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12.02.2007 at 12:30PM PST, ID: 22996393 | Points: 125
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Cisco site-to-site VPN with NAT address to third network

Asked by raywu168 in Cisco PIX Firewall

Tags: , ,

Hello, thanks for review my post.

This maybe an easy one, but I just could not find any good document on the net.  I have three interfaces on my PIX 525, 6.3(3);
inside (192.168.x.x)
outside (67.x.x.x) and
DMZ (172.16.x.x)

I have a Pre-share site-to-site VPN tunnel setup just like the one in Cisco's PIX firewall and VPN configuration guide.  My hosts in inside network have no problem communicate with remote site using their native IP addresses, (192.168.x.x  <---> 10.20.x.x).  My inside hosts communicate with DMZ host by NAT their address from 192.168.x.x to 172.16.x.x.

How can I create a 1-to-1 NAT for remote host to DMZ.  A host in remote  site need to communicate with host in DMZ, DMZ hosts will only accepte IP address in 172.16.x.x.  I have seem some documents on the net relate to open port 4500 and others, but just could not find a good example that match my situation.  

Can some one show me a good example (URL) or documents, I can post my configure if I have to.

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[+][-]12.02.2007 at 08:23PM PST, ID: 20393632

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20081112-EE-VQP-43 / EE_QW_2_20070628