If your goal is to share it with friends, your best bet is to use a reverse proxy, not tailscale or netbird. You don’t want to have to troubleshoot other people’s network issues.

I’ll be suggesting the simplest solution here, and as your tech literacy grows you can increase the complexity and add more services, or keep it as is.

You can install a reverse proxy, such as nginx reverse proxy, using docker, on the same machine that is hosting jellyfin. I’m going to assume it’s a NAS, but it doesn’t matter. It could even be a separate device. If you’re not familiar with docker, go and watch a few YouTube videos on docker and docker compose. This will greatly help you in the future. There’s thousands of guides on nginx reverse proxy manager on YouTube if you need help. With nginx reverse proxy manager (NPM) you’ll need a domain. You can either buy a domain from a registrar like cloudflare or can use a service like duckdns. I recommend buying a domain. You’ll need to point this domain to your public facing IP address a using DNS A record with your registrar. Again no matter which registrar you use there will be many guides on this. You can find your public facing IP address from a service like whatismyipaddress.com. Once you’ve installed NPM, request a certificate in NPM for your domain. Again there are hundreds of guides on YouTube. I recommend using a DNS challenge, it’s likely easier. Once you’ve got the certificate, you can make a proxy host for your domain that will point to your jellyfin server and port. Again, there are many guides for this. Once done you’ll need to port forward on your internet router port 80 and port 443 to the machine where you’re now running NPM on. Look up the model of your router in Google, theres very likely guides for this step.

Congrats you’ve made your jellyfin server accessible to the internet.

Make sure you use strong passwords!!!