RP4VM: NAT settings for WAN network ?

Hi,

Do you support NAT address for WAN network ? Is there any settings available to add NAT address?

Overview:

Actually... we are creating a RP4VM 4.3 development lab which is similar to vLab. Basically vRPA VM's are deployed on virtual ESXi's. As those are nested VM's inside vESXi... we are using NAT address to ping the WAN network outside the lab ( from my desktop).

LAN network                    =     192.168.2.x   

WAN network                  =     192.168.250.x

NAT for WAN network     =     10.7.102.x

RP4VM system connectivity test is fine with LAN and WAN network. I can access those WAN network ip-address inside the lab. But, when I try accessing through NAT address from outside the lab... it is failing. I can't even ping the NAT ip-address.