1:1 NAT with multiple gateways to a single (LAN) host

[spencerryan]

Hey all,

Here is what I'm trying to do, and I need to know if it's possible.

(Oversimplified for ease of explination)

Two ISPs, and a server. pfSense is set up with multiple gateways and that works, I can yank the primary link out and it starts using ISP 2.

What I need to do is 1:1 NAT to the server, but I need a 1:1 NAT from each provider. If ISP1 is up the 1:1 should use that, and if not it should use the correct IP from ISP2.

Possible?

Thanks,
Spencer