Victoria

You can use a DNS challenge to show you are in control of the domain without having anything exposed to the net. Essentially LE gives you a special value you have to add as a TXT DNS entry. LE will check if this record exists for your domain, and gives you a certificate, no public IP involved. This even allows you to create wildcard certificates.

Did you set the modem to bridge mode/DMZ, or alternatively set it to port forward to the router. The router should then port forward to the server.

Are you sure the IP address in duckdns is correct? Do you have a static or dynamic public IP, and if dynamic, how are you updating it?

i sometimes use one for certain tasks, where a big screen device is needed, but i don’t want to haul around my big laptop.

This is because it was posted using mastodon (look at the username), which works by tagging the community by url.

I am blind, this is a bot I am replying to.