NAT converting original IP to another Fake IP

[joaoafricano]

How to Convert an original IP on LAN NIC to respond with an fake IP address
Eg.

Internal Network 192.168.0.0/24 –--- Lan NIC 192.168.0.254 -------WAN Nic 200.x.x.x

I want to respond from any internal IP to WAN with a specific IP 10.0.0.1

Internal Network 10.0.0.15/8 (192.168.0.0/24) --- Lan NIC 10.0.0.1(192.168.0.254) ----WAN Nic 200.x.x.x
                      (Fake)      (real Address)          (Fake)              (Fake)

Please HELLLLLPPPPPPP... Urgent

[dvserg]

I want to respond from any internal IP to WAN with a specific IP 10.0.0.1
Private address range 10.x.x.0/24 not accessible from externl network adresses. Only NAT and Mapping technology can be use for this.

[dotdash]

I think he wants another network aliased on the LAN. AFAIK, the only way to do this currently is with a VLAN switch.

[jahonix]

@joaoafricano:

I want to respond from any internal IP to WAN with a specific IP 10.0.0.1

I read it this way that you want your WAN to look like 10.0.0.1
That would be a privat network not intended to be routed outside.

Maybe if you describe the problem you want to solve there might be other work arounds…

[joaoafricano]

Here is the problem I Have.

I have a VPN with a Banck and the VPN only stabilish width a especific IP Eg. 78.10.1.97/28
in my network side, but my network is 192.168.0.x/24. Now I use to Pfsense, one with the lan with 78.10.1.100/28 and the whan configured to ISP. The other is configured width a WAN 78.10.1.97/28 and the lan 192.168.0.254/28. And I whant to use only one Pfsense and use the other to do the same width the same Banck but width other ISP to prevent Problems width connection problems and fault toleranci.

[joaoafricano]

I Alread Try to put the 78.10.1.97/28 addres in the Lan and conect other computer to a OPT1 and make a rule to pass all trafic from that OPT1 to the Banck Address Thru the lan  but the VPN not Estabilish. The vpn only work when that especific address is in My network