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Windows 7: MAC Attack

15 Apr 2010   #11
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

I found this bit of old information

Quote:
Typically you would need to find it on one of your machine's arp tables. If there is a router in your network, this is usually the most central place to gather that type of info. On a cisco router, the command is "show arp" - it will give you a listing of the MAC addresses and their corresponding IP address. On a windows box, from a DOS prompt you can type "arp -a" to see similar output
.

My System SpecsSystem Spec
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15 Apr 2010   #12

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Somebody will only be able to see your MAC address if they are on the same subnet you are. Machines separated by a router will not see each other's MACs. To track someone on the internet via their MAC address would therefore require some external mechanism like a worm to feedback the IP address/MAC address relationship back to a central location. If tracing MAC address was a feasible idea, tracking stolen laptops would be far easier.
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15 Apr 2010   #13

Windows 7 Ultimate 32 bit
 
 

Jacee and Billw, thank you very much for this information and for teaching me.
My System SpecsSystem Spec
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15 Apr 2010   #14

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

Quote   Quote: Originally Posted by Jacee View Post
I found this bit of old information

Quote:
Typically you would need to find it on one of your machine's arp tables. If there is a router in your network, this is usually the most central place to gather that type of info. On a cisco router, the command is "show arp" - it will give you a listing of the MAC addresses and their corresponding IP address. On a windows box, from a DOS prompt you can type "arp -a" to see similar output
.
I ran it in command prompt as suggested, and it appears that the first MAC was fron my secondary rig. Therefore, I assume that is what the firewall said that it blocked. I didn't suspect this, because of the fact that my Windows 7 drive died, and the secondary is now running on XP MCE. I did attempt to set it up on the LAN a day or two ago, but I thought that had failed.

All that I did was to use the setup wizard in the secondary, which only had me to create a floppy to set it up in the primary, but when I ran it, it said that it had failed, and when I clicked on the Network link of the Start Menu, it didn't show anything from the secondary listed. Yet when I just checked again, it does list the secondary, as far as the main link, but not the media folders.

When I just checked the same in the secondary, it show an internet gateway and a LAN or High Speed Internet connection, but nothing related to files on the primary.

This network environment is beginning to make my head spin.
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15 Apr 2010   #15
Microsoft MVP

Windows 7 Ultimate 32bit SP1
 
 

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15 Apr 2010   #16

Windows 7 Ultimate 32 bit
 
 

Quote   Quote: Originally Posted by Jacee View Post
Now that is cool. I will install this on my wife's laptop. Thank you again.

Wow, do I ever learn here!

Edited to add: I love this little tip:

Quote:
The "Mac address" program can't send you a message if the computer is not online.
LOL
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15 Apr 2010   #17

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

[QUOTE=Jacee;686554]@ Bill2, How to Track a Mac Address From a Stolen Computer | eHow.com

Home.....


Attached Images
 
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16 Apr 2010   #18

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86
 
 

Quote   Quote: Originally Posted by Jacee View Post
Jacee,

1) How many of us have such a program installed on our laptop BEFORE it is stolen?

2) The "Mac address" program can't send you a message if the computer is not online. I doubt too many smart thieves go online with stolen laptops. AND, what happens if the thief hands it over straight away to a shady geek who wipes the hard drive straight away?

I was talking about real things.
My System SpecsSystem Spec
16 Apr 2010   #19

Windows 7 Enterprise (x64); Windows Server 2008 R2 (x64)
 
 

You can run a test here to make sure your firewall is working well:

https://www.grc.com/x/ne.dll?bh0bkyd2
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16 Apr 2010   #20

Windows7 Ultimate 64bit
 
 

This issue probably caused by an echo made by your network interface broadcasting to the network, then because of some peculiar instances, your switch directed the broadcast back to your computer... So basically it's talking to it self... MAC addresses are only used at "Layer 2", it won't make it to "Layer 3" (read my guide), thus concluding that it only used in a LAN, it can't go over the internet...

zzz2496
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 MAC Attack





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