CN105338528B - Method, system and the wireless access node that packet redirects - Google Patents
Method, system and the wireless access node that packet redirects Download PDFInfo
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- CN105338528B CN105338528B CN201510678841.2A CN201510678841A CN105338528B CN 105338528 B CN105338528 B CN 105338528B CN 201510678841 A CN201510678841 A CN 201510678841A CN 105338528 B CN105338528 B CN 105338528B
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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
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
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Abstract
The present invention is applied to wireless communication technology field, there is provided method, system and the AP that a kind of packet redirects, methods described include：WLAN Device Driver is handled upstream data bag, changes the IP that MAC, destination interface 9000, purpose IP that the purpose MAC of up http packets is AP are AP；WLAN Device Driver is handled downlink data packet, the source MAC for changing descending http packets be former purpose MAC, the source port in up http packets be former destination interface in up http packets, source IP be former purpose IP in up http packets.The present invention, compared to the existing method for realizing that in application layer packet redirects, when number of users is more, is not in that page data bag redirects slow phenomenon, realizes that the method that packet redirects improves in application layer than existing in efficiency.
Description
Technical field
The invention belongs to wireless communication technology field, more particularly to method, system and the AP that a kind of packet redirects.
Background technology
In business wifi solutions, user is carried out in portal verification process, can all be related to packet redirection
The problem of.Wireless user carry out portal certifications not by when, the http packets that script is accessed to internet are redirected to
Wireless access node (Access Point, AP), then the response that error code is 302, the sound are made to the http packets by AP
The IP address of portal servers is included in answering, is provided according to http agreements, next user can access portal services automatically
Device.
However, in process of the present invention is realized, inventor has found the method that the packet that prior art provides redirects, and is
Realize that page data bag redirects in application layer with iptables orders, when number of users is more, it may appear that page number
Slow phenomenon is redirected according to bag, causes Consumer's Experience bad.
The content of the invention
In view of this, the embodiment of the present invention provides method, system and the AP that a kind of packet redirects, to solve existing skill
The method that the packet that art provides redirects, when number of users is more, it may appear that page data bag redirects slow
Phenomenon, the problem of causing Consumer's Experience bad.
First aspect, there is provided a kind of method that packet redirects, methods described include：WLAN Device Driver is to upper
Row packet is handled, and is changed MAC, destination interface 9000, purpose IP that the purpose MAC of up http packets is AP and is
AP IP；
WLAN Device Driver is handled downlink data packet, and the source MAC for changing descending http packets is up
Former purpose MAC, source port in http packets are former destination interface in up http packets, source IP is up http numbers
According to the former purpose IP in bag.
Further, the MAC for being AP in the purpose MAC of the up http packets of modification, destination interface 9000, mesh
IP be AP IP before, methods described also includes：
WLAN Device Driver is received after the STA packets eated dishes without rice or wine, and the STA packets are parsed；
Whether WLAN Device Driver judges wireless user by portal certifications according to analysis result, if certification is not
By then judging whether the STA packets are packets in white list.
Further, the former purpose in the source MAC of the descending http packets of modification is up http packets
MAC, source port are former destination interface in up http packets, source IP be former purpose IP in up http packets it
Before, methods described also includes：
WLAN Device Driver parses to the EtherType data frame from wireless network card；
Whether WLAN Device Driver judges wireless user by portal certifications according to analysis result, if certification is not
By then judging whether the EtherType data frame is packet in white list.
Further, in the packet receiving function ieee80211_input of wireless network card driving to upstream data bag
Reason.
Further, downlink data packet is handled in the function wlan_vap_send that gives out a contract for a project of wireless network card driving.
Second aspect, there is provided a kind of AP, the AP include WLAN Device Driver, the WLAN Device Driver bag
Include upstream data bag processing unit and downlink data packet processing unit；
The upstream data bag processing unit, for handling upstream data bag；
The upstream data bag processing unit includes：
Up modified module, MAC that the purpose MAC for changing up http packets is AP, destination interface 9000,
Purpose IP is AP IP；
The downlink data packet processing unit, for handling downlink data packet；
The downlink data packet processing unit includes：
Descending modified module, the source MAC for changing descending http packets are the former purpose in up http packets
MAC, source port are former destination interface in up http packets, source IP is former purpose IP in up http packets.
