[Openswan Users] How to hide LAN

[Chris Purves]

I have set up openswan for ipsec over l2tp using certificates according 
to the following howto's:

http://www.natecarlson.com/linux/ipsec-l2tp.php
http://www.jacco2.dds.nl/networking/win2000xp-openswan.html

I have the connection working, but I would like to have it set up so 
that the roadwarrior machine (winxp) cannot see the LAN behind the 
server.  Essentially I would like the connection to allow the 
roadwarrior and the server to see each other, but nothing else.

How would I go about setting this up?

Thanks.

-- 
Chris