2 Feb
2002
2 Feb
'02
10 p.m.
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