ASUS RT-AC66U B1 - Port forwarding not applying

[aitch]

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

• Rule is in place in the Port Forwarding log:

• Router has been restarted multiple times
• DMZ Disabled, AiProtection Disabled

However.....

• Using web tools, port shows as closed

Am I missing anything else?

 

[ColinTaylor]

Am I missing anything else?

RaspPi should be actively listening on port 8123.
RaspPi firewall (if it has one) should allow non-local traffic on that port.

 

[aitch]

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...

 

[aitch]

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.