I'm pretty familiar with setting up a VPN but a customer asked if we could NAT our servers to a range they provide and I'm not sure how this can be implemented.
Here's our setup (sanitized):
our side (10.1.1.0/24) <---> ASA <---> router <---> Internet <---> customer side (10.1.3.31/32)
We use the ASA for the L2L tunnels. I can set up the L2L tunnel above but the customer wants us to NAT our side using their range of 10.1.2.0/24.
Specifically, how do I nat our server 10.1.1.11 to 10.1.2.21 when going to 10.1.3.31 through the VPN? Basically, the customer already has routes set up for 10.1.2.0/24 so if we can do the NAT to that range on our end then they don't need to add any routes on their end. Keep in mind that our server 10.1.1.11 is also serving other customers so we only want the NAT to take effect when going to the specific customer 10.1.3.31.
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