Unable to telnet my WAN IP from DMZ network

[adity]

Hi Techies,

 I need your help in one of the problem, I have a FPR 1120 manage by FMC on FPR we have 3 zones.

Inside 

Outside ---- IP : 204.42.3.3 ( configured on Outside FW WAN interface)

DMZ ----- IP : 192.168.25.15 ( configured on Hst machine).

I am trying to configured a NAT as I need to access my WAN IP with port 603 from DMZ side,

 Could you guys pls help me to understand what exact configuration is required to do on FW. 

[MHM Cisco World]

You can not do that in both FTD and ASA 
you can not access FW interface not direct connect to 

MHM