CN104601737A - Method for AP (Access Point) to acquire IP (Internet Protocol) addresses of clients - Google Patents
Method for AP (Access Point) to acquire IP (Internet Protocol) addresses of clients Download PDFInfo
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- CN104601737A CN104601737A CN201310534007.7A CN201310534007A CN104601737A CN 104601737 A CN104601737 A CN 104601737A CN 201310534007 A CN201310534007 A CN 201310534007A CN 104601737 A CN104601737 A CN 104601737A
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- arp
- address
- mac address
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention provides a method for an AP (Access Point) to acquire the IP (Internet Protocol) addresses of clients. The method comprises the following steps: creating a /tmp/arp file folder for saving an ARP (Address Resolution Protocol) list of the clients, and simultaneously backing up a /tmp/arp file; reading the MAC (Media Access Control) addresses and the IP addresses of the ARP list in the /tmp/arp backup file, and judging whether a certain MAC address is included in a wireless MAC address list or not; if the certain MAC address is not included in the wireless MAC address list, not saving the certain MAC address and a certain IP address in the ARP list in the /tmp/arp file, and continuing to read a next MAC address and a next IP address; and if the certain MAC address is included in the wireless MAC address list, judging whether the certain MAC address is the same as an MAC address where a system log is extracted or not, and saving the MAC address where the system log is extracted and a corresponding IP address in the ARP list in the /tmp/arp file if the certain MAC address is the same as the MAC address where the system log is extracted. Under the situation that the AP and an uplink DHCP (Dynamic Host Configuration Protocol) server address pool are not on the same network segment, the ARP list created in a customized way is maintained, and the acquired IP address of each client is saved in the ARP list, so that the IP addresses of the clients linking to the AP can be acquired conveniently, and a series of management based on the IP addresses can be performed on the clients.
Description
Technical field
The present invention relates to a kind of method obtaining client ip address, particularly relate to AP under the pattern of client and AP wireless connections and obtain the method for client ip address.
Background technology
AP is as bridge, for linking wireless client and upstream service device, when the IP address of AP and up Dynamic Host Configuration Protocol server address pool not at the same network segment, ARP(Address ResolutionProtocol, address resolution protocol, obtain an ICP/IP protocol of physical address) the bag network layer that can not enter AP processes, and AP will obtain less than the IP address being distributed to client by Dynamic Host Configuration Protocol server.Thus, the IP address of AP and up Dynamic Host Configuration Protocol server address pool will at the same network segments, and AP could obtain the IP address being connected to the client of AP in ARP list.And in actual application environment, the IP address of AP but through being everlasting the different network segments, can save the assignable IP address of Dynamic Host Configuration Protocol server from Dynamic Host Configuration Protocol server like this.
Thus, need to solve when AP and up Dynamic Host Configuration Protocol server address pool be not when the same network segment, AP can obtain the problem of the IP address being distributed to client by Dynamic Host Configuration Protocol server.
Summary of the invention
The technical problem that the present invention need solve be to provide a kind of IP address as AP and up Dynamic Host Configuration Protocol server address pool not when the same network segment AP obtain the method for client ip address.
For solving above-mentioned technical problem, the present invention devises a kind of method that AP obtains client ip address, and it comprises the following steps:
Step1: the ARP information obtaining AP system journal, then from ARP information, take out MAC Address and the IP address of client;
Step2: obtain the parameter information being connected to each client of AP from the wireless driving of AP, read the MAC Address of each client in described parameter information, and the MAC Address of each client is saved as wireless MAC address list;
The ARP list being connected to the client of upstream router by AP preserved by step3: establishment/tmp/arp file;
Step4: general/tmp/arp file copy is a, obtains a tmp/arp backup file, and to configure an initial value be the token variable of 0, meanwhile, general/tmp/arp file the clearing of ARP list information;
Step5: open/tmp/arp backup file, the MAC Address of the ARP list in reading/tmp/arp backup file and IP address, whether the MAC Address of the ARP list in judgement/tmp/arp backup file is included in described wireless MAC address list, if not, then this MAC Address and IP address are not saved in/tmp/arp file in ARP list in, continue ARP list in reading/tmp/arp backup file next MAC Address and IP address, if, whether the MAC Address of the ARP list in judgement/tmp/arp backup file is with identical from the MAC Address of the taking-up of system journal according to step1, if identical, then the IP address of the MAC Address of the taking-up from system journal and its correspondence be saved in/tmp/arp file in ARP list in, and the value of giving token variable is 1, if not identical, the MAC Address of the ARP list in/tmp/arp backup file and IP address be saved in/the ARP list of tmp/arp file in, continue ARP list in reading/tmp/arp backup file next MAC Address and IP address, the MAC Address of the ARP list one by one in reading/tmp/arp backup file and IP address, until ARP list content runs through in handle/tmp/arp backup file,
Step6: the value of judge mark variable, if the value of indexed variable is 0, then preserves the IP address of the MAC Address of the taking-up from system journal and its correspondence in the ARP list in/tmp/arp file.
