[Freedombox-discuss] Without software collusion
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On Thu, 28 Jun 2012, Tim Schmidt wrote:
> "Out of band" means other than the communications medium being
> discussed. If it travels over the ethernet wire, it's ethernet, and
> explicitly NOT out of band. Ditto Wifi.
In the case of vPro, "out of band" means that it's using the same wires
(or frequency) that the NIC is connected/tuned to, but it's being
processed outside of the OS's. So before your software firewall even
sees the packet come in, the NIC consumes it and passes it along to the
vPro chip to be handled. Since these control packets are not TCP/IP and
not using the OS's networking stack, they can't traverse network
segments (routers) unless explicitly forwarded.
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