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ASUS RT-AC66U B1 - Port forwarding not applying

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aitch

New Around Here
It's a classic post, I know...

Let me put down the basics:
  • ASUS RT-AC66U B1 Router
  • Firmware: 3.0.0.4.386_48262
  • Router WAN IP is the same as external IP (ie not CGNAT)
  • Attempting to port forward for Home Assistant on RaspPi, port 8123
  • Rule as follows
    • Internal Port should mirror External Port if left blank (have also tried with 8123 in Internal Port)
    • 192.168.1.199 is the static IP of my RaspPi
    • Source IP is blank to allow access from any external IP
r/HomeNetworking - Port Forward rule in place but port not actually open
  • Rule is in place in the Port Forwarding log:
r/HomeNetworking - Port Forward rule in place but port not actually open
  • Router has been restarted multiple times
  • DMZ Disabled, AiProtection Disabled
However.....
  • Using web tools, port shows as closed
r/HomeNetworking - Port Forward rule in place but port not actually open
Am I missing anything else?
 
Thanks for responding.

RaspPi should be actively listening on port 8123.
RaspPi firewall (if it has one) should allow non-local traffic on that port.
So I can access the Pi on 8123 locally, so I am sure that it is listening on that port. I think this is set by default as it is just running the Home Assistant OS.
I'm attempting to follow a fairly standard process of using DuckDNS etc, but just seem to be stuck on the port forwarding not taking on my router...
 
Solved with a simple port conflict. These had been set up automatically and were causing 8123 to be blocked. I have changed the Home Assistant port to 9123 and it opens successfully.
 

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