CN104349322A - Device for detecting faker in wireless local area network and method thereof - Google Patents
Device for detecting faker in wireless local area network and method thereof Download PDFInfo
- Publication number
- CN104349322A CN104349322A CN201310332812.1A CN201310332812A CN104349322A CN 104349322 A CN104349322 A CN 104349322A CN 201310332812 A CN201310332812 A CN 201310332812A CN 104349322 A CN104349322 A CN 104349322A
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- wireless terminal
- access
- mac address
- online
- legal
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
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- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
The invention provides a device for detecting a faker in a wireless local area network and a method thereof, and the device is applied to an access controller (AC) in the wireless network. The device performs the following processing flow: A. when a wireless terminal requests for accessing to the wireless network, whether the wireless terminal is online is confirmed according to the MAC address of the wireless terminal and the MAC addresses of online legal wireless terminals recorded by the AC; B. when the wireless terminal is confirmed to be online and an AP to which the wireless terminal requests for accessing is different from an initial accessing AP corresponding to the MAC addresses recorded by the AC, the initial accessing AP corresponding to the MAC addresses recorded by the AC is notified to detect survival of the legal wireless terminals, and the wireless terminal requesting for accessing to the wireless network is confirmed to be the faker if the legal wireless terminals still survive. With application of the technical scheme, the faker can be effectively identified so that security of the wireless local area network is ensured.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to the apparatus and method detecting personator in a kind of WLAN.
Background technology
Along with the development of radio network technique, WLAN has been applied in daily work and life more and more.WLAN is a kind of to eat dishes without rice or wine as the network of transmission medium, and this brings very large risk to WLAN (wireless local area network).All the time the activity of spying, attacking, palm off the threaten network security such as legal person online is there is in WLAN (wireless local area network).
In a wireless local area network, due to the continuous change of user, a lot of network can adopt access way expressly, then carries out unified certification, as web authentication etc.But the mobility due to WLAN (wireless local area network) determines it and fixing port can not be utilized as cable network to limit user further, so WLAN (wireless local area network) generally can only carry out identification message by the MAC Address of user.Like this, in existing authentication security system, personator just by the MAC Address of counterfeit legal wireless user terminal, can such as eavesdrop the behavior of the endanger network securities such as data.Because prior art is to this kind of counterfeit behavior None-identified, the network security problem of WLAN (wireless local area network) is caused to become problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides the apparatus and method detecting personator in a kind of WLAN, the personator in WLAN (wireless local area network) can be identified.
Particularly, on described application of installation access controller AC in the wireless network, described AC is for managing wireless access point AP, and certification is carried out to the wireless terminal of request access of radio network, and record authentication success and the MAC Address of online whole legal wireless terminal and corresponding initial access AP, described device comprises:
Address detected module, for when wireless terminal requests access of radio network, the MAC Address of the online legal wireless terminal recorded according to MAC Address and the described AC of described wireless terminal determines that whether described wireless terminal is online;
Survival detection module, for determining that described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, notify that initial access AP corresponding to MAC Address that described AC records detects described legal wireless terminal and whether still survive, if still survived, then determine that the described wireless terminal of this request access of radio network is personator.
On described method application access controller AC in the wireless network, described AC is for managing wireless access point AP, and certification is carried out to the wireless terminal of request access of radio network, and record authentication success and the MAC Address of online whole legal wireless terminal and corresponding initial access AP, described method comprises:
A, when wireless terminal requests access of radio network, the MAC Address of the online legal wireless terminal recorded according to the MAC Address of described wireless terminal and described AC determines that whether described wireless terminal is online;
B, determining that described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, notify that initial access AP corresponding to MAC Address that described AC records detects described legal wireless terminal and whether still survive, if still survived, then determine that the described wireless terminal of this request access of radio network is personator.
The present invention also provides the apparatus and method detecting personator in a kind of WLAN, on application access controller AC in the wireless network.Particularly, described AC for managing wireless access point AP, and carries out certification to the wireless terminal of request access of radio network, and records authentication success and the MAC Address of online whole legal wireless terminal, corresponding access AP and characteristic information.
Described device comprises:
Address detected module, for when wireless terminal requests access of radio network, the MAC Address of the online legal wireless terminal recorded according to MAC Address and the described AC of described wireless terminal determines that whether described wireless terminal is online;
Second matching module, determine that described wireless terminal is online for working as, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.
