How can I scan personal computer with firewall up that is on my network?

Someone has attached a personal computer to the network in a remote office and I would like to find out more about the PC. All I can see is the machine name and IP address in DHCP manager on Windows 2003 Server.

If I ping the computer nothing comes back and if I try to open the c$ share the network path is not found. If I try to manage it through Windows XP I get path not found.

Is there anything I can do to access or scan this PC to find out more about it? Like - operating system, user who is logged onto it, manufacturer, or to confirm if the PC is actively connected to the network?


Thanks,
Bob
LVL 6
ob1_Asked:
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TCB1Commented:
These utilities might help. However, if the machine your trying to scan it firewalled it may all be in vain.

http://www.radmin.com/products/utilities/
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ob1_Author Commented:
I am pretty sure it is. I guess I could just deny it an IP in DHCP admin and see who calls me to complain. Any other ideas?
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TCB1Commented:
You could look up the manufacture via MAC address of the NIC and that will give a clue of what type of system it is. Still it won't give you a lot of info, but if the NIC manufacture info said "Apple" then you would know it's a Mac for example. Also you could do some sort of packet sniffing on that ip to get a clue of the OS. (http headers and such) But that might be considered invasion of privacy, so be careful with that idea. Your the best judge for that.

http://curreedy.com/stu/nic/
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ob1_Author Commented:
Really? Interesting. I would think any data on the company network is open for sniffing. You bring up a good point.
I will look up the MAC address good idea.
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ob1_Author Commented:
Great trick!
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