CN103188680A - Access method and access device of wireless network, and DHCP server side - Google Patents
Access method and access device of wireless network, and DHCP server side Download PDFInfo
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- CN103188680A CN103188680A CN2011104491865A CN201110449186A CN103188680A CN 103188680 A CN103188680 A CN 103188680A CN 2011104491865 A CN2011104491865 A CN 2011104491865A CN 201110449186 A CN201110449186 A CN 201110449186A CN 103188680 A CN103188680 A CN 103188680A
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Abstract
The invention provides an access method and an access device of a wireless network, and a DHCP (dynamic host configuration protocol) server side. The access method of the wireless network is applicable to the DHCP server side, and comprises the steps that: S102, the DHCP server side receives a request message of a terminal; S104, the DHCP server side displays a prompt message whether the terminal is accessed to the network; and S106, the DHCP server side confirms and permits the terminal to be accessed to the network after receiving a confirmative trigger based on the prompt message. The access method, the access device and the DHCP server side have the benefits that the DHCP server side is modified, so that user access authority is completely determined by the DHCP server side, and purposes of facilitating operation and ensuring network security can be achieved.
Description
Technical field
The present invention relates to the access authentication of WLAN field, more specifically, relate to a kind of cut-in method, device and DHCP service end of wireless network.
Background technology
On the intelligent mobile terminal of band WiFi wireless network card, the wireless router software of operation can pass through WiFi wireless network, the cellular network on the shared device (GPRS/TD-SCMDA/CDMA etc.) signal.How to guarantee the fail safe of network and the convenience that the user uses, only allow legal users to add network, that is, how to design the wireless broadband network access authentication, the problem that has just become this application scenarios to solve.
Under the OPEN pattern of present WiFi network, the user need not import key and carry out authentication, can add wireless network.That is, the user clicks the connection focus, as long as Dynamic Host Configuration Protocol server also has available idle IP address, the user can normally obtain the IP address, and carries out the Network visit, and whole access procedure does not have the access authentication link.
Under the OPEN pattern of present WiFi network, the user is not carried out proof of identity just allow the normal access network of user, brought very big potential safety hazard to network.
Therefore, in the prior art, there is very big security hidden trouble for the network insertion under the OPEN pattern of WiFi network, and for this problem, do not propose desirable solution at present as yet.
Summary of the invention
The present invention discloses a kind of cut-in method, device and DHCP service end of wireless network, is used for solving prior art, has very big security hidden trouble for the network insertion under the OPEN pattern of WiFi network.
For achieving the above object, according to an aspect of the present invention, provide a kind of cut-in method of wireless network, and by the following technical solutions:
The cut-in method of wireless network is applied to the DHCP service end, and the cut-in method of described wireless network comprises: the S102:DHCP service end receives the request message of terminal; S104: whether described DHCP service end shows the information with described accessing terminal to network; And S106: described DHCP service end confirms to allow described accessing terminal to network after the sure triggering that receives based on described information.
Further, after described step S106, the cut-in method of described wireless network also comprises: S108: described DHCP service end joins the mac address information of described terminal in the default MAC Address tabulation, and the authority of the mac address information of described terminal is set to licensing status.
Further, behind step S108, the cut-in method of described wireless network also comprises: described DHCP service end is with the described request packet loss.
Further, after step S104, the cut-in method of described wireless network also comprises: described DHCP service end confirms to forbid described accessing terminal to network after the negative triggering that receives based on described information.
Further, after described DHCP service end is receiving negative triggering based on described information, confirm to forbid after the described accessing terminal to network, the cut-in method of described wireless network also comprises: the mac address information of described terminal is joined in the default MAC Address tabulation, and the authority of the mac address information of described terminal is set to illegal state.
Further, before step S104, the cut-in method of described wireless network also comprises: described DHCP service end compares mac address information and the tabulation of described default MAC Address of described terminal, and gets a comparative result; Be the mac address information of described terminal when not being recorded in the described default MAC Address tabulation at described comparative result, described DHCP service end is carried out described step S104.
