I don't understand when to set or unset the NAT button.
I have two servers on my LAN that are reachable on the same WAN with port mapping from WAN adress IP: port_to_translate to LAN IP: port_translated.
On the first server I have a SSH server without the NAT button set on the Policy and it works.
I can access the server from WAN.
On the second server I have a web server ( node.js) but I have to have the NAT switch set on.
If the switch is off , I can't access the server web.
In which case in port translate I need to turn the switch on or off in the policy?