CN107241458A - A kind of method and device of avoidance system type detection - Google Patents
A kind of method and device of avoidance system type detection Download PDFInfo
- Publication number
- CN107241458A CN107241458A CN201710448984.3A CN201710448984A CN107241458A CN 107241458 A CN107241458 A CN 107241458A CN 201710448984 A CN201710448984 A CN 201710448984A CN 107241458 A CN107241458 A CN 107241458A
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- Prior art keywords
- request message
- dhcp request
- system type
- dhcp
- order
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Classifications
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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
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
-
- 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
- H04L69/03—Protocol definition or specification
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
Abstract
The invention discloses a kind of method of avoidance system type detection, including：S100 obtains DHCP request message to be sent；S200 adjusts the order of option55 required parameter in DHCP request message to be sent, generates the first DHCP request message；S300 sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.In addition, the invention also discloses a kind of device of avoidance system type detection, including：Acquisition module, order adjusting module and sending module；Order adjusting module is connected with acquisition module, sending module respectively, wherein：Acquisition module obtains DHCP request message to be sent；Order adjusting module adjusts the order of option55 required parameter in DHCP request message to be sent, generates the first DHCP request message；Sending module sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.Order of the invention by improving option55 required parameter in DHCP message, has evaded terminal system type information and has been collected, protected the privacy of user.
Description
Technical field
The present invention relates to the method and dress in wireless local area network technology field, more particularly to a kind of avoidance system type detection
Put.
Background technology
DHCP (Dynamic Host Configuration Protocol, DHCP) is a kind of use
A kind of local net network agreement that client/server model is worked based on udp protocol.Main function is the management concentrated, divided
With IP address, the main frame in network environment is set dynamically to obtain the information such as IP address, Gateway addresses, dns server address.
DHCP protocol uses client/server model, and the dynamically distributes task of host address is driven by network host.Work as DHCP service
When device receives the information from network host applied address, the information such as related address configuration can be just sent to network host,
To realize the dynamic configuration of Network Host address information.
The special letter that DHCP Option are configured primarily directed to the equipment of different vendor under the application of varying environment
Breath.The span of DHCP Options options is 1~255, wherein, option55 is objective to set required parameter list option
Family end indicates which network configuration parameters, the DHCP message that Dynamic Host Configuration Protocol server is responded obtained from server for needs using the option
In, the option content is the corresponding option value of parameter of client request.Option12 is hostname, it will usually be set to production
Category type and sequence number.
In current operating system, terminal typically can be designed traditionally in the option55 in DHCP message
Parameter Request List order identifies the OS types of oneself, such as, by option55, we are with regard to that can know
The OS of terminal is iOS, Android or Windows, and like this, unconsciously, this information is just collected by AP,
The leakage of information is caused, because on all terminal associations after AP, DHCP interactions are necessary processes.
The content of the invention
The present invention provides a kind of method of avoidance system type detection, solves terminal type in the prior art and is handed in DHCP
The technical problem easily revealed during mutually.
The method of the avoidance system type detection of the present invention includes：
S100 obtains DHCP request message to be sent；
S200 adjusts the order of option55 required parameter in the DHCP request message to be sent, generation first
DHCP request message；
S300 sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
Terminal can adjust the order for treating option55 required parameter in the DHCP message before DHCP message is sent,
The new message of generation, new message is still legal, can be handled by Dynamic Host Configuration Protocol server, while also having evaded the system type quilt of terminal
Recognize.
Further, option55 required parameter and its to put in order be root in the DHCP request message to be sent
It is configured according to the system type and its version of dhcp client.
Further, the step S200 includes：
S210 is by order random-ising, the generation the of option55 required parameter in the DHCP request message to be sent
One DHCP request message.
Further, the step S200 includes:
S230 is carried out the required parameter of option55 in the DHCP request message to be sent according to preset rules
Sequence, generates the first DHCP request message.
Further, also include before the step S300：
S250 checks in the first DHCP request message whether contain system type field in option12 options, if
Into step S400, otherwise into step S300；
S400 changes the system type field in option12 options in the first DHCP request message, generation second
DHCP request message；
S500 sends the second DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
On the other hand, the invention also discloses a kind of device of avoidance system type detection, including：Acquisition module, order
Adjusting module and sending module；The order adjusting module is connected with the acquisition module, the sending module respectively, wherein：
The acquisition module obtains DHCP request message to be sent；The order adjusting module adjusts the DHCP request to be sent
The order of option55 required parameter in message, generates the first DHCP request message；The sending module sends described first
DHCP request message, realization is interacted with Dynamic Host Configuration Protocol server.
