAN Hiperlan2 use the 5GHz frequency range, and maximum transmission rate also can reach 54Mbps.
Present access authentication for wlan network, the most frequently used method is based on usemame/password and authenticates, the principle of this scheme is that the user is when needs are opened the WLAN business, an account is offered in certificate server (normally aaa server) the inside in operator, obtains a username and password.Common user name: wlan@163.com for example; Password is: 12345.When the user need be linked into wlan network, need the own username and password of input, send this user's username and password to certificate server by the RADIUS authentication agreement by authentication points AP then, carry out username and password by certificate server and authenticate.
Concrete with reference to shown in Figure 1, to be prior art carry out the process chart of 802.1X access authentication based on username and password to this figure, mainly comprises the steps:
1. the user needed to open an account in certificate server (being aaa server usually) earlier before inserting wlan network, obtained the username and password of oneself, and AAA and user terminal STA preserve user's username and password.This user name is assumed to be wlan@163.com; Password is assumed to be 12345;
2. set up physical connection between user terminal STA and the authentication points AP;
3. user terminal STA sends the EAPoL-Start message to authentication points AP, begins to carry out the process of 802.1x;
4. authentication points AP sends the EAP-Request/Identity message to user terminal STA, requires user terminal STA that User Identity is sent up;
5. user terminal STA sends to authentication points AP with the User Identity of oneself by the EAP-Response/Identity message, has comprised the user name wlan@163.com that the user opens an account in aaa server and obtains in this message;
6. authentication points AP produces the random number Challenge1 of one 16 byte at random;
7. authentication points AP sends the EAP-Request/MD5-Challenge message to user terminal STA, with going up the random number Challenge1 that produces;
8. user terminal STA is after receiving the EAP-Request/MD5-Challenge message, parse random number Challenge1 wherein, encrypt with password then, after obtaining new password Key1, user terminal STA sends the EAP-Response/MD5-Challenge message to authentication points AP, and the inside is with going up through the password Key1 after encrypting;
9. authentication points AP initiates authentication request by the Access-Request message of Radius agreement to certificate server (aaa server); Password Key1 after containing random number Challenge1 in the message and encrypting;
10. certificate server parses the random number Challenge1 and the password Key1 that wherein carry after receiving the Access-Request message that AP sends over; The certificate server utilization mode the same with user terminal STA encrypted the password Key2 after obtaining encrypting with Challenge1 that obtains and the user's who oneself preserves password; Then Key1 and Key2 are compared, if consistent, authentication is passed through, and certificate server sends the Access-Accept message to authentication points AP, if inconsistent, authentication is not passed through, and certificate server then sends the Access-Reject message to authentication points AP;
11., then send EAP-Success message, informing user terminal STA authentication success to user terminal STA if authentication points AP receives the Access-Accept message; If receive the Access-Reject message, then send EAP-Failure message, informing user terminal STA authentification failure to user terminal STA.
Though above-mentioned existing method of carrying out access authentication based on usemame/password can realize the access authentication to the user, but all need the user to import the usemame/password of oneself when being linked into wlan network owing to the user at every turn, complex operation, the user uses and is inconvenient; In addition, there is not this method of user terminal of interface input username and password can't realize access authentication for some.
Summary of the invention
The technical problem that the present invention solves provides the access authentication method that a kind of user of convenience inserts WLAN (wireless local area network), to simplify user's input operation.
For addressing the above problem, the present invention realizes the method for access authentication of WLAN, and described WLAN (wireless local area network) comprises user terminal, authentication points and certificate server, comprises the steps:
A, user terminal and authentication points are set up physical connection;
B, authentication points obtain the MAC Address of user terminal;
C, with described MAC Address described user terminal is carried out access authentication by described authentication points.
Optionally, authentication points disposes the MAC Address of each user terminal, and step C comprises:
Authentication points authenticates according to the MAC Address of the described user terminal that obtains, if described MAC Address is legal, then user end certification passes through.
Optionally, certificate server disposes the MAC Address of user terminal, and step C comprises:
C1, authentication points send the access request message that comprises the user terminal MAC Address to certificate server and initiate access authentication;
C2, certificate server parse described MAC Address and authenticate according to described MAC Address, if described MAC Address is legal, then user end certification passes through, and return to authentication points and accept message.
