I have a question, to which I think I know the answer. I have a SonicWall TZ 215 configured and working fine with a DMZ and ports mapped through to that DMZ, but the need has come up to map traffic through to a system on the LAN network. When I configured the NAT Rules exactly the same as the ones I have for the DMZ no traffic was allowed through to the LAN. So, my guess is when you have a DMZ configured, that you can only allow traffic through to that, because lets face it, mapping through to your LAN isn't the smartest thing to do. Here are some details.
FTP Traffic mapped through from WAN2 to DMZ address 193.193.193.X
My added configuration was
HTTP Traffic from WAN1 (Or all WAN) to LAN address 192.192.192.X
This just wouldn't work. Suggestions, assistance, help greatly received.