Is there a trick to forwarding port 80?

[ParticleBeam]

I think I know why forwarding port 80 isn't working. -- It actually is, but my ISP is blocking it.
I feel like an idiot. :P

Thank you...

[ParticleBeam]

Thank you dwasserman. I do have a dynamic IP, but there's not an option for a Destination Interface. See image below.
I did try my current public...

[ParticleBeam]

Thank you, jcoffin, but I've already done that.

I've moved the service port from 80 to 84, but port 80 is still not forwarding as expect...

[ParticleBeam]

I'm trying to route port 80 from outside my network to a reverse proxy inside my network.

I have the port forwarding rule set to: Destined...