Optionally, carry out access authentication with MAC Address, also comprise before the step C1 with a network services identification SSID identifying subscriber terminal:
Authentication points judges whether described user terminal is carried out access authentication with MAC Address according to SSID, if detect described SSID, then is judged as and is, and be back execution in step C1 being judged as.
Optionally, the user terminal that belongs to this territory with domain identifier carries out access authentication with MAC Address, also comprises before the step C2:
Certificate server judges whether described user terminal is carried out access authentication with MAC Address according to the territory of user terminal, carries out the territory of access authentication if user terminal belongs to described with MAC Address, then is judged as to be, and is back execution in step C2 being judged as.
Optionally, the username and password of default subscriber terminal access authentication, user terminal access authentication first also comprised before execution in step C1:
User terminal is initiated the username and password authentication, and the MAC Address of described user terminal is obtained and disposed in authentication by the back certificate server.
Wherein, steps A comprises:
User terminal sends probe request message to authentication points;
Authentication points returns probe response message to user terminal;
User terminal sends authentication request message to authentication points;
Authentication points is to user terminal return authentication response message;
User terminal sends connection request message to authentication points;
Authentication points and user terminal are set up physical connection, return connection response message to user terminal.
Wherein, described certificate server is an authentication, authorization and accounting server
Compared with prior art, the present invention has the following advantages:
At first, the MAC Address that the present invention is based on subscriber terminal equipment is carried out access authentication, for legal MAC Address, the user does not need the user to import usemame/password after start, just can be linked into wlan network, for illegal MAC Address, forbid that then this user is linked in the wlan network, thereby realization user that can safe ready is linked into wlan network;
Secondly, the present invention has also solved certain user's terminal equipment does not have interface to import the access authentication of the wlan network under the situation of usemame/password, there is not interface input usemame/password as the WLAN mobile phone, in this case, the authentication by MAC Address can well guarantee that the user is linked in the WLAN networking.
Description of drawings
Fig. 1 is prior art is carried out access authentication of WLAN based on username and password a process chart;
Fig. 2 is the network environment schematic diagram that access authentication of WLAN method of the present invention is used;
Fig. 3 is the process chart of access authentication of WLAN method first embodiment of the present invention;
Fig. 4 is the process chart of access authentication of WLAN method second embodiment of the present invention;
Fig. 5 is the process chart of access authentication of WLAN method the 3rd embodiment of the present invention.
Embodiment
Core of the present invention is to carry out access authentication based on the MAC Address of subscriber terminal equipment, and MAC Address is 48 a unique address, the identity card of similar equipment under network environment.General, MAC Address also is physical address, hardware address or link address, writes on hardware inside when being produced by network device manufacturers.MAC Address in computer all be with 48 binary representation, the length of MAC Address is 48 (6 bytes), be typically expressed as 12 16 system numbers, separate with colon between per 2 16 system numbers, as: 08:00:20:0A:8C:6D is exactly a MAC Address, wherein preceding 6 16 systems are counted the numbering that 08:00:20 represents network hardware manufacturer, it is distributed by IEEE (IEEE), and then 3 16 systems are counted the series number that 0A:8C:6D represents certain networking products (as network interface card) of this manufacturer's manufacturing.Only otherwise the MAC Address of change subscriber terminal equipment, the MAC Address of this subscriber terminal equipment is only in the world.
With reference to figure 2, this figure is the network environment figure that the present invention realizes access authentication of WLAN.The WLAN that the present invention uses comprises:
User terminal (Supplicant) 1, the entity (Entity) of the end that LAN connected is initiated request as authentication requester to authentication points (Authenticator), and the legitimacy of its identity is tested;
Authentication points 2, the authentication request of response user terminal 1 comprises two logic ports: controlled ports (Controlled Port) 21 and unconfined end mouth (Uncontrolled Port) 22;
Usually, visit local area network (LAN)/metropolitan area network 4, at first user terminal 1 will be initiated authentication request to authentication points 2, and unconfined end mouth 22 is in the diconnected state all the time, is mainly used to transmit the EAPoL protocol frame, can guarantee that user terminal 1 can send or accept all the time; During Certificate Authority, the controlled ports 21 of authentication points 2 just is connected, and is used for delivery network resource and service.