Further, the upstream data bag processing unit also includes：
Up parsing module, for receiving after the STA packets eated dishes without rice or wine, the STA packets are parsed；
Up judge module, for whether judging wireless user by portal certifications according to analysis result, if certification
Not by then judging whether the STA packets are packets in white list.
Further, the downlink data packet processing unit also includes：
Descending parsing module, for being parsed to the EtherType data frame from wireless network card；
Descending judge module, for whether judging wireless user by portal certifications according to analysis result, if certification
Not by then judging whether the EtherType data frame is packet in white list.
Further, the packet receiving function ieee80211_ that the upstream data bag processing unit drives in wireless network card
Upstream data bag is handled in input.
Further, the function wlan_vap_send that gives out a contract for a project that the downlink data packet processing unit drives in wireless network card
In downlink data packet is handled.
The third aspect, there is provided the system that a kind of packet redirects, including user terminal and portal servers, the system
System also includes the AP as described in second aspect.
In the embodiment of the present invention, the method that packet redirects is realized in the driver of wireless network card, therefore is
It is a kind of driving layer realize packet redirect method, compared to it is existing application layer realize packet redirect method,
When number of users is more, is not in that page data bag redirects slow phenomenon, is being applied in efficiency than existing
Layer realizes that the method that packet redirects improves.
Brief description of the drawings
Fig. 1 is the implementation process figure for the embodiment of the method that packet of the present invention redirects；
Fig. 2 is that WLAN Device Driver is entered to upstream data bag in the embodiment of the method that packet of the present invention redirects
The implementation process figure of row processing；
Fig. 3 is that WLAN Device Driver is entered to downlink data packet in the embodiment of the method that packet of the present invention redirects
The implementation process figure of row processing；
Fig. 4 is the structured flowchart of AP embodiments of the present invention；
Fig. 5 is the structural representation for the system embodiment that packet of the present invention redirects.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, WLAN Device Driver is handled upstream data bag, changes up http numbers
The IP that MAC that purpose MAC according to bag is AP, destination interface 9000, purpose IP are AP, resets up http packets
To AP；WLAN Device Driver is handled downlink data packet, and the source MAC for changing descending http packets is up
Former purpose MAC, source port in http packets are former destination interface in up http packets, source IP is up http numbers
According to the former purpose IP in bag, user's can receives the http packets after redirecting.
It is described in detail below in conjunction with realization of the specific embodiment to the present invention：
Embodiment one
Fig. 1 shows the implementation process for the method that the packet that the embodiment of the present invention one provides redirects, and details are as follows：
In step S101, WLAN Device Driver is handled upstream data bag, changes up http packets
Purpose MAC be AP MAC, destination interface 9000, purpose IP be AP IP.
In embodiments of the present invention, the packet receiving function ieee80211_input of AP WLAN Device Driver is received
After the STA packets eated dishes without rice or wine, the STA packets are parsed, judge whether wireless user leads to according to analysis result
Portal certifications are crossed, if certification is not by judging whether the STA packets are packets in white list, if not
It is, then it represents that the STA packets are http packets, and the purpose MAC for changing the http packets is AP MAC, purpose
The IP that port is 9000, purpose IP is AP, consequently, it is possible to which the http packets can be redirected to AP.
Wherein, the packet in white list includes address resolution protocol (ARP, Address Resolution
Protocol) packet, dynamic host allocation protocol (DHCP, Dynamic Host Configuration Protocol) number
According to bag and domain name system (DNS, Domain Name System) packet.
Wherein, packet receiving function ieee80211_input changes the mesh of http packets in the Ethernet header of http packets
MAC be AP MAC, in the TCP header of http packets change http packets destination interface be 9000, in http data
The purpose IP that http packets are changed in the IP heads of bag is AP IP.