Further, be that the mac address information of described terminal is when being recorded in the described default MAC Address tabulation at described comparative result, the cut-in method of described wireless network also comprises: described DHCP service end is inquired about described default MAC Address tabulation, and gets a Query Result; Be the authority of mac address information in described default MAC Address tabulation of described terminal when being licensing status at described Query Result, described DHCP service end confirms to allow described accessing terminal to network.
Further, described DHCP service end is the terminal with wireless routing function.
According to another aspect of the present invention, provide a kind of access device of wireless network, and by the following technical solutions:
The access device of wireless network is applied to the DHCP service end, and the access device of described wireless network comprises: receiver module, for the request message that receives terminal; Whether display module be used for shows the information with described accessing terminal to network; And first confirm module, is used for after the sure triggering that receives based on described information, confirms to allow described accessing terminal to network.
Further, the access device of wireless network also comprises: first arranges module, be used for the mac address information of described terminal is joined default MAC Address tabulation, and the authority of the mac address information of described terminal is set to licensing status.
Further, the access device of wireless network also comprises: discard module is used for the described request packet loss.
Further, the access device of wireless network also comprises: second confirms module, is used for confirming to forbid described accessing terminal to network after the negative triggering that receives based on described information.
Further, the access device of wireless network also comprises: second arranges module, be used for the mac address information of described terminal is joined default MAC Address tabulation, and the authority of the mac address information of described terminal is set to illegal state.
Further, the access device of wireless network also comprises: comparison module is used for mac address information and the tabulation of described default MAC Address of described terminal are compared, and gets a comparative result; Executive Module, being used at described comparative result is the mac address information of described terminal when not being recorded in described default MAC Address tabulation, carries out described demonstration whether with the information of described accessing terminal to network.
According to a further aspect of the invention, provide a kind of DHCP service end, and by the following technical solutions:
The DHCP service end comprises the access device of above-mentioned wireless network.
Further, described DHCP service end is the terminal with wireless routing function.
By technical scheme of the present invention, by the transformation to the DHCP service end, realize a kind of method of carrying out authentication by the DHCP service end fully, use this method to user's operation without any changing, determine that by the DHCP service end user inserts authority fully, this method can reach the easy to operate purpose of guaranteeing network security again simultaneously.Particularly this method has satisfied intelligent mobile terminal wireless router software, under the situation that requires to insert in unknown client (MAC the unknown), can provide on-site verification, simultaneously, if find disabled user's access of radio network, provide on-the-spot refusal that the ability of service is provided.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.With reference to figure, the present invention is further detailed explanation below.
Description of drawings
Fig. 1 represents the main flow chart of the cut-in method of the described wireless network of the embodiment of the invention;
Fig. 2 represents the particular flow sheet of the cut-in method of the described wireless network of the embodiment of the invention;
Fig. 3 represents the particular flow sheet of terminal and DHCP service end Signalling exchange in the cut-in method of the described wireless network of the embodiment of the invention; And
Fig. 4 represents the primary structure schematic diagram of the access device of the described wireless network of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 represents the main flow chart of the cut-in method of the described wireless network of the embodiment of the invention.
Referring to shown in Figure 1, the cut-in method of wireless network comprises:
The S102:DHCP service end receives the request message of terminal;
S104: whether described DHCP service end shows the information with described accessing terminal to network; And
S106: described DHCP service end confirms to allow described accessing terminal to network after the sure triggering that receives based on described information.
Preferably, after described DHCP service end is receiving sure triggering based on described information, confirm to allow after the described accessing terminal to network, the cut-in method of this wireless network also comprises
S108: described DHCP service end joins the mac address information of described terminal in the default MAC Address tabulation, and the authority of the mac address information of described terminal is set to licensing status.
