@Yannie My server is working fine on the lan 2 and is reachable from other computers in lan 2 network! I know this device has too many functions for what I want to do. It is a temporary installation...

Hello Poeple, I'm really stuck because I can't use this router like a conventional nat router! For a temporary application, I would have liked to use it to access from the WAN port to a single device...