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 From:  Eternal Security <veptune at wanadoo dot fr>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Problem of NAT between a PPTP interface and a LAN interface
 Date:  Fri, 11 Jun 2004 09:12:20 +0200 (CEST) 
Hello alll.


Here is my network :
------------------------


			VPN user (local adress 192.168.0.0/24 , vpn adress 192.168.1.192/28
					|
					|
					|
		router of customer (named router 2)
					|
					|
					|
		                 INTERNET
					|
					|
					|
					|-wan interface : public adress
			         m0n0wall
					|-lan interface : 192.168.0.1
					|
					|
		         192.168.0.0/24 network


If a VPN user want to ping 192.168.0.2, his local workstation will send the packet on the LAN of the
foreign network, not on the PPTP connexion but how to solve it ???


Is it possible to etablish NAT between PPTP interface and LAN interface ?
It will be not outbound mapping because the "target" must not be a public interface and this type of
NAT will not be an inbound mapping because packets will not be from the WAN interface.

Can anyone help me please ? i can't change network adress of the foreign network.

thanks in advance, best regards