Further, in the DHCP request message to be sent that the acquisition module is obtained, option55 request
Parameter and its to put in order be configured according to the system type and its version of dhcp client.
Further, the order adjusting module includes：Randomization submodule, for by the DHCP request to be sent
Option55 required parameter is order random-ising in message, generates the first DHCP request message.
Further, the order adjusting module includes：Rule presets submodule and presets submodule phase with the rule
Sorting sub-module even, wherein：The default submodule of rule sets ordering rule according to the instruction of user；The sequence submodule
Root tuber is according to default request of the submodule default rule to option55 in the DHCP request message to be sent of the rule
Parameter is ranked up, and generates the first DHCP request message.
Further, the device of the avoidance system type detection also includes：Searching modul, operation module, the lookup
Module is connected with the operation module, order adjusting module and sending module respectively, the operation module also with the transmission mould
Block is connected, wherein：The required parameter that the order adjusting module adjusts option55 in the DHCP request message to be sent is suitable
After sequence, the first DHCP request message of generation, the searching modul checks the option12 options of the first DHCP request message
In whether contain system type field, if so, then controlling the operation module to change the first DHCP request message
System type field in option12 options, generates the second DHCP request message, and send described by the sending module
Second DHCP request message, realization is interacted with Dynamic Host Configuration Protocol server；If the searching modul is in the first DHCP request message
System type field is not found in option12 options, then the sending module sends the first DHCP request message, real
Now interacted with Dynamic Host Configuration Protocol server.
The present invention is by changing the required parameter order of option55 in DHCP request message, it is to avoid terminal type
Leakage, protects the privacy of user, while not influenceing terminal to obtain corresponding network configuration from Dynamic Host Configuration Protocol server again.In addition, this
Field of the invention also by further detecting option12 options, it is to avoid the information of the system type caused by repairing the host name
Leakage.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is a kind of flow chart of the embodiment of the method one of avoidance system type detection of the invention；
Fig. 2 is a kind of flow chart of another embodiment of method of avoidance system type detection of the invention；
Fig. 3 is a kind of block diagram of the device embodiment one of avoidance system type detection of the invention；
Fig. 4 is a kind of block diagram of another embodiment of device of avoidance system type detection of the invention；
Fig. 5 is a kind of block diagram of another embodiment of device of avoidance system type detection of the invention；
Fig. 6 is a kind of block diagram of another embodiment of device of avoidance system type detection of the invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail, it is clear that described embodiment is only embodiment of the invention a part of, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
The invention discloses a kind of method of avoidance system type detection, embodiment one as shown in figure 1, including：
S100 obtains DHCP request message to be sent；
S200 adjusts the order of option55 required parameter in the DHCP request message to be sent, generation first
DHCP request message；
S300 sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
In current OS systems, typically it can traditionally design in the option55 in special DHCP message
Parameter Request List order identifies the OS types of oneself, and typically by option55, we are with regard to that can know
The system type of terminal is iOS, Android or Windows, and like this, unconsciously, this information is just searched by AP
Collect, because on all terminal associations after AP, DHCP interactions are necessary processes.
The present invention is by improving setting for Parameter Request List order in the option55 in DHCP message
Meter is collected to evade the system type of terminal.Because the content of the Parameter Request List in option55 is not
Order is needed, such as 1,2,3 and 2,1,3 is all legal message, only a kind of 1,2,3 operating system class of terminal of mark
Type, 2,1,3 identify the OS Type of another terminal.So when sending DHCP message every time, therein
Parameter Request List order changes adjustment in option55, and like this, message is still legal, can be by
DHCP Server processing, while the system type for also having evaded terminal is recognized by transferring equipments such as middle AP or other routers
Go out.
