DDNS dedyn in OpnSense 26

[GioSomma]

I need to set up DDNS on OpnSens, version 26.1.6.
I registered my domain and loaded the following into the ddclient plugin:
username = my-domain . dedyn . io
password = Token
I’m not sure where to put in ddclient the URL and what to put in Hostname.

I mainly need it to generate Let’s Encrypt certificates so I can have HTTPS on the firewall and on a couple of devices on the LAN.

At the moment, I don’t think there’s anything I can use externally; it’s just to avoid getting the error message every time I call a web app with HTTPS.

[KapernMagIchNicht]

Step 1:

Step 2

Step 3

then change the preinstalled cert of opnsense with the one you created here. System → Settings → Administration