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Tracking Down Unknown IP Address


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nsandestin's Avatar
nsandestin nsandestin is offline
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28-Jun-2006, 03:08 PM #1
Tracking Down Unknown IP Address
Hi,

Is there anyway to track down who/what/where an IP Address is connected to by only having the IP address. I know that it can't me physically where but something to tell me what type of device is using it would be very helpful. I just started working for a company and there are a few static IP addresses that no one knows what/who/where they belong to. I tried using LANSurveyor but it wouldn't return any data on the end systems. Besides unplugging them from the switch and waiting for something to crash/someone to scream, does anyone have anyother suggestions on how to track this down?

Also, I used a tracert command and that didn't return anything either...

Thanks for the help!

Noah
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28-Jun-2006, 03:21 PM #2
Try the nbtstat command?
Run SNMP trap on the IP to see if it gives you any information on the device connected?
Try connecting to the IP with a web browser and see if it has any web interface?
nsandestin's Avatar
nsandestin nsandestin is offline
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28-Jun-2006, 04:06 PM #3
No luck....

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mf-tech mf-tech is offline
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28-Jun-2006, 05:26 PM #4
If you use StumpedTechy's suggestion, using nbtstat -A xxx.xxx.xxx.xxx it will return the machine's name(1st entry) and MAC address(at bottom), that is, if it is a computer. The name may give you a clue to where the device is located. If there is no name then it is most likely a network device. Using the MAC address, you can go to the following website to find the vendor associated with the MAC. http://www.coffer.com/mac_find/ Sometimes knowing the vendor of the network card can point you to the computer.
Hope it works in finding the needles in the haystack.
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29-Jun-2006, 12:49 AM #5
If it is a computer that logs into a Domain on Netware network, you could create a login script that tells you computer name, login name, etc, etc....

I would also run a little program called NBTscan to see what info it comes up with.
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axis77 axis77 is offline
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29-Jun-2006, 02:38 PM #6
if this ip is on your local domain or network then why not ping it with -a to see if comes back with a name if its a pc ex. ping -a 192.248.564.54...if its a device like router, switch, or printer well have fun with that....also this company you work for does have a list of all ips being used....
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O111111O O111111O is offline
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29-Jun-2006, 02:47 PM #7
Do all of the above, then download nMAP from sourceforge.

nmap -sS -O xxx.xxx.xxx.xxx will tell you what TCP ports it's listening on, attempt OS detection, and if it's a winders machine will tell you what release/hostname/etc.
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