Client terminal typically can set DHCP when constructing DHCP request message according to the system type of itself and version number
Option55 required parameter in request message, that is to say, that general required parameter according to option55 and put in order can
So which system type and version be seen to be.We are with android system, exemplified by edition 4 .4.2, and corresponding option55's please
Ask parameter and put in order for：1,33,3,6,15,28,51,58,59.If iOS system, version number is 10.3.1, then right
The option55 answered required parameter and put in order for：1,121,3,6,15,119,252.Therefore, if not using the present invention
If method, Dynamic Host Configuration Protocol server, please according to option55 in message after the DHCP request message of client terminal transmission is received
Parameter and its order are asked, system type and the version number of dhcp client is just may know that, causes the leakage of privacy information.And this
Invention is then before DHCP request message is sent in DHCP client terminals, first by the DHCP request message to be sent
The order of option55 required parameter is upset, such as, by DHCP request message to be sent, option55 request
Parameter puts in order becomes 33,6,1,15,59,58,3,28,51 by 1,33,3,6,15,28,51,58,59.Not changing so please
Parameter is sought, simply upsets putting in order for each parameter, DHCP client terminals is had no effect on and matches somebody with somebody from Dynamic Host Configuration Protocol server acquisition network
Put, but cause Dynamic Host Configuration Protocol server can not know terminal system type from option55, reached protection privacy, it is to avoid terminal system
System type is collected by Dynamic Host Configuration Protocol server.
Another embodiment of the present invention, on the basis of above-described embodiment 1, in above-mentioned steps S200, changes option55
The technological means of order of required parameter have many kinds, such as, by option55 in the DHCP request message to be sent
Required parameter it is order random-ising, every time send DHCP message when, Parameter in option55 therein
Request List's is order random-ising, like this, and message is still legal, can be by DHCP Server processing, while also advising
The OS types for having kept away STA (terminal) are recognized by transferring equipments such as middle AP or other routers.Specifically, including step：
(1) in STA associations AP SSID.
(2) STA is the order random number randomization of Parameter Request List in DHCP option55, life
The new DHCP message of production.
(3) STA is interacted with new DHCP message and DHCP Server.
(4) from now on any DHCP interaction in, in option55 Parameter Request List will again with
Machine.
In addition to the order for the required parameter that the method in above-described embodiment using randomization changes option55, we are also
Can be by setting preset rules, then according to preset rules by option55 in the DHCP request message to be sent of acquisition
Required parameter is ranked up, and generates the first DHCP request message, such as, and we can set preset rules asking option55
Parameter is asked to be ranked up according to order from big to small, we are by taking iphone 6 as an example, and client is according to iphone 6 operation
System (IOS) and Version：10.3.2 setting option55 required parameter order is：1,121,3,6,15,119,252；Press
According to our default ordering rules from big to small, then after DHCP request message to be sent is got, by the message
Middle option55 former required parameter order is changed to：252,121,119,15,6,3,1.So, dhcp client is being received
This has become after the new DHCP message of option55 required parameter orders, and the system type of access terminal just can not be obtained accordingly
.The setting of preset rules can be configured according to the demand or instruction of user.
Another embodiment of the present invention, as shown in Fig. 2 including：
S100 obtains DHCP request message to be sent；
S200 adjusts the order of option55 required parameter in the DHCP request message to be sent, generation first
DHCP request message；
S250 checks in the first DHCP request message whether contain system type field in option12 options, if
Into step S400, otherwise into step S300；
S300 sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server；
S400 changes the system type field in option12 options in the first DHCP request message, generation second
DHCP request message；
S500 sends the second DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
On the basis of any of the above-described embodiment, in addition to the order of parameter is made requests on to option55 and is changed, pin is gone back
Field to option12 options is checked, if option12 options contain system type field, it is modified
Or delete.Option12 is host name field, it will usually be set to product type and sequence number, such as certain vendor A ndroid
The Option12 fields of mobile phone are " android-9dc35f21ged653 ", then just can be with by the fields of Option12 options
Substantially determine that this terminal system type is Android.Option12 fields are effective for most of original terminal, still
(such as user can be changed to any name, such as Android phone is after user have modified terminal name information
Andorid-45342323, and 12345) user can be revised as, then the field of option12 options is just changed to accordingly
12345, just do not know how to differentiate classification.Therefore, if user have modified the host name of terminal, then option12 options
In terminal system type field would not occur, if user does not change host name also, then terminal send DHCP request
Before message, in addition to the required parameter order for adjusting option55, option12 system type field can be also changed, this is repaiied
Changing name can allow user to specify order, can also name automatically.Follow-up each DHCP interactions, option22 options just may be used
Built with amended system type field.