Specifically, WLAN Device Driver is as shown in Figure 2 to the flow handled from the STA packets eated dishes without rice or wine.
In fig. 2, WLAN Device Driver is received after the STA packets eated dishes without rice or wine, and first judges that the portal of wireless user recognizes
Whether card is by if by without subsequent treatment, if not over judging whether the STA packets are white
Packet in list, if it is, without subsequent treatment, if it is not, then representing that the STA packets are http data
Bag, the purpose MAC that http packets can be changed in the Ethernet header of http packets is AP MAC, in http packets
The destination interface that http packets are changed in TCP header is 9000, and the mesh of http packets is changed in the IP heads of http packets
IP be AP IP, and continue the packet receiving flow of original WLAN Device Driver.
In step s 102, WLAN Device Driver is handled downlink data packet, changes descending http packets
Source MAC be that former purpose MAC, source port in up http packets is former destination interface in up http packets, source
IP is the former purpose IP in up http packets.
In embodiments of the present invention, the function wlan_vap_send that gives out a contract for a project of AP WLAN Device Driver is to from nothing
The EtherType data frame of gauze card is parsed, and whether judges wireless user by portal certifications according to analysis result, such as
Fruit certification is not by judging whether the EtherType data frame is packet in white list then, if it is not, then representing institute
It is http packets to state EtherType data frame, and the source MAC for changing the http packets is the former purpose in upstream data bag
MAC, source port are former destination interface in upstream data bag, source IP is former purpose IP in upstream data bag, consequently, it is possible to nothing
Line user can receive the http packets of redirection.
Wherein, former purpose MAC, former destination interface and former purpose IP are during to the processing of upstream data bag, from upper
Extract in row http packets, and get off relevant information by wireless user's keeping records.
Specifically, the flow that WLAN Device Driver is handled EtherType data frame is as shown in Figure 3.In Fig. 3
In, after WLAN Device Driver receives the EtherType data frame from wireless network card, first judge wireless user's
Whether portal certifications are by if by without subsequent treatment, if not over judging the EtherType
Whether data frame is packet in white list, if it is, without subsequent treatment, if it is not, then representing the ether
Type data frame is http packets, and the source MAC that http packets can be changed in the Ethernet header of http packets is up
Former purpose MAC, source port in http packets are former destination interface in up http packets, source IP is up http numbers
According to the former purpose IP in bag, and continue the flow of giving out a contract for a project of original WLAN Device Driver, consequently, it is possible to which wireless user can connect
Receive the http packets of redirection.
The present embodiment, the method that packet redirects is realized in the driver of wireless network card, therefore is that one kind exists
Driving layer realizes the method that packet redirects, and compared to the existing method for realizing packet redirection in application layer, works as user
When number is more, is not in that page data bag redirects slow phenomenon, is realized in efficiency than existing in application layer
The method that packet redirects improves.
It should be understood that in embodiments of the present invention, the size of the sequence number of above-mentioned each process is not meant to the elder generation of execution sequence
Afterwards, the execution sequence of each process should be determined with its function and internal logic, the implementation process structure without tackling the embodiment of the present invention
Into any restriction.
Can one of ordinary skill in the art will appreciate that realizing that all or part of step in the various embodiments described above method is
To instruct the hardware of correlation to complete by program, corresponding program can be stored in a computer read/write memory medium
In, described storage medium, such as ROM/RAM, disk or CD.
Embodiment two
Fig. 4 show the embodiment of the present invention two provide AP concrete structure block diagram, for convenience of description, illustrate only with
The related part of the embodiment of the present invention.The AP4 includes：WLAN Device Driver 41, the WLAN Device Driver 41 are wrapped
Include：Upstream data bag processing unit 411 and downlink data packet processing unit 412.
Wherein, the upstream data bag processing unit 411, for handling upstream data bag；
The upstream data bag processing unit 411 includes：
Up modified module, MAC that the purpose MAC for changing up http packets is AP, destination interface 9000,
Purpose IP is AP IP；
The downlink data packet processing unit 412, for handling downlink data packet；
The downlink data packet processing unit 412 includes：
Descending modified module, the source MAC for changing descending http packets are the former purpose in up http packets
MAC, source port are former destination interface in up http packets, source IP is former purpose IP in up http packets.
