sorry for reposting, the other forum was incorrect.
I cannot forward port 80 from WAN to LAN.
I have changed the local management port to 8080 and the remote management is disabled.
I don't have port triggering set up, only virtual servers.
Other ports work fine, only 80 does not. My ISP does not block any ports.
The service that is listening on the LAN is working correctly and is accessible from the LAN.
When I turn on the remote management on port 80, I get HTTP 403.
How could I resolve this ?