I suppose there is some truth in your assumptions, but I'm not sure a proper court of law (rememeber where this discussion startted) would take it at face-value that since a packet appeared to arrive from a particular MAC address then it proves 100% that this MAC address was the actual source of that packet, at least not without other supporting evidence.
My previous ADSL Alcatel modem was claimed to be completly and uterly hackable, so I wouldn't be surprised if someone could crack into its Linux-based system and forge addresses in it.
I heard that in recent years all ethernet interfaces menufactured were created with re-programmable MAC address simply for the convenience of the menufacturer.
--Amos
Ilya Konstantinov wrote:
On Wed, Dec 10, 2003 at 11:13:06PM +0200, [EMAIL PROTECTED] wrote:
Guy Teverovsky wrote:
Hint: cable modem MAC address which can be easily tracked.
And forged, therefore proving nothing, as far as I can tell.
Constructing your own cable modem or burning a new ROM for an existing cable modem is too complicated for the common attacker. Being able to forge the MAC address of the cable modem also opens wide opportunities for so-called "theft of service", but it's hard enough so cable companies don't have to worry about it.
(Of course, no cable modem allows you to update its MAC address via software, as per DOCSIS specs.)
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