This has already been discussed (link off of Slashdot) and works under linux for
packet filtering. I have no idea if it could be done under FreeBSD.
-Kip
On Thu, 14 Feb 2002, PSI, Mike Smith wrote:
> I just heard someone say that they believed that the kernel was still
> running after a halt is issued, but just cannot (won't?) create any
> processes. So while I realize this person may not know what they are
> talking about (and am showing my own ignorance for even listening), the
> question is...
>
> Is the kernel still running after a halt?
>
> If it is, then there are very interesting possibilities for building in
> very specific capabilities in the kernel, then under "halt" condition
> have those capabilities available. AND NOTHING ELSE! Interesting from a
> security standpoint. Plus it would not require to to strip your system
> down to bare bones to eliminate holes. You could bring it up to a fully
> capable system at any time it was necessary.
>
> So Is the kernel still running after a halt? If so, has anyone found a
> way to take advantage of this?
>
> (Not THE) Mike Smith
>
>
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