I'm trying to setup a somewhat unusual setup, and I'm not sure if it is even possible. I was hoping someone could give me some tips or topics to search for to point me in the right direction.
I have a production network on 10.x.x.x and I want to setup a mirror of this network on an ESXi box for testing purposes. If possible, I'd like to set it up so that the testing network has the same IPs as the production network. Accordingly, I was hoping it would be possible to set up a pfSense VM as the gateway to the private network in the ESXi box doing NAT such that the production network sees the testing network at 10.128+x.x.x and vice versa. I.e. if I have boxes on my production network at 10.2.3.4 and 10.5.6.7, I want to be able to ping 10.130.3.4 from 10.5.6.7, have it routed to the pfSense VM, which NATs the destination to 10.2.3.4 and the source to 10.133.6.7 and the passes it on into the private network contained in the ESXi box, and vice versa from pinging from inside the test network.
Is this doable with pfSense? If so, how?