Help with MS route & stop traffic between LANs?

  • Thread starter Thread starter icedvolvo
  • Start date Start date
I

icedvolvo

Hi People

I need a little hand with MS Windows and route.

Currently I have access to ADSL via a woreless link but this does not
allow me access to my work intranet. However I can access my work
intranet via dialup at the same time. BUT how do I ensure that no one
from the Internet can access my work intranet through my computer?

If this were UNIX I know how to do this but on XP I do not have a clue
how to stop traffic being able to traverse the networks.

Any suggestions on how to do this qould be appreciated and also how to
do this with a script would be extra good.

thanks

jon
 
There are several things that help prevent someone from accessing the work
network from another machine.

1) IP Routing is disabled by default. This means that packets will not be
forwarded through your machine, unless you explicitly turned it on.
The reg key is
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\IPEnableRouter
= 0x00

2) No route at the work network exists to get back to your subnet. The only
route the work network knows is how to communicate to your machine directly
unless you specify to add routes when you dial in which is highly unlikely.
There are ways to get around this ( NAT and ICS ) but again those have to be
explicitly set up in a particular config to allow access to your work
network.
 
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