how do you remove a device from AD NEED Answer ASAP

A device showed up today on our network.  I can see the name and the IP but I can't access it.  I need to remove it ASAP.  HOW?
J.R. SitmanIT DirectorAsked:
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Cliff GaliherCommented:
You can see the name and IP where?? DHCP? DNS? ADUC (which usually doesn't show IP addresses?) The question is vague and so far the goal isn't clear.
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J.R. SitmanIT DirectorAuthor Commented:
Using WSPing.  see attached.  I don't see it in DHCP or DNS
dhcp3.png
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Cliff GaliherCommented:
Well, if it isn't in DHCP, DNS, or ADUC then it *probably* means someone simply plugged in a device on an unsecured port or on an unsecured AP. An IP scan doesn't mean the device is in AD. So removing said device can take anything from physically inspecting each switch and securing APs to using something like 802.1X or MAC filters to attempt to lock things down.
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J.R. SitmanIT DirectorAuthor Commented:
Thanks, Cliff.  You put me at ease.  I don't think there is an issue
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cantorisCommented:
You could inspect your switches' CAM Tables to find which switch port the device is on, look up which physical wall port that is, visit it and then give the person responsible a clip round the ear  :)
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J.R. SitmanIT DirectorAuthor Commented:
We don't have smart switches.  Just basic
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J.R. SitmanIT DirectorAuthor Commented:
Thanks
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