4 Feb
2004
4 Feb
'04
03:49
On Tuesday 03 February 2004 9:35 pm, Carlos E. R. wrote:
MAC addresses were supposed to be world wide unique: a part of the address identified the card maker, the rest the card itself; of course, that doesn't mean you can find any computer given the mac address. And MAC addresses can be spoofed, so all this might not be true nowdays.
The confusion arises because what is true in particular is not true in general. For Comcast customers (and presumably those of some other net vendors also) it is true that you can find the hostname of the customer's computer if you know its MAC address. But it is emphatically not true that you can find the hostname (or IP address) of an arbitrary computer, given its MAC address. Paul Abrahams