Further, the upstream data bag processing unit 411 also includes：
Up parsing module, for receiving after the STA packets eated dishes without rice or wine, the STA packets are parsed；
Up judge module, for whether judging wireless user by portal certifications according to analysis result, if certification
Not by then judging whether the STA packets are packets in white list, if the STA packets are not white lists
In packet, then it is http packets that can determine the STA packets, and the modification of up modified module can be called up
The IP that MAC that the purpose MAC of http packets is AP, destination interface 9000, purpose IP are AP.
Further, the downlink data packet processing unit 412 also includes：
Descending parsing module, for being parsed to the EtherType data frame from wireless network card；
Descending judge module, for whether judging wireless user by portal certifications according to analysis result, if certification
Not by then judging whether the EtherType data frame is packet in white list, if the EtherType data frame
It is not the packet in white list, then it is http packets that can determine the EtherType data frame, can call descending repair
The source MAC for changing the descending http packets of module modification is that former purpose MAC, source port in up http packets are up http
Former destination interface, source IP in packet are the former purpose IP in up http packets.
Further, the packet receiving function ieee80211_ that the upstream data bag processing unit 411 drives in wireless network card
Upstream data bag is handled in input.
Further, the function wlan_vap_ that gives out a contract for a project that the downlink data packet processing unit 412 drives in wireless network card
Downlink data packet is handled in send.
AP provided in an embodiment of the present invention can be applied in foregoing corresponding embodiment of the method one, and details are referring to above-mentioned reality
The description of example one is applied, will not be repeated here.
Embodiment three
Fig. 5 shows the structural representation for the system that the packet that the embodiment of the present invention three provides redirects, for the ease of
Illustrate, illustrate only the part related to the embodiment of the present invention.The system that the packet redirects includes user terminal station
With portal servers, in addition to the AP described in embodiment two.Wireless user portal certifications not by when, in the wireless of AP
The TCP header, IP heads and Ethernet header of wireless user's up-downgoing data are modified in NIC driver, so, originally
The http data redirections of internet are accessed to AP, then make the response that error code is 302 to the http by AP, are wrapped in the response
The IP address of the server containing portal, being provided according to http agreements, next wireless user can access portal servers automatically,
So it is achieved that the function in user terminal ejection portal page face of being commonly used in business wifi solutions.
The system that packet provided in an embodiment of the present invention redirects can be applied in foregoing corresponding embodiment of the method one
In, details will not be repeated here referring to the description of above-described embodiment one.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be
People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
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 (11)
1. a kind of method that packet redirects, it is characterised in that methods described includes：
WLAN Device Driver is handled upstream data bag, and the purpose MAC for changing up http packets visits to be wireless
Ask the MAC, destination interface 9000, the IP that purpose IP is wireless access node of node；
WLAN Device Driver is handled downlink data packet, and the source MAC for changing descending http packets is up http
Former purpose MAC, source port in packet are former destination interface in up http packets, source IP is up http packets
In former purpose IP.
2. the method as described in claim 1, it is characterised in that in the purpose MAC of the up http packets of the modification be nothing
Before the MAC of line accessed node, destination interface 9000, the IP that purpose IP is wireless access node, methods described also includes：
WLAN Device Driver is received after the mobile workstation packet eated dishes without rice or wine, to the mobile workstation packet
Parsed；
Whether WLAN Device Driver judges wireless user by portal certifications according to analysis result, if certification is not led to
Cross, then judge whether the mobile workstation packet is packet in white list.
3. the method as described in claim 1, it is characterised in that in the source MAC of the descending http packets of the modification be up
Former purpose MAC, source port in http packets are former destination interface in up http packets, source IP is up http numbers
Before the former purpose IP in bag, methods described also includes：
WLAN Device Driver parses to the EtherType data frame from wireless network card；
Whether WLAN Device Driver judges wireless user by portal certifications according to analysis result, if certification is not led to
Cross, then judge whether the EtherType data frame is packet in white list.
