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Question reqarding VPN and NAT

I have 4 sites all currently connected together via cisco's IOS VPN. Each site is using public IP addresses internally. My question is, is it possible to use NAT on the inner networks at each location.

for example

site 1 subnet = 192.168.1.0

site 2 subnet = 192.168.2.0

site 3 subnet = 192.168.3.0

site 4 subnet = 192.168.4.0

VPN Clients = 192.168.10.0

I also have a DMZ channel at site 1 that must use public IP addresses (no NAT) due to the web and email servers.

To throw a kicker in it, each site contains Novell 5.x servers that must communicate between themselves. No outside connection is required to internal NAT lans except via the VPN Clients. Since the routers will be doing the NAT and VPNs I don't see why this solution should not work.

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Re: Question reqarding VPN and NAT

You can use NAT with VPN tunnels. The following is an example -

http://www.cisco.com/warp/customer/707/overload_private.shtml

And there are other examples at the following URL -

shttp://www.cisco.com/warp/customer/707/index.shtml

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