Based on identical technical concept, on the other hand, the invention also discloses a kind of device of avoidance system type detection,
The device can use the method for the avoidance system type detection of the present invention, specifically, avoidance system type detection of the present invention
Device embodiment one is as shown in figure 3, the monitoring device includes：Acquisition module 10, order adjusting module 20 and sending module 30；
The order adjusting module 20 is connected with the acquisition module 10, the sending module 30 respectively, wherein：The acquisition module 10
Obtain DHCP request message to be sent；The order adjusting module 20 is adjusted in the DHCP request message to be sent
The order of option55 required parameter, generates the first DHCP request message；The sending module 30 sends the first DHCP
Request message, realization is interacted with Dynamic Host Configuration Protocol server.
The device of the avoidance system type detection of the present invention is typically integrated in terminal, by changing in DHCP request message
The order of option55 required parameter avoids the system type of terminal by transferring equipments such as middle AP or other routers
Recognize.Although changing the order of option55 required parameter, configuration is had no effect on, because required parameter does not change,
Or those parameters, are simply sequentially exchanged, Dynamic Host Configuration Protocol server can also be corresponding with required parameter according to the parameter configuration of request
Option value.Before not changing order, the option55 required parameter sequence identification system type of requesting terminal, and pass through
The system type that the order of required parameter in improvement DHCP message in option55 can then evade terminal is collected.
In above-described embodiment, in the DHCP request message to be sent that the acquisition module 10 is obtained, option55
Required parameter and its to put in order be configured according to the system type and its version of dhcp client.
Another embodiment of the present apparatus, as shown in figure 4, on the basis of above-described embodiment one, the order adjusting module
20 include：Randomization submodule 21, for by the DHCP request message to be sent option55 required parameter it is suitable
Sequence randomization, generates the first DHCP request message.
By randomization submodule 21 come the order of randomization option55 required parameter so that the system type of terminal
It is not compromised.In follow-up any DHCP interactions, the required parameter in option55 will randomization again.Specifically, terminal
On be integrated with the present invention detection means after, on terminal association after AP SSID, terminal is by randomization submodule 21 DHCP
Required parameter is order random-ising in option55 in request message, generates new DHCP message；The terminal uses new
DHCP message and Dynamic Host Configuration Protocol server interaction, in any DHCP interactions from now on, Parameter Request in option55
List will randomization again.
Another embodiment of device of avoidance system type detection of the present invention is as shown in figure 5, on the basis of above-described embodiment one
On, the order adjusting module 20 includes：The default submodule 22 of rule and the sequence being connected with the default submodule 22 of the rule
Submodule 23, wherein：The default submodule 22 of rule sets ordering rule according to the instruction of user；The sorting sub-module 23
According to default request of the default rule of submodule 22 to option55 in the DHCP request message to be sent of the rule
Parameter is ranked up, and generates the first DHCP request message.
The present apparatus adjusts the order of option55 required parameter by the method sorted according to preset rules.
Last embodiment of the device of avoidance system type detection of the present invention, as shown in fig. 6, implementing any of the above-described
On the basis of example, the device of the avoidance system type detection also includes：Searching modul 40, operation module 50, the lookup mould
Block 40 is connected with the operation module 50, order adjusting module 20 and sending module 30 respectively, the operation module 50 also with institute
Sending module 30 is stated to be connected, wherein：The order adjusting module 20 adjusts option55 in the DHCP request message to be sent
Required parameter order, generation the first DHCP request message after, the searching modul 40 checks the first DHCP request message
Option12 options in whether contain system type field, if so, then controlling the operation module 50 to change described first
System type field in the option12 options of DHCP request message, generates the second DHCP request message, and pass through the hair
Module 30 is sent to send the second DHCP request message, realization is interacted with Dynamic Host Configuration Protocol server；If the searching modul 40 is described
System type field is not found in the option12 options of first DHCP request message, then the sending module 30 sends described
First DHCP request message, realization is interacted with Dynamic Host Configuration Protocol server.