4. method as claimed in claim 2, it is characterised in that in the packet receiving function ieee80211_ of wireless network card driving
Upstream data bag is handled in input.
5. method as claimed in claim 3, it is characterised in that in the function wlan_vap_send that gives out a contract for a project of wireless network card driving
In downlink data packet is handled.
6. a kind of wireless access node, it is characterised in that the wireless access node includes WLAN Device Driver, the nothing
Gauze card driver includes upstream data bag processing unit and downlink data packet processing unit；
The upstream data bag processing unit, for handling upstream data bag；
The upstream data bag processing unit includes：
Up modified module, the purpose MAC for changing up http packets are MAC, the destination interface of wireless access node
For the 9000, IP that purpose IP is wireless access node；
The downlink data packet processing unit, for handling downlink data packet；
The downlink data packet processing unit includes：
Descending modified module, for change descending http packets source MAC be up http packets in former purpose MAC,
Source port is former destination interface in up http packets, source IP is former purpose IP in up http packets.
7. wireless access node as claimed in claim 6, it is characterised in that the upstream data bag processing unit also includes：
Up parsing module, for receiving after the mobile workstation packet eated dishes without rice or wine, to the mobile workstation data
Bag is parsed；
Up judge module, for whether judging wireless user by portal certifications according to analysis result, if certification is not led to
Cross, then judge whether the mobile workstation packet is packet in white list.
8. wireless access node as claimed in claim 6, it is characterised in that the downlink data packet processing unit also includes：
Descending parsing module, for being parsed to the EtherType data frame from wireless network card；
Descending judge module, for whether judging wireless user by portal certifications according to analysis result, if certification is not led to
Cross, then judge whether the EtherType data frame is packet in white list.
9. wireless access node as claimed in claim 7, it is characterised in that the upstream data bag processing unit is in wireless network
Block and upstream data bag is handled in the packet receiving function ieee80211_input of driving.
10. wireless access node as claimed in claim 8, it is characterised in that the downlink data packet processing unit is wireless
Downlink data packet is handled in the function wlan_vap_send that gives out a contract for a project of trawl performance.
11. the system that a kind of packet redirects, including user terminal and portal servers, it is characterised in that the system
Also include the wireless access node as described in any one of claim 6 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510678841.2A CN105338528B (en) | 2015-10-19 | 2015-10-19 | Method, system and the wireless access node that packet redirects |
| PCT/CN2016/092123 WO2017067267A1 (en) | 2015-10-19 | 2016-07-28 | Data packet redirection method, system and ap |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510678841.2A CN105338528B (en) | 2015-10-19 | 2015-10-19 | Method, system and the wireless access node that packet redirects |
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| CN105338528B true CN105338528B (en) | 2017-11-10 |
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| CN105338528B (en) * | 2015-10-19 | 2017-11-10 | 华讯方舟科技有限公司 | Method, system and the wireless access node that packet redirects |
| CN108848198B (en) * | 2018-05-07 | 2021-06-29 | 上海中兴易联通讯股份有限公司 | Portal differential pushing method of multi-service forwarding mode AP |
| CN114553448B (en) * | 2020-11-18 | 2024-05-17 | 上海汽车集团股份有限公司 | Vehicle-mounted network information security system |
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| CN101064659A (en) * | 2006-04-28 | 2007-10-31 | 腾讯科技（深圳）有限公司 | Data transmission system and method |
| CN103491065A (en) * | 2012-06-14 | 2014-01-01 | 中兴通讯股份有限公司 | Transparent proxy and transparent proxy realization method |
| CN103825881A (en) * | 2013-12-13 | 2014-05-28 | 福建三元达通讯股份有限公司 | Method and apparatus for realizing redirection of WLAN user based on wireless access controller (AC) |
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| Publication number | Publication date |
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| CN105338528A (en) | 2016-02-17 |
| WO2017067267A1 (en) | 2017-04-27 |
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