Described method comprises:
When wireless terminal requests access of radio network, the MAC Address according to the MAC Address of described wireless terminal and the online legal wireless terminal of described AC record determines that whether described wireless terminal is online;
When determining that described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.
From above technical scheme, the present invention checks AC record according to the mac address information of the wireless terminal of request access of radio network, then identify personator by the survival condition of legal wireless terminal corresponding to this MAC Address and characteristic information, thus guarantee the fail safe of WLAN.
Accompanying drawing explanation
Fig. 1 is the device logic diagram of one embodiment of the present invention;
Fig. 2 is the method flow diagram of one embodiment of the present invention;
Fig. 3 is the method detailed flow chart of one embodiment of the present invention;
Fig. 4 is the device logic diagram of another embodiment of the present invention;
Fig. 5 is the method flow diagram of another embodiment of the present invention.
Embodiment
For problems of the prior art, the invention provides the apparatus and method detecting personator in a kind of WLAN, on application access controller AC in the wireless network.As the operation carrier of this logic device, the hardware environment of described access controller AC at least all comprises CPU, internal memory and nonvolatile memory usually.Described AC for managing wireless access point AP, and carries out certification to the wireless terminal of request access of radio network, and records authentication success and the MAC Address of online whole legal wireless terminal and corresponding initial access AP.Please refer to Fig. 1 and Fig. 2, described device includes at logic level: address detected module, survival detection module and the first matching module.In one embodiment of the invention, described device performs following steps in running:
Step 101, when wireless terminal requests access of radio network, the MAC Address according to the MAC Address of described wireless terminal and the online legal wireless terminal of described AC record determines whether online described wireless terminal, and this step is performed by address detected module.
Step 102, determining that described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, notify that the initial access AP of described record detects described legal wireless terminal and whether still survives, if still survived, then determine that the described wireless terminal of this request access of radio network is personator.This step is performed by detection module of surviving.
From step 101 to step 102, whether the present invention is still survived by the wireless terminal detecting this request access network judges whether it is counterfeiter on initial access AP.
Please further refer to Fig. 3, in time having wireless terminal requests access network, AC checks the record of preservation according to the MAC Address of this wireless terminal, if there is no the MAC Address of described wireless terminal in its record preserved, not through certification before this wireless terminal is then described, and then start authentication procedure.If there is the MAC Address of this wireless terminal in its record preserved, then illustrate that described wireless terminal is also online by certification, now, check according to the present invention the initial access AP that in the record that described AC preserves, this Wireless terminal-MAC address is corresponding further.If the AP of initial this request access of access AP and described wireless terminal of the upper record of AC is identical, then described wireless terminal can direct access network, if personator, because personator and legal person can bring the problems such as transfer of data in same AP access, so be easy to be found, this is not emphasis of the present invention, is not repeated at this.
If the AP of initial this request access of access AP and described wireless terminal of AC record is different, then described wireless terminal may be legal person, also may be personator, needs further judgement according to the present invention.Particularly, whether the initial access AP that this Wireless terminal-MAC address that detection module of surviving notifies that described AC records is corresponding detects described legal wireless terminal online and still survives.If described legal wireless terminal is not online relative to initial access AP, that is this wireless terminal is no longer survived relative to initial access AP, then illustrate that described online legal wireless terminal is roamed, the wireless terminal of this request access is exactly original online legal wireless terminal, will it be allowed by current AP access according to the present invention.If described online legal wireless terminal is still survived on initial AP, then illustrate that the described wireless terminal of this request access is personator, and then stop its access network.
Wherein, whether initial access AP detects wireless terminal and survives, specifically can detect described online legal wireless terminal by transmission Null Data message whether still to survive, if described initial access AP can receive the ACK message of legal wireless terminal feedback smoothly, then determine that described legal wireless terminal is still survived on this initially access AP.Further, in order to prevent Null Data data transmission fails, described initial access AP can be set and send repeatedly Null Data message, such as 3 times, if the ACK message all not receiving legal wireless terminal feedback within the predetermined time, determine that described legal wireless terminal is no longer survived.Certainly, those skilled in the art also can take other known means to realize initially accessing AP to detect the survival of wireless terminal, and this is not the emphasis that the present invention pays close attention to, and is not repeated at this.