In the present embodiment, in addition to the order of the required parameter of the option55 in adjustment DHCP message, also further look into
See and whether contain system type field in option12, if general terminal is unmodified, Hostname can show type and
Model, accordingly, it is possible to meeting leakage system type, therefore the present apparatus can also check in DHCP message whether contain in option12 fields
System type field, than such as whether containing system type fields such as Android, IOS, Windows, just also needing to if any
Modification, it is of course possible to which prompting allows user to change host name, or voluntarily changes host name, alteration ruler can system from set or according to
User's request is preset.After having changed, Dynamic Host Configuration Protocol server would not know the system type of terminal.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of method of avoidance system type detection, it is characterised in that including：
S100 obtains DHCP request message to be sent；
S200 adjusts the order of option55 required parameter in the DHCP request message to be sent, and the first DHCP of generation please
Seek message；
S300 sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
2. the method for a kind of avoidance system type detection according to claim 1, it is characterised in that described to be sent
Option55 required parameter and its to put in order be system type and its version according to dhcp client in DHCP request message
Originally it is configured.
3. a kind of method of avoidance system type detection according to claim 1, it is characterised in that the step S200 bags
Include：
S210 by the DHCP request message to be sent option55 required parameter it is order random-ising, generation first
DHCP request message.
4. a kind of method of avoidance system type detection according to claim 1, it is characterised in that the step S200 bags
Include:
S230 is arranged the required parameter of option55 in the DHCP request message to be sent according to preset rules
Sequence, generates the first DHCP request message.
5. the method for a kind of avoidance system type detection according to claim any one of 1-4, it is characterised in that described
Also include before step S300：
S250 checks in the first DHCP request message whether contain system type field in option12 options, if into
Step S400, otherwise into step S300；
S400 changes the system type field in option12 options in the first DHCP request message, and the 2nd DHCP of generation please
Seek message；
S500 sends the second DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
6. a kind of device of avoidance system type detection, it is characterised in that including：Acquisition module, order adjusting module and transmission
Module；The order adjusting module is connected with the acquisition module, the sending module respectively, wherein：
The acquisition module obtains DHCP request message to be sent；
The order adjusting module adjusts the order of option55 required parameter in the DHCP request message to be sent, raw
Into the first DHCP request message；
The sending module sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
7. the device of a kind of avoidance system type detection according to claim 6, it is characterised in that the acquisition module is obtained
In the DHCP request message to be sent taken, option55 required parameter and its to put in order be according to dhcp client
System type and its version be configured.
8. the device of a kind of avoidance system type detection according to claim 6, it is characterised in that the order adjusts mould
Block includes：Randomization submodule, for by the order of option55 required parameter in the DHCP request message to be sent
Randomization, generates the first DHCP request message.
9. the device of a kind of avoidance system type detection according to claim 6, it is characterised in that the order adjusts mould
Block includes：The default submodule of rule and the sorting sub-module being connected with the default submodule of the rule, wherein：
The default submodule of rule sets ordering rule according to the instruction of user；
The sorting sub-module is according to the default submodule default rule of the rule to the DHCP request message to be sent
Middle option55 required parameter is ranked up, and generates the first DHCP request message.
10. the device of a kind of avoidance system type detection according to claim any one of 6-9, it is characterised in that also wrap
Include：Searching modul, operation module, the searching modul respectively with the operation module, order adjusting module and sending module phase
Even, the operation module is also connected with the sending module, wherein：
The order adjusting module adjusts the required parameter order of option55 in the DHCP request message to be sent, generation the
After one DHCP request message,
The searching modul checks in the option12 options of the first DHCP request message whether contain system type field,
If so, then controlling the operation module to change the system type word in the option12 options of the first DHCP request message
Section, generates the second DHCP request message, and sends the second DHCP request message by the sending module, realizes and DHCP
Server interaction；
If the searching modul does not find system type field in the option12 options of the first DHCP request message,
Then the sending module sends the first DHCP request message, and realization is interacted with Dynamic Host Configuration Protocol server.
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| CN101127762A (en) * | 2006-08-15 | 2008-02-20 | 华为技术有限公司 | An information interaction method and system based on dynamic host configuration protocol |
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|---|---|---|---|---|
| CN101127762A (en) * | 2006-08-15 | 2008-02-20 | 华为技术有限公司 | An information interaction method and system based on dynamic host configuration protocol |
| US8458308B1 (en) * | 2006-08-23 | 2013-06-04 | Infoblox Inc. | Operating system fingerprinting |
| CN101977187A (en) * | 2010-10-20 | 2011-02-16 | 中兴通讯股份有限公司 | Firewall policy distribution method, client, access server and system |
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