Cannot access webgui outside internal networking

[andrewkuo]

Hi there
The issue I met is quite simple that I cannot access web gui from internet even the port forward in my router has been set as 80 to 80 of where Freenas is.

I can access webgui by intranet without issue.

Would be appreciate for any help on this. Thanks.

My FREENAS reversion is 8.0.1 RC1.