Due in the process of practical application; when AC detects that legal wireless terminal exits network; usually the authentication information such as MAC Address and current access AP of this recorded wireless terminal can be deleted, if this wireless terminal asks access network just to need certification again again.In this process, often there is the time difference, if personator utilizes this time difference palm off the MAC Address of legal wireless terminal and ask access network, AC is by None-identified.So the present invention also comprises in a preferred embodiment:
Described AC records authentication success and the characteristic information of online whole legal wireless terminal, in a step 102, when described initial access AP detects that described online legal wireless terminal is no longer survived time, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of further coupling described request access and described AC record, if do not mated, then determine that this asks the wireless terminal of access of radio network to be personator, this step is performed by the first matching module.
Particularly, can perform after described network access by wireless terminal the coupling of wireless terminal features information, also can judge before the described network access by wireless terminal of permission.The characteristic information of described wireless terminal comprises at least one in the request message feature of wireless terminal requests access network, DHCP message characteristic sum HTTP message feature.
Wherein, described request message characteristic comprises the feature that the cell etc. carried in frame header information in request message and request message can distinguish different terminals.Described request message characteristic judges when being usually used in wireless terminal requests access network, if the characteristic information coupling of the request message characteristic information of the wireless terminal of request access and record, then illustrate that the wireless terminal that described request accesses is legal wireless terminal, allows it to access.If do not mated, then illustrate that the wireless terminal of described request access is personator, stop its access network.
The DHCP message feature of described wireless terminal is the characteristic value of carrying in DHCP option.Production firm, driving version, the operation information etc. of the DHCP message characteristic sum wireless terminal device of described wireless terminal are closely related, so can determine wireless terminal by this DHCP message feature whether there occurs change, and then for identifying personator.
The HTTP message feature of described wireless terminal refers to the operation system information of carrying in HTTP request message, also can judge whether wireless terminal there occurs change by the information of remaining operating system.HTTP message feature described in the DHCP message characteristic sum of described wireless terminal is used in the further identification of wireless terminal to it after access network usually, if characteristic matching, then illustrate that described wireless terminal is legal person, it is allowed to continue accesses network, if feature is not mated, then illustrate that described wireless terminal is personator, forbid that it continues accesses network and forces to roll off the production line.
Except above three kinds of characteristic informations, those of ordinary skill in the art also can adopt other wireless terminal features information, to realize there is unconverted judgement to wireless terminal.
The present invention also provides the apparatus and method detecting personator in another kind of WLAN, please refer to Fig. 4 and Fig. 5, and compared with aforementioned preferred embodiment, described device only includes at logic level: address detected module and the second matching module.This preferred embodiment in, described AC records authentication success and the characteristic information of online whole legal wireless terminal, and described device performs following steps in running:
Step 201, when wireless terminal requests access of radio network, the MAC Address according to the MAC Address of described wireless terminal and the online legal wireless terminal of described AC record determines whether online described wireless terminal, and this step is performed by address detected module.
Step 202, when described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.This step is performed by the second matching module.
Wherein, the characteristic information of described wireless terminal comprises at least one in the request message feature of wireless terminal requests access network, DHCP message characteristic sum HTTP message feature.
Described as can be seen from above, detect the apparatus and method of personator in WLAN provided by the invention, effectively can identify personator, avoid accidentally injuring legal wireless terminal simultaneously, thus guarantee the fail safe of WLAN.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. in a WLAN, detect the device of personator, on application access controller AC in the wireless network, described AC is for managing wireless access point AP, and certification is carried out to the wireless terminal of request access of radio network, and record authentication success and the MAC Address of online whole legal wireless terminal and corresponding initial access AP, it is characterized in that, described device comprises:
Address detected module, for when wireless terminal requests access of radio network, the MAC Address of the online legal wireless terminal recorded according to MAC Address and the described AC of described wireless terminal determines that whether described wireless terminal is online;
Survival detection module, for determining that described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, notify that initial access AP corresponding to MAC Address that described AC records detects described legal wireless terminal and whether still survive, if still survived, then determine that the described wireless terminal of this request access of radio network is personator.
