We have two different locations, boths with ASA-5520.
Location "A" and Location "B" are private IP schema using Class C Addresses.
We have web servers, ftp, email and server apps on both, so we use NAT to allow traffic from the internet.
Both locations have a pool of Public IPs from the ISP (they are different ISP by the way)
Both locations are connected using a VPN (meaning that if I sit on Location "A" I can see everything on Location "B"
Now, on Location "A" I have a VPN with one Customer, from my ASA-5520, and one of my servers "A-1" access the Customer's Server using their public IP. We have a static NAT, so the Customer sees one of my Public IPs, and not the real from my server "A-1". Everything fine so far.
The thing is, now we have to access the same Server (on the customer side), but from server 1 on Location "B" and we can not open a new VPN with the customer or alter the VPN already in place.
My question is:
Can I somehow make a route on ASA-5520 on Location "B" that when my server "B-1" tries to connect to the customer's public IP, instead of going to the internet, goes to my ASA-5520 via my VPN and then from there to the Customer with the other VPN?
I'm trying to prepare a diagram for that.