Method and system for detecting rogue wireless access point in local area network

Abstract

The invention discloses a system and a method for detecting a rogue wireless access point in a local area network. The system comprises a database, a wireless monitoring module and a central processing unit, wherein the database is used for storing the corresponding information of a legal wireless access point in the local area network in a legal list; the wireless monitoring module is used for periodically scanning each channel in the local area network to acquire identification information from the channel, and used for testing a suspected wireless access point determined by the central processing unit, trying connecting the suspected wireless access point in a management mode, and further trying connecting a plurality of legal nodes in the local area network by the suspected wireless access point if the connection is successful; and the central processing unit is used for comparing the identification information of an existed access point acquired by the scanning with the corresponding information in the legal list, and listing the wireless access point not occurring in the legal list as the suspected wireless access point and judging that the suspected wireless access point is the rogue wireless access point if successfully receiving the feedback information that the suspected wireless access point is successfully connected with the legal nodes from the wireless monitoring module.

Description

technical field [0001] The invention relates to the field of wireless local area networks, in particular to a method and system for detecting illegal wireless access points in a local area network. Background technique [0002] As a globally recognized authority on LANs, the standards established by the IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) Working Group 802 have dominated the LAN field in the past two decades. These protocols include 802.3Ethernet (Ethernet) protocol, 802.5Token Ring (token ring network) protocol, and 802.3z 100BASE-T Fast Ethernet protocol. In 1997, after seven years of work, IEEE released the 802.11 protocol, which is also the first internationally recognized protocol in the field of wireless local area networks. In September 1999, they proposed the 802.11b "High Rate" protocol to supplement the 802.11 protocol. 802.11b added two new network throughput rates of 5.5Mbps and 11Mbps under...

AI Technical Summary

Problems solved by technology

[0007] Illegal wireless access point (Rogue AP) is the biggest security threat in WLAN. Hackers, malicious employees, or unintentional employees who do not consider the consequences just to improve work efficiency place unauthorized APs in WLAN ( Access Point, access point) or ...

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