Access point, access controller and method for monitoring illegal access

An access controller and access point technology, which is applied in the direction of data exchange, digital transmission system, and electrical components through path configuration.

Inactive Publication Date: 2007-11-28
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the disadvantage of the prior art is that the detection of whether the AP is legal is mainly based on the MAC address of the AP. Therefore, if the illegal AP intentionally imitates the identity of the MAC of the legal AP in the WLAN, the illegal AP reconfigures its hardware MAC address. , making it the same as the MAC address of the legitimate AP, the existence of such an illegal AP cannot be detected

Method used

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  • Access point, access controller and method for monitoring illegal access
  • Access point, access controller and method for monitoring illegal access
  • Access point, access controller and method for monitoring illegal access

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Embodiment Construction

[0047] Hereinafter, the device, computer software product and device of the present invention will be described in detail with reference to the accompanying drawings.

[0048] As shown in Figure 3, the method for monitoring illegal AP in the wireless local area network of the present invention, comprises the following steps:

[0049] Step 31, adding a preset legal AP identification in the beacon frame broadcast by the legal AP in the wireless local area network;

[0050] Step 32, the monitoring AP of the wireless local area network monitors the current channel, and judges whether the monitored beacon frame contains the legal AP identification, if yes, determines that no illegal AP is currently detected, returns to step 32, otherwise enters step 33;

[0051] Step 33, APs that broadcast beacon frames that do not include the identification are illegal APs.

[0052] As shown in Figure 4, the step 31 may include the following steps:

[0053] Step 311, sending the preset legal AP ...

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Abstract

The invention discloses a switch-in point controller and illegal switch-in monitoring method in the LAN, which comprises the following parts: legal AP mark receiving unit, which reserves the legal AP mark in the wireless LAN; detecting unit, which monitors beacon frame of the wireless LAN in at least one channel to affirm AP corresponding to the beacon frame as illegal AP if the monitored beacon frame doesn' t contain the legal AP mark. The invention judges the illegal AP according to the legal switch-in mark effectively, which can remove the relationship of wireless working station and illegal AP to ensure the safety of network.

Description

technical field [0001] The invention relates to a wireless local area network (WLAN), in particular to an access point in the WLAN, an access controller and a method for monitoring illegal access. Background technique [0002] Wireless local area network (WLAN, Wireless local area network) technology is based on the 802.11 Media Access Control (MAC, Media Access Control) standard proposed by the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers), which defines the wireless workstation ( Air interface specification between STA, Wireless Station) and access point (AP, Access Point). The STA is a client of the wireless network, specifically a computer including an 802.11 wireless network interface card. An AP is similar to a base station in a wireless network. It can create a set of basic services and bridge a large number of STAs from a wireless network to other existing wired networks. The STA communicates with the AP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/28
Inventor 张海涛萨奇恩
Owner NEW H3C TECH CO LTD
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