Improve further as the present invention, before step1, also first the log information in AP system journal is filtered.
Improve further as the present invention, in step1, by " iwpriv rao show stainfo " order, from the wireless driving of AP, obtain the parameter information being connected to each client of AP.
When AP and up Dynamic Host Configuration Protocol server address pool not at the same network segment, the present invention is by safeguarding an ARP list of self-defined establishment, the IP address of each client got is preserved into ARP list, thus convenient acquisition is linked to the IP address of the client of AP, and then a series of IP address-based management is carried out to client.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that AP of the present invention obtains client ip address.
Embodiment
Technical scheme of the present invention is understood better in order to make relevant technical staff in the field, below in conjunction with the accompanying drawing of embodiment of the present invention, technical scheme in embodiment of the present invention is clearly and completely described, obviously, described execution mode is only the present invention's part execution mode, instead of whole execution modes.
The invention provides a kind of AP and obtain the method for client ip address, when when AP and up Dynamic Host Configuration Protocol server address pool not at the same network segment, AP can obtain the IP address being distributed to the client being connected to AP by up Dynamic Host Configuration Protocol server.
As shown in Figure 1, the invention provides the method that AP obtains client ip address, comprise the following steps:
Step1: the ARP information obtaining AP system journal, then from ARP information, take out MAC Address and the IP address of client.Due to, the amount of information of AP system journal is larger, in order to can Obtaining Accurate to about the MAC Address of client and the information of IP address, the present invention also first filters the log information in AP system journal, and useless information filtering is fallen.
Step2: ordered by " iwpriv rao show stainfo ", the parameter information being connected to each client of AP is obtained from the wireless driving of AP, read the MAC Address of each client in described parameter information, and the MAC Address of each client is saved as wireless MAC address list.
The ARP list being connected to the client of upstream router by AP preserved by step3: establishment/tmp/arp file.Namely ARP list is used for preserving the MAC Address of client and IP address, by safeguard/upgrade should/the ARP list information of tmp/arp file, realize obtaining the IP address being linked to the client of AP.
Step4: the ARP list safeguarding tmp/arp file for convenience, first general/tmp/arp file copy is a, obtains a tmp/arp backup file, and to configure an initial value be the token variable of 0, meanwhile, the ARP list information clearing of general/tmp/arp file.Tmp/arp backup file is used as the comparison of later step and judgement, after judgement, the MAC Address and IP address information that need the client of preserving is preserved the ARP list after resetting in/tmp/arp file.
Step5: open/tmp/arp backup file, the MAC Address of the ARP list one by one in reading/tmp/arp backup file and IP address, whether the MAC Address of the ARP list in judgement/tmp/arp backup file is included in described wireless MAC address list.
If not, then this MAC Address and IP address are not saved in/tmp/arp file in ARP list in, this illustrates that this MAC Address is not included in described wireless MAC address list, client corresponding to this MAC Address leaves AP, thus, do not need the ARP list again in/tmp/arp file to preserve, should delete.Judged this information, continue ARP list in reading/tmp/arp backup file next MAC Address and IP address.
If so, then the MAC Address continuing the ARP list in judgement/tmp/arp backup file whether with identical from the MAC Address of the taking-up of system journal according to step1.
If identical, then the IP address of the MAC Address of the taking-up from system journal and its correspondence be saved in/tmp/arp file in ARP list in, and the value of giving token variable is 1.
If not identical, the MAC Address of the ARP list in/tmp/arp backup file and IP address be saved in/the ARP list of tmp/arp file in, continue ARP list in reading/tmp/arp backup file next MAC Address and IP address.
The MAC Address of the ARP list one by one in reading/tmp/arp backup file and IP address, cycle criterion, until ARP list content runs through in handle/tmp/arp backup file.
Step6: the value of judge mark variable, if the value of indexed variable is 0, then preserves the IP address of the MAC Address of the taking-up from system journal and its correspondence in the ARP list in/tmp/arp file.This illustrates that AP newly increases connection client, MAC Address and the IP address information of this client obtain from system journal, and/tmp/arp backup file and tmp/arp file ARP list also do not have, step6 then direct AP is newly increased the client of a connection this situation of client MAC Address and IP address preserve in the ARP list in/tmp/arp file.
When AP and up Dynamic Host Configuration Protocol server address pool not at the same network segment, the present invention is by safeguarding an ARP list of self-defined establishment, the IP address of each client got is preserved into ARP list, thus convenient acquisition is linked to the IP address of the client of AP, and then a series of IP address-based management is carried out to client.
