i am trying to connect to multiple device through one wan ip but can only connect to main 3389 port forwarded device. the rest with same destination port but with different external port cant be register on ddns registration, please help.

[quote=Tommy Wong]i am trying to connect to multiple device through one wan ip but can only connect to main 3389 port forwarded device. the rest with same destination port but with different external port cant be register on ddns registration, please help.[/quote]Please refer to https://www.dynu.com/Resources/Tutorials/DynamicDNS/RemoteDesktop step3 to set up port forwarding for different devices.