Local Network https:// connection problem

I am using Home Assistant server connected to 5Ghz wifi home network. I have done duck dns installation and configuration regarding SSL configuration. I also turned on the use of SSL. There is no problem when I connect from the Mobile Network.
Mobile: https://xxx.duckdns.org:8123 connection is normal.
Wifi 2.4 Ghz :https://xxx.duckdns.org:8123 connection is normal.
Wifi 5_Ghz : https://xxx.duckdns.org:8123 Unable to connect.
Wifi 5_Ghz :https://xxx.xxx.xxx:8123 connection is not secure
I am getting a warning. I’m asking for help from friends who have an opinion on the subject.

Kind regards…

You won’t be able to connect via the internal IP address using https unless you’ve set up a self-signed certificate, but for internal network stuff http should be fine.

I’m not sure why you can’t connect to the duckdns url from your 5Ghz network, though. Perhaps an issue with your reverse proxy?

1 Like

I don’t know much about reverse proxy. I’ll do some research and try the suggested apps, thank you.

Hello, I have done the necessary installations with Duck Dns and ngix.
But the situation is still the same. Although I cleared the browser and pc cache, the result did not change.

In 2.4Ghz wifi network: https://xxx.duckdns.org the connection is normal safe.

https://xxx:8123 no connection.

http://xxx:8123 connection normal insecure.

On 5Ghz wifi network:
https://xxx.duckdns.org no connection…

https://xxx:8123 no connection.

http://xxx:8123 connection normal insecure.