Say i dont want to type 192.168.1.100:8096 and want a url instead, say jellyfin.servername - how would I go about that? I don't want it exposed online via reverse proxy. I don't need certs. No port forwarding on the router.
How do I type 'jellyfin.servername' into a browser and being up the jellyfin dashboard?
You can add an entry to your /etc/hosts file for the IP part, but this cannot remove the need to specify the port number as it is unrelated to the domain/IP
If you have your own DNS server you can set a hostname there like 'jellyfin.myserver' and have that accessible from your internal network. If you want to do so on your PC you can edit your hosts file to add a custom entry. https://www.hostinger.com/tutorials/how-to-edit-hosts-file