On Feb 2, 22:38, Tothwolf wrote:
> Of course, there is a conceptually simple way to prevent 99.9% of people
> from accessing a lan in this kind of situation. Wire the wall-mounted
RJ45
> jacks to use the normally unused pairs for TX/RX, and use custom made
> patch cables to connect to the computer's NIC. For some ultra-secure type
> site, wiring the other two pairs to detect a connection, and or to
deliver
> 48VDC (from a spare telephone switch supply) would deter all but the most
> determined.
We've actually investigated this :-) I'll merely say that it will work,
but only where the socket on the PC's NIC is physically inaccessible, such
as in the case of our classroom PCs which are mounted in stell cuffs.
Otherwise, of course, the miscreant simply unplugs the PC end of the patch
cable. There are some liability issues too (post a warning notice).
--
Pete Peter Turnbull
Network Manager
University of York
Received on Sun Feb 03 2002 - 06:00:49 GMT