Configure DLink DSL-2750U for Port Forwarding using port 80 is a real pain and time consuming process. Was stucked at error “Since port 80 is used as http remote access port. External Port range 80-80 is invalid” for hours looking at all the options available. There’s no clear indication on the menu which shows how to disable or change the http remote access port.
Here’s how :
· Click on MAINTENANCE – ACCESS CONTROLS – SERVICES – REMOTE ACCESS CONTROL – SERVICES.
· Select HTTP = Enabled. Change the port from 80 to 8080 or different port.
· Click APPLY.