With reference to figure 3, this figure is the first embodiment schematic diagram that the present invention realizes access authentication of WLAN.
Present embodiment static configuration on the AP of wlan network has the mac address table of each subscriber terminal equipment, when user terminal carries out being connected of 802.11b/g/a with AP, AP can obtain the MAC Address of subscriber terminal equipment, and this moment, AP removed to search the mac address table of configuration, exists if find this MAC Address, think that then user terminal is legal, authentication is passed through, and open control to user terminal allows user terminal to carry out follow-up flow process, as apply for the IP address, surf the Net etc.If there is no, then keep control to user terminal; In this case, user terminal can use other authentication mode if use wlan network, and the access authentication mode as based on usemame/password repeats no more here.
Concrete handling process is as follows:
Step s10, user terminal sends probe request message to authentication points;
Step s11, authentication points returns probe response message to user terminal;
Step s12, user terminal sends authentication request message to authentication points;
Step s13, authentication points is to user terminal return authentication response message;
Step s14, user terminal sends connection request message to authentication points;
Step s15, authentication points and user terminal are set up physical connection, return connection response message to user terminal;
Step s16, authentication points obtains the MAC Address of user terminal, authenticate according to MAC Address, find that this MAC Address exists if search the mac address table of configuration, think that then the user is legal, user end certification passes through, can continue follow-up flow processs such as DHCP, otherwise authentication is not passed through, and adopts other authentication modes or directly finishes authentication.
With reference to figure 4, this figure is the second embodiment schematic diagram that the present invention realizes access authentication of WLAN.
The mac address table of static configuration is to realize on AP among above-mentioned first embodiment, in actual use, is subjected to the restriction of AP memory capacity, and the data of the last configuration of AP are generally less, and operation has difficulties.For this reason, the mac address table data of present embodiment configuration go up at certificate server (aaa server) and realize, promptly go up the mac address table of each user terminal of configuration at certificate server (aaa server), MAC Address by AP report of user terminal is given certificate server (aaa server), searches comparison by certificate server (aaa server).
Concrete handling process is as follows:
Identical at step s20-step s25 with the first embodiment step s10-s15, set up 802.11 physical connections by user terminal STA and authentication points AP.
At step s26, authentication points AP obtains the MAC Address of user terminal STA, whether AP belongs to MAC address authentication according to certain rule judgment user simultaneously, for example can judge according to particular network service identifiers SSID, be that AP supports a plurality of SSID, one of them SSID is used for identifying and with MAC Address user terminal is carried out access authentication, if belong to MAC Address and carry out access authentication, then the Access-Request authentication request message of AP structure radius protocol is to certificate server (aaa server), and the user name in this message contains the MAC Address (for example the form of its user name can be MAC@DOMAIN) of user terminal.
At step s27, after certificate server (aaa server) is received the authentication request message of user terminal, parse user name, whether belong to according to certain rule judgment user terminal and to authenticate with MAC Address, for example can judge according to territory (DOMINA), in the relation of certificate server the inside configuration DOMAIN and authentication, the user terminal of representing to belong to this DOMAIN with specific DOMAIN all is to carry out access authentication with MAC Address.Carry out access authentication if belong to MAC Address, then certificate server is searched database according to the MAC Address of this user terminal, compares, and searches the MAC Address of coupling, judges whether this MAC Address is legal.If find the MAC Address of coupling, then this MAC Address is legal, and authentication is passed through, and allows this user terminal to insert wlan network, sends Access-Accept authentication success message to AP; Otherwise, send Access-Reject authentication refuse information to AP.
With reference to figure 5, this figure is the 3rd embodiment schematic diagram that the present invention realizes access authentication of WLAN.
Be configured though among above-mentioned second embodiment configuration of MAC Address is placed in the certificate server (aaa server), but in the reality operation, user's MAC Address may change, at this moment the operation that need increase, delete, revise in certificate server (aaa server) has increased the difficulty of runing.For this reason, present embodiment further improves, and realization certificate server (aaa server) can be learnt the MAC Address of user terminal automatically.
