To enable external access go to your profile.Then enable the advanced mode and go to Settings > System > Network.Here now you can add the external address. It should enable external access.
I put an external_url in my homeassistant: of the configuration.yaml and (I think this is what did it) In System → Network I set a static ip and set the DNS Servers to 8.8.8.8. Now it says external access enabled.
Thank you for your clear and concise procedure for adding external access to HA. I have tried to use this, but am not able to get it to work. For some context, I have a containered version of HA running on RPi-4 with external access and no issues, but I have recently tried using HA OS on RPi-4 due to the add-ons and remote access features that are built in. I am able to access my HA instance through the local address or through the external address (my DDNS URL) when I’m on my local network, but I am not able to get access when I am on any other network. So, I know my port forwarding is working and I know my DDNS/URL are working. I have enabled remote access using advanced mode in HA and followed all of your procedure, but I am still not able to get fully remote access. Any thoughts on this issue?
Sorry for the late reply. Maybe try to ping you network DDNS URL and see which IP it hits? like ping in local vs in other network? My suspicion is that your local network is hitting local IP and external URL is trying to reach local IP?
Thanks for getting back to me. I was able to get a public IP address added to my ISP account and this has helped a bit, but I am still only able to use the “public IP” to access my HA instance when I am on my local network. I tried swapping the HA-OS version that is currently not allowing for external access for the containered version I have running elsewhere that is allowing external access to see if it was an issue with my equipment or thost of the ISP. Since I continued to have the same issues with the containered version, I am guessing it is an issue with the ISP. I will continue to troubleshoot, but for now I have been able to get remote access using tailscale VPN. This is not ideal for my implementation since I will need to give access to perhaps dozens of users when the netword of sensors are all installed, but it does allow testing right now. Thanks again!
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