Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-08-16
2011-08-16
Desir, Pierre-Louis (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S410000, C455S411000
Reexamination Certificate
active
08000698
ABSTRACT:
A method of detecting rogue devices that are coupled to a wired network without generating false negative or false positive alerts is provided. When a wireless monitor detects an observed SSID and/or BSSID, various tests are run to determine whether the observed device is actually coupled to the wired network. To guard against the suspect device spoofing an authorized SSID and/or BSSID, location information is gathered so that the network administrator can pinpoint the location of the rogue device. If the device is not recognized, various other tests are run to determine whether the unrecognized device is actually connected to the wired network. These tests include an association test, a MAC address test, an ARP test, a packet replay test, a correlation test, and/or a DHCP fingerprint test. Once it is determined that the suspect device is a rogue connected to the wired network, an appropriate alert is generated.
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TCP/IP Tutorial and Technical Overview, © 2002 by Rodriguez et al., pp. 126-136.
Bahl Paramvir
Chandra Ranveer
Padhye Jitendra D.
Singh Manpreet
Sivalingam Lenin Ravindranath
Desir Pierre-Louis
Microsoft Corporation
Schwartz Joshua
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