Concrete handling process is as follows:
At first the user offers an account in certificate server (aaa server), obtain a username and password, begin access authentication then, its access process step s30-36 step describes in the step as prior art 1-7 in the background, here repeat no more, in the authentication request message of step s37, AP can give certificate server (aaa server) MAC Address of user terminal STA;
At step s38, certificate server (aaa server) judges whether user's username and password is legal, if it is legal, then authentication is passed through, certificate server this moment (aaa server) can join the MAC Address of user terminal entrained in this authentication of user in the database of oneself automatically, and send authentication success message Access-Accept to authentication points AP, then at step s39, authentication points AP informing user terminal STA authentication success, identical in all the other follow-up flow processs and the background technology, repeat no more here.
Need to prove, when the user is linked in the wlan network next time again in the present embodiment, owing to preserved user's MAC Address in certificate server this moment (aaa server), the identifying procedure of this moment is identical with second embodiment, certificate server carries out access authentication with MAC Address to user terminal, repeats no more here.
In addition, if the user has changed STA, also this has become its MAC Address like this, user's MAC address authentication when inserting for the first time can be failed, the user can pass through the usemame/password authentication success, and upgrade the MAC Address of preserving in the certificate server (aaa server) simultaneously, just can by MAC Address carry out access authentication when inserting next time.
The above only is a preferred implementation of the present invention, does not constitute the qualification to protection range of the present invention.Any any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (8)
1, a kind of method that realizes access authentication of WLAN, described WLAN (wireless local area network) comprises user terminal, authentication points and certificate server, it is characterized in that, comprising:
A, user terminal and authentication points are set up physical connection;
B, authentication points obtain the MAC Address of user terminal;
C, with described MAC Address described user terminal is carried out access authentication by described authentication points.
2, the method for realization access authentication of WLAN according to claim 1 is characterized in that, authentication points disposes the MAC Address of each user terminal, and step C comprises:
Authentication points authenticates according to the MAC Address of the described user terminal that obtains, if described MAC Address is legal, then user end certification passes through.
3, the method for realization access authentication of WLAN according to claim 1 is characterized in that, certificate server disposes the MAC Address of user terminal, and step C comprises:
C1, authentication points send the access request message that comprises the user terminal MAC Address to certificate server and initiate access authentication;
C2, certificate server parse described MAC Address and authenticate according to described MAC Address, if described MAC Address is legal, then user end certification passes through, and return to authentication points and accept message.
4, the method for realization access authentication of WLAN according to claim 3 is characterized in that, carries out access authentication with a network services identification SSID identifying subscriber terminal with MAC Address, also comprises before the step C1:
Authentication points judges whether described user terminal is carried out access authentication with MAC Address according to SSID, if detect described SSID, then is judged as and is, and be back execution in step C1 being judged as.
5, the method for realization access authentication of WLAN according to claim 3 is characterized in that, the user terminal that belongs to this territory with domain identifier carries out access authentication with MAC Address, also comprises before the step C2:
Certificate server judges whether described user terminal is carried out access authentication with MAC Address according to the territory of user terminal, carries out the territory of access authentication if user terminal belongs to described with MAC Address, then is judged as to be, and is back execution in step C2 being judged as.
6, according to the method for claim 3,4 or 5 each described realization access authentication of WLAN, it is characterized in that, the username and password of default subscriber terminal access authentication, user terminal access authentication first also comprised before execution in step C1:
User terminal is initiated the username and password authentication, and the MAC Address of described user terminal is obtained and disposed in authentication by the back certificate server.
7, the method for realization access authentication of WLAN according to claim 6 is characterized in that, steps A comprises:
User terminal sends probe request message to authentication points;
Authentication points returns probe response message to user terminal;
User terminal sends authentication request message to authentication points;
Authentication points is to user terminal return authentication response message;
User terminal sends connection request message to authentication points;
Authentication points and user terminal are set up physical connection, return connection response message to user terminal.
8, the method for realization access authentication of WLAN according to claim 7 is characterized in that, described certificate server is an authentication, authorization and accounting server.
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