2. device according to claim 1, is characterized in that, described device also comprises:
First matching module, for recording authentication success and the characteristic information of online whole legal wireless terminal, in initial access AP corresponding to the MAC Address recorded at described AC detects that described legal wireless terminal is no longer survived, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.
3. device according to claim 2, is characterized in that, the characteristic information of described wireless terminal comprises at least one in the request message feature of wireless terminal requests access network, DHCP message characteristic sum HTTP message feature.
4. in a WLAN, detect the device of personator, on application access controller AC in the wireless network, described AC is for managing wireless access point AP, and certification is carried out to the wireless terminal of request access of radio network, it is characterized in that, described AC records authentication success and the MAC Address of online whole legal wireless terminal, corresponding access AP and characteristic information, and described device comprises:
Address detected module, for when wireless terminal requests access of radio network, the MAC Address of the online legal wireless terminal recorded according to MAC Address and the described AC of described wireless terminal determines that whether described wireless terminal is online;
Second matching module, online for working as described wireless terminal, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.
5. device according to claim 4, is characterized in that, the characteristic information of described wireless terminal comprises at least one in the request message feature of wireless terminal requests access network, DHCP message characteristic sum HTTP message feature.
6. in a WLAN, detect the method for personator, on application access controller AC in the wireless network, described AC is for managing wireless access point AP, and certification is carried out to the wireless terminal of request access of radio network, and record authentication success and the MAC Address of online whole legal wireless terminal and corresponding initial access AP, it is characterized in that, described method comprises:
A, when wireless terminal requests access of radio network, the MAC Address of the online legal wireless terminal recorded according to the MAC Address of described wireless terminal and described AC determines that whether described wireless terminal is online;
B, determining that described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, notify that initial access AP corresponding to MAC Address that described AC records detects described legal wireless terminal and whether still survive, if still survived, then determine that the described wireless terminal of this request access of radio network is personator.
7. method according to claim 6, is characterized in that, described method also comprises:
Described AC records authentication success and the characteristic information of online whole legal wireless terminal, and in initial access AP corresponding to the MAC Address recorded at described AC detect that described legal wireless terminal is no longer survived, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.
8. method according to claim 7, is characterized in that, the characteristic information of described wireless terminal comprises at least one in the request message feature of wireless terminal requests access network, DHCP message characteristic sum HTTP message feature.
9. detect a personator's method in WLAN, on application access controller AC in the wireless network, described AC for managing wireless access point AP, and carries out certification to the wireless terminal of request access of radio network, it is characterized in that,
Described AC records authentication success and the MAC Address of online whole legal wireless terminal, corresponding initial access AP and characteristic information,
When wireless terminal requests access of radio network, the MAC Address according to the MAC Address of described wireless terminal and the online legal wireless terminal of described AC record determines that whether described wireless terminal is online;
When described wireless terminal is online, and when the AP of its this request access is different from initial access AP corresponding to MAC Address that described AC records, the characteristic information of the legal wireless terminal that the characteristic information of the wireless terminal of coupling described request access and described AC record, if do not mated, then determine that the wireless terminal of this request access of radio network is personator.
10. method according to claim 9, is characterized in that, the characteristic information of described wireless terminal comprises at least one in the request message feature of wireless terminal requests access network, DHCP message characteristic sum HTTP message feature.
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| CN201310332812.1A CN104349322B (en) | 2013-08-01 | 2013-08-01 | A kind of device and method that personator is detected in Wireless LAN |
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| CN201310332812.1A CN104349322B (en) | 2013-08-01 | 2013-08-01 | A kind of device and method that personator is detected in Wireless LAN |
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| CN106034302A (en) * | 2015-03-09 | 2016-10-19 | 腾讯科技（深圳）有限公司 | Safety monitoring method for hot spot of wireless local area network, device thereof and communication system |
| CN106412904A (en) * | 2016-11-28 | 2017-02-15 | 上海斐讯数据通信技术有限公司 | Fake user preventing access authentication method and system |
| CN106454836A (en) * | 2015-08-06 | 2017-02-22 | 中兴通讯股份有限公司 | Method and device for enhancing use security of equipment certificate |
| CN106790765A (en) * | 2017-02-14 | 2017-05-31 | 北京三快在线科技有限公司 | The recognition methods of insincere MAC Address and device, mobile terminal locating method |
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| CN104349322B (en) | 2018-06-12 |
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