In the technique scheme of present embodiment, portable terminal is initiated DHCP (DISCOVER or REQUSET) message, the DHCP service end receives message, the prompting of DHCP service end has the unknown device requirement to add network, in the process of DHCP data, carry out on-site verification, for example, the DHCP service end generates the information (for example dialog box information) of " having the unknown device requirement to add network ", and show this information, can have MAC Address and/or other identification informations of this terminal in this information, if obtain sure triggering, then confirm to allow this accessing terminal to network, if obtain negative triggering, then determine not allow this accessing terminal to network.In addition, if confirm to allow this accessing terminal to network, then the DHCP service end adds grant column list with MAC and the corresponding authority of this terminal, simultaneously, abandons this DHCP message.The beneficial effect of the scheme of this technology is: transform based on standard DHCP service end, key character is that the DHCP service end revises the processing logic of DISCOVER and REQUEST, and dhcp client does not need to make any modification, therefore, as long as realized the portable terminal of standard dhcp client, all can carry out proper communication with this DHCP service end.
Preferably, behind step S108, the cut-in method of described wireless network also comprises: described DHCP service end is with the described request packet loss.
In the technique scheme of present embodiment, if terminal is to ask access network for the first time, the DHCP service end is after receiving sure triggering, the message of request for the first time can not processed, selection abandons, only the MAC of this terminal is joined in the default MAC grant column list and get final product, the advantage of doing like this is, owing to handle the hysteresis quality of message, may cause congested to network, handle thereby influence follow-up message, if request message abandons for the first time, and the processing of follow-up message will be smooth and easy a lot.
Preferably, after step S104, the cut-in method of described wireless network also comprises: described DHCP service end is after the negative triggering that receives based on described information, confirm to forbid described accessing terminal to network, and the mac address information of described terminal is joined in the default MAC Address tabulation, and the authority of described mac address information is set to illegal state.
In the technique scheme of present embodiment, portable terminal is initiated DHCP (DISCOVER or REQUSET) message, the DHCP service end receives message, the prompting of DHCP service end has the unknown device requirement to add network, in the process of DHCP data, carry out on-site verification, for example, the DHCP service end generates the information (for example dialog box information) of " having the unknown device requirement to add network ", and show this information, MAC Address and/or other identification informations that can have this terminal in this information, if obtained negative answer, the DHCP service end will provide the ability of refusal, message to this terminal directly abandons, and the MAC of this terminal is set to terminal denial of service state, thereby forbids the access of illegal terminal.
Preferably, before step S104, the cut-in method of described wireless network also comprises: described DHCP service end compares mac address information and the tabulation of described default MAC Address of described terminal, and gets a comparative result; Be the mac address information of described terminal when not being recorded in the described default MAC Address tabulation at described comparative result, described DHCP service end is carried out described step S104.
In the technique scheme of present embodiment, portable terminal is initiated DHCP (DISCOVER or REQUSET) message, the DHCP service end receives message, extract the MAC information of carrying in the message, whether the mandate MAC tabulation of inquiring about the DHCP service end then exists the MAC of this terminal, if there is no, then the prompting of DHCP service end has the unknown device requirement to add network, carries out on-site verification in the process of DHCP data.
Preferably, be that the mac address information of described terminal is when being recorded in the described default MAC Address tabulation at described comparative result, the cut-in method of described wireless network also comprises: described DHCP service end is inquired about described default MAC Address tabulation, and gets a Query Result; Be the authority of mac address information in described default MAC Address tabulation of described terminal when being licensing status at described Query Result, described DHCP service end confirms to allow described accessing terminal to network.
In the technique scheme of present embodiment, portable terminal is initiated DHCP (DISCOVER or REQUSET) message, the DHCP service end receives message, extract the MAC information of carrying in the message, whether the mandate MAC tabulation of inquiring about the DHCP service end then exists the MAC of this terminal, if exist, then then inquire about the access authority of this MAC, if allow this accessing terminal to network, and inquiry IP mapping table is distributed the IP address for this MAC, then upgrade the IP lease of this MAC correspondence, encapsulate the OFFER message at last, and return to this terminal.
