Firewall rule not working

I searched and could not find my exact answer. The Pi box will not respond over the internet but responds fine on the local network.

I cannot get any external IP to connect to internal IP with port 8000. I cannot find a firewall on the Pi nor does the application have an IP address blocker/limiter.

I have two screenshots and it will only let me put one so here is a link to the PDF with both images:


Please read through this:


And I strongly recommend considering placing your Pi device in the DMZ. And reading through the DMZ docs:

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Thank you. Finally got it to work using the NAT instead of external rule. The external port is now IP limited so no DMZ should be fine.