So I was able to install everything correctly, but I don’t know what I’m supposed to do in order for people that don’t have my same IP to see my files. I’d like to share my Jellyfin server with some friends so they can see movies there. I’ve already open the ports, but they can’t still access them, I’m using elementaryOS Hera which is built on Ubuntu 18.04.4 LTS.
Your IP might not be a public IP. It could be behind a CGNAT, which is why others are unable to access it. I know 2 ways to fix it.
I would however recommended you to read up on how to securely share services to the internet, since when a service is publicly available, it can open up a lot of entryways into your server, if you are not carefull.
If possible I would suggest you use a VPN. Your friends would be able to connect to the VPN to get access to the jellyfin server. An easy VPN you can use is tailscale
Yeah, I’m behind a DoubleNAT and I think my ISP won’t let me otherwise so I guess I’m fucked.
You can still use a VPN(Eg. tailscale as recommeded above) to share, since it can bypass the DoubleNAT. You can also setup a proxy(What I’m doing currently), but it requires more setup and also cost a bit(1 - 2 Euros a month).