DHCP service end in the such scheme can refer to have the terminal of WiFi wireless network card and cellular radio network interface card, the terminal that namely has wireless routing function, the terminal of this moment is as the WiFi wireless router, by the WiFi network provide for other-end and cellular network between mutual, namely other-end is undertaken by terminal and the cellular network that the wireless routing function of WiFi is provided alternately.Certainly, the DHCP service end also can refer to Dynamic Host Configuration Protocol server.
Fig. 2 represents the particular flow sheet of the cut-in method of the described wireless network of the embodiment of the invention.
Referring to shown in Figure 2, the cut-in method of wireless network comprises:
Step 21: portable terminal is initiated the DHCP message;
Step 22:DHCP server lookup grant column list sees whether the MAC of terminal exists, if, execution in step 25, if not, execution in step 23;
Whether step 23:DHCP server ejects the inquiry session frame, this MAC is set allows to insert, if execution in step 26, execution in step 24 if not;
The portable terminal that the setting of step 24:DHCP server has inserted is the denial of service state;
Whether the MAC of this terminal of step 25:DHCP server lookup grant column list allows to insert, if, execution in step 27, if not, execution in step 31;
This terminal of step 28:DHCP server update IP lease;
Step 29: the DHCP message that abandons this terminal;
Step 30: the IP lease that this MAC correspondence is set is 0, and wireless route refusal is this MAC service, and the IP address of reclaiming this MAC correspondence;
Step 31:DHCP server disposes other network informations simultaneously for this MAC distributes an idle IP address;
Step 32: encapsulate the DHCP message, and return to the dhcp client of terminal.
In such scheme of the present invention is, to transform based on standard DHCP service end, key character is that the DHCP service end revises the processing logic of DISCOVER and REQUEST, and dhcp client does not need to make any modification.Improved DHCP protocol processes flow chart institute is shown in Figure 3, will elaborate two handling processes below:
Fig. 3 represents the particular flow sheet of terminal and DHCP service end Signalling exchange in the cut-in method of the described wireless network of the embodiment of the invention.
Referring to shown in Figure 3, step 402-step 403 is the DISCOVER process chart.
Standard DHCP message format is as shown in table 1:
Table 1
DHCP DISCOVER handling process is:
Step 401: when the DHCP service end receives the DHCP request message of self terminal, at first analyze the DHCP request message, therefrom extract facility information, as MAC Address, end host title; Inquire about the MAC grant column list whether this MAC is present in the DHCP service end then, if there is no, then DHCP service end notice has the unknown device requirement to add network, process at the DHCP protocol communication is carried out on-site verification, authorize corresponding access authority (for example allow to insert authority or refusal inserts authority) to this MAC Address, request message is responded directly abandon at last.When this terminal was initiated request message again, inquiry MAC grant column list if refuse this accessing terminal to network, then responded directly this message and abandons; If allow this terminal to add network, then according to DHCP message format assembling OFFER message as shown in table 2, in Option, fill as information such as subnet mask (Subnet Mask), gateway (Router), name server (DNS), Dynamic Host Configuration Protocol server, IP leases.
Table 2
After the assembling of step 402:OFFER message finishes, return to terminal.
DHCP REQUEST handling process is:
Step 403:DHCP REQUEST message format is as shown in table 3:
Table 3
Terminal receives the OFFER message that the DHCP service end is returned, extract relevant configuration information assembling REQUEST message as shown in table 3, and be sent to the DHCP service end, after the DHCP service end receives the REQUEST message, at first whether the MAC of inquiry terminal is present in the MAC grant column list of DHCP service end, if there is no, then DHCP service end notice has the unknown device requirement to add network, process at the DHCP protocol communication is carried out on-site verification, authorize corresponding access authority (for example allow to insert authority or refusal inserts authority) to this MAC Address, request message is responded directly abandon at last; If this MAC exists, but do not allow this MAC to insert, then assemble the NACK message, as shown in table 4.
