On Thu, Jun 28, 2012 at 4:39 PM, Rick Hodgin <[email protected]> wrote: > That's been my point all along. Out of band in this context means the OS and > hypervisor and any security running on the computer itself is on the other > side of these communications. It's happening outside of the frame of > reference of their observation.
Sure. But there's a MAJOR difference between out of reference of one computer's operation, and out of reference of every computer on the network's observation. And when you talk about an ethernet frame being out-of-band, you're talking about the latter. It's not out of band, because the switch had to be aware of it in order to route it to your NIC. Covert communication through the power supply by artificially loading the GPU (CPUs are too obvious), to spike power usage in such a way as to produce morse code dots and dashes someone could only decode if they knew they were there, and monitoring the power usage of the machine is out of band. Sending an ethernet frame is just sending an ethernet frame. --tim _______________________________________________ Freedombox-discuss mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/freedombox-discuss