Below only have expressed one embodiment of the present invention, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (3)
1. AP obtains a method for client ip address, it is characterized in that: comprise the following steps:
Step1: the ARP information obtaining AP system journal, then from ARP information, take out MAC Address and the IP address of client;
Step2: obtain the parameter information being connected to each client of AP from the wireless driving of AP, read the MAC Address of each client in described parameter information, and the MAC Address of each client is saved as wireless MAC address list;
The ARP list being connected to the client of upstream router by AP preserved by step3: establishment/tmp/arp file;
Step4: general/tmp/arp file copy is a, obtains a tmp/arp backup file, and to configure an initial value be the token variable of 0, meanwhile, general/tmp/arp file the clearing of ARP list information;
Step5: open/tmp/arp backup file, the MAC Address of the ARP list in reading/tmp/arp backup file and IP address, whether the MAC Address of the ARP list in judgement/tmp/arp backup file is included in described wireless MAC address list, if not, then this MAC Address and IP address are not saved in/tmp/arp file in ARP list in, continue ARP list in reading/tmp/arp backup file next MAC Address and IP address, if, whether the MAC Address of the ARP list in judgement/tmp/arp backup file is with identical from the MAC Address of the taking-up of system journal according to step1, if identical, then the IP address of the MAC Address of the taking-up from system journal and its correspondence be saved in/tmp/arp file in ARP list in, and the value of giving token variable is 1, if not identical, the MAC Address of the ARP list in/tmp/arp backup file and IP address be saved in/the ARP list of tmp/arp file in, continue ARP list in reading/tmp/arp backup file next MAC Address and IP address, the MAC Address of the ARP list one by one in reading/tmp/arp backup file and IP address, until ARP list content runs through in handle/tmp/arp backup file,
Step6: the value of judge mark variable, if the value of indexed variable is 0, then preserves the IP address of the MAC Address of the taking-up from system journal and its correspondence in the ARP list in/tmp/arp file.
2. AP obtains the method for client ip address according to claim 1, it is characterized in that: before step1, also first filters the log information in AP system journal.
3. AP obtains the method for client ip address according to claim 1, it is characterized in that: in step1, by " iwpriv rao show stainfo " order, obtains the parameter information being connected to each client of AP from the wireless driving of AP.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310534007.7A CN104601737B (en) | 2013-10-31 | 2013-10-31 | The method that AP obtains client ip address |
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| CN201310534007.7A CN104601737B (en) | 2013-10-31 | 2013-10-31 | The method that AP obtains client ip address |
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| CN104601737A true CN104601737A (en) | 2015-05-06 |
| CN104601737B CN104601737B (en) | 2018-05-01 |
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Cited By (8)
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| CN104869553A (en) * | 2015-05-22 | 2015-08-26 | 上海斐讯数据通信技术有限公司 | Electronic equipment discovery method and apparatus, and router |
| CN105227695A (en) * | 2015-10-19 | 2016-01-06 | 深圳市华讯方舟科技有限公司 | Access point based on multiple VLAN obtains method and the device of client mac address |
| CN105682140A (en) * | 2015-12-31 | 2016-06-15 | 北京锐安科技有限公司 | Uplink and downlink judgment and shunting method and system for mobile core network user data |
| CN106231002A (en) * | 2016-07-22 | 2016-12-14 | 杭州华三通信技术有限公司 | A kind of method and device safeguarding ARP table |
| CN106559284A (en) * | 2016-03-22 | 2017-04-05 | 深圳Tcl新技术有限公司 | The method and device of STA reception states is detected at AP ends |
| CN108092842A (en) * | 2017-03-24 | 2018-05-29 | 深圳市必联电子有限公司 | A kind of router production test method for burn-recording |
| CN112272179A (en) * | 2020-10-23 | 2021-01-26 | 新华三信息安全技术有限公司 | Network security processing method, device, equipment and machine readable storage medium |
| CN115002071A (en) * | 2022-05-25 | 2022-09-02 | 深信服科技股份有限公司 | Information updating method, device, equipment and readable storage medium |
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| CN105227695A (en) * | 2015-10-19 | 2016-01-06 | 深圳市华讯方舟科技有限公司 | Access point based on multiple VLAN obtains method and the device of client mac address |
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| CN106231002A (en) * | 2016-07-22 | 2016-12-14 | 杭州华三通信技术有限公司 | A kind of method and device safeguarding ARP table |
| CN108092842A (en) * | 2017-03-24 | 2018-05-29 | 深圳市必联电子有限公司 | A kind of router production test method for burn-recording |
| CN112272179A (en) * | 2020-10-23 | 2021-01-26 | 新华三信息安全技术有限公司 | Network security processing method, device, equipment and machine readable storage medium |
| CN112272179B (en) * | 2020-10-23 | 2022-02-22 | 新华三信息安全技术有限公司 | Network security processing method, device, equipment and machine readable storage medium |
| CN115002071A (en) * | 2022-05-25 | 2022-09-02 | 深信服科技股份有限公司 | Information updating method, device, equipment and readable storage medium |
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Effective date of registration: 20201113 Address after: 221700 4-1-110-shop, Nanyuan new town, Fengxian County, Xuzhou City, Jiangsu Province Patentee after: Song Yixiao Address before: 201616 Shanghai city Songjiang District Guangfulin Road No. 4855 Building No. 90 big industry territory Patentee before: Phicomm (Shanghai) Co.,Ltd. |