Table 4
Step 404: return to dhcp client, inquire about the IP mapping table simultaneously, if the IP address of this terminal request belongs to the IP address range that the DHCP service end provides, then putting the IP address is zero, and reclaims this IP address; If this MAC exists, allow this MAC access network simultaneously, and the IP address of this terminal request belongs to the IP address range that the DHCP service end provides, and at this moment upgrades this IP lease and fills information assembling ACK messages such as subnet mask, gateway, DNS, Dynamic Host Configuration Protocol server, and is as shown in table 5.
Table 5
Step 405: return to this terminal;
Step 406: if the IP address of terminal request does not belong to the IP scope that the DHCP service end provides, then reply the NACK message.
Other message is identical with the DHCP protocol processes flow process of standard as handling processes such as RELEASE, INFORM.
Pass through the above embodiment of the present invention, those skilled in the art as can be seen, the cut-in method of the wireless network that the present invention proposes, with solve under the OPEN of WiFi network pattern, the user do not carry out the network security problem that proof of identity just allows the normal access network of user to be brought.The present invention is by transforming the DHCP service end, a kind of safe network access mode is provided, the user directly connects focus and gets final product, need not other operation bidirectional, such as input key, Portal authentication etc., carry out on-site verification by the DHCP service end fully, reach the purpose that the refusal disabled user inserts, guarantee the safety of network.
Fig. 4 represents the primary structure schematic diagram of the access device of the described wireless network of the embodiment of the invention.
Referring to shown in Figure 4, the access device of wireless network comprises: receiver module 40, for the request message that receives terminal; Whether display module 42 be used for shows the information with described accessing terminal to network; And first confirm module 44, is used for after the sure triggering that receives based on described information, confirms to allow described accessing terminal to network.
Alternatively, the access device of wireless network comprises that also first arranges the module (not shown), be used for the mac address information of described terminal is joined default MAC Address tabulation, and the authority of the mac address information of described terminal is set to licensing status.
Alternatively, the access device of wireless network also comprises the discard module (not shown), is used for the described request packet loss.
Alternatively, the access device of wireless network comprises that also second confirms the module (not shown), is used for confirming to forbid described accessing terminal to network after the negative triggering that receives based on described information.
Alternatively, the access device of wireless network comprises that also second arranges the module (not shown), be used for the mac address information of described terminal is joined default MAC Address tabulation, and the authority of the mac address information of described terminal is set to illegal state.
Alternatively, the access device of wireless network also comprises the comparison module (not shown), is used for mac address information and the tabulation of described default MAC Address of described terminal are compared, and gets a comparative result; The Executive Module (not shown), being used at described comparative result is the mac address information of described terminal when not being recorded in described default MAC Address tabulation, carries out described demonstration whether with the information of described accessing terminal to network.
A kind of DHCP service end comprises the access device of above-mentioned wireless network.
Preferably, above-mentioned DHCP service end is the terminal with wireless routing function.
By technical scheme of the present invention, be directed to the OPEN pattern of WiFi network, by the transformation to the DHCP service end, realize a kind of method of carrying out authentication by the DHCP service end fully, use this method to user's operation without any changing, determine that by the DHCP service end user inserts authority fully, this method can reach the easy to operate purpose of guaranteeing network security again simultaneously.Particularly this method has satisfied intelligent mobile terminal wireless router software, under the situation that requires to insert in unknown client (MAC the unknown), can provide on-site verification, simultaneously, if find disabled user's access of radio network, provide on-the-spot refusal that the ability of service is provided.
Claims (16)
1. the cut-in method of a wireless network is applied to the DHCP service end, it is characterized in that, the cut-in method of described wireless network comprises:
The S102:DHCP service end receives the request message of terminal;
S104: whether described DHCP service end shows the information with described accessing terminal to network; And
S106: described DHCP service end confirms to allow described accessing terminal to network after the sure triggering that receives based on described information.
