RE: Allowing only 1 interface to connect to a network

["ListServ" <knothead () clarksoncollege edu>]

Chances are you going to have to look at your routing table on the local machine. Depending on how you what the packets 
to flow use trace route to figure out which way data is going -- thru the moden or the dial-up connection. It is 
possible to dual gateway connections. Again look at your routing table how you want the data to flow.

________________________________

From: Pranav Lal [mailto:pranav.lal () gmail com]
Sent: Sat 10/1/2005 11:57 AM
To: security-basics () securityfocus com
Subject: Allowing only 1 interface to connect to a network



Hi all,

Suppose my computer is on a LAN. I have a modem connected to it. If I
dial out via the modem, my computer will have 2 ip addresses; one
from the LAN and 1 from the dialup modem. Is there any way to not
allow such a simultaneous connection? So, if I am on the LAN and if I
try and dial out, the computer blocks that feature? or the reverse,
that is if I am  on connected dialup and  I connect to a LAN the LAN
connection is not allowed?

At the moment I am looking at Windows xp, 2000 and 2003 server.
However, I would also welcome tips on how to accomplish this in
linux, solaris etc.

Pranav

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