[nsp] NAT and VPN

Krzysztof Adamski k at adamski.org
Fri Nov 21 16:12:28 EST 2003

I need to join two networks, and I need to NAT some hosts.

The network looks like this:

HostA ---- Router A1 ---- Router A2 ---- Router A3 --- Internet

Internet --- PIX B --- net B

Currently Host A is and needs to be visible as to
net B network.
Router A3 has a single static IP for connecting to the Internet. This is
where the VPN to the PIX B is going be setup. I would prefer to do the NAT
on A3.
net B is /26
Nothing else is to go though the VPN.

The connection between net B and HostA has to be bidirectional, there are
4 more machines like HostA, each is to have a uniq IP.
How should the NAT be setup, and how this will interact with the VPN?


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