2. the cut-in method of wireless network as claimed in claim 1 is characterized in that, after described step S106, the cut-in method of described wireless network also comprises:
S108: described DHCP service end joins the mac address information of described terminal in the default MAC Address tabulation, and the authority of the mac address information of described terminal is set to licensing status.
3. the cut-in method of wireless network as claimed in claim 2 is characterized in that, behind step S108, the cut-in method of described wireless network also comprises:
Described DHCP service end is with the described request packet loss.
4. the cut-in method of wireless network as claimed in claim 1 is characterized in that, after step S104, the cut-in method of described wireless network also comprises:
Described DHCP service end confirms to forbid described accessing terminal to network after the negative triggering that receives based on described information.
5. the cut-in method of wireless network as claimed in claim 4, it is characterized in that, after described DHCP service end is receiving negative triggering based on described information, confirm to forbid that after the described accessing terminal to network, the cut-in method of described wireless network also comprises:
The mac address information of described terminal is joined in the default MAC Address tabulation, and the authority of the mac address information of described terminal is set to illegal state.
6. the cut-in method of wireless network as claimed in claim 1 is characterized in that, before step S104, the cut-in method of described wireless network also comprises:
Described DHCP service end is tabulated the mac address information of described terminal and is compared with default MAC Address, and gets a comparative result;
Be the mac address information of described terminal when not being recorded in the described default MAC Address tabulation at described comparative result, described DHCP service end is carried out described step S104.
7. the cut-in method of wireless network as claimed in claim 6 is characterized in that, is the mac address information of described terminal when being recorded in the described default MAC Address tabulation at described comparative result, and the cut-in method of described wireless network also comprises:
Described DHCP service end is inquired about described default MAC Address tabulation, and gets a Query Result;
Be the authority of mac address information in described default MAC Address tabulation of described terminal when being licensing status at described Query Result, described DHCP service end confirms to allow described accessing terminal to network.
8. as the cut-in method of each described wireless network of claim 1 to 7, it is characterized in that described DHCP service end is the terminal with wireless routing function.
9. the access device of a wireless network is applied to the DHCP service end, it is characterized in that, the access device of described wireless network comprises:
Receiver module is for the request message that receives terminal;
Whether display module be used for shows the information with described accessing terminal to network; And
First confirms module, is used for after the sure triggering that receives based on described information, confirms to allow described accessing terminal to network.
10. the access device of wireless network as claimed in claim 9 is characterized in that, also comprises:
First arranges module, be used for the mac address information of described terminal is joined default MAC Address tabulation, and the authority of the mac address information of described terminal is set to licensing status.
11. the access device of wireless network as claimed in claim 10 is characterized in that, also comprises:
Discard module is used for the described request packet loss.
12. the access device of wireless network as claimed in claim 9 is characterized in that, also comprises:
Second confirms module, is used for confirming to forbid described accessing terminal to network after the negative triggering that receives based on described information.
13. the access device of wireless network as claimed in claim 12 is characterized in that, also comprises:
Second arranges module, be used for the mac address information of described terminal is joined default MAC Address tabulation, and the authority of the mac address information of described terminal is set to illegal state.
14. the access device of wireless network as claimed in claim 9 is characterized in that, also comprises:
Comparison module is used for mac address information and the tabulation of described default MAC Address of described terminal are compared, and gets a comparative result;
Executive Module, being used at described comparative result is the mac address information of described terminal when not being recorded in described default MAC Address tabulation, carries out the information that whether shows described accessing terminal to network.
15. a DHCP service end is characterized in that, comprises the access device of each described wireless network of claim 9 to 14.
16. DHCP service end as claimed in claim 15 is characterized in that, described DHCP service end is the terminal with wireless routing function.
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