MacOS X 10.1.4 MAC Address Spoofing

From: Juan M. Courcoul (courcoul@campus.qro.itesm.mx)
Date: 05/26/02 

Date: Sun, 26 May 2002 01:11:36 -0500
From: "Juan M. Courcoul" <courcoul@campus.qro.itesm.mx>
To: vuln-dev@security-focus.com

I was recently discussing how MAC addresses can be spoofed in Ethernet
adapters and was told that "you can't spoof MAC addresses on MacOS X,
especially with version 10.1.4". I've tried playing around with various
ifconfig parameters with no success, but I may be overlooking something
and spoofing might be doable. Then, also, there might be exploit code
floating around to do this.

Is MacOS X spoof-proof out of the box ? Is it spoofable with additional
software ? We may be setting up a student lab with the new e-Macs and
I'd like to ascertain whether you can trust a Mac MAC address for
authentication purposes or not.

Thanks,

J. Courcoul

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