this post was submitted on 12 Aug 2025
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Round Two: Can I manage to set up Jellyfin correctly this time? (lemmy.blahaj.zone)
submitted 11 months ago* (last edited 11 months ago) by compostgoblin@lemmy.blahaj.zone to c/selfhosted@lemmy.world
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Hi y’all, thanks for the help with my question yesterday. I did a bit of homework, and I think I’ve got things figured out. Here’s my revised plan:

  1. configure a cron job to update DuckDNS with my IP address every 5 minutes

  2. use ufw to block all incoming traffic, except to ports 80 and 443, to allow incoming traffic to reach Caddy

  3. configure the Caddyfile to direct traffic from my DuckDNS subdomain to Jellyfin’s port

Does this seem right this time? Am I missing anything, or unnecessarily adding steps? Thanks in advance, I’ll get the hang of all this someday!

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[–] TarantulaFudge@startrek.website 7 points 11 months ago* (last edited 11 months ago) (2 children)

It's perfectly fine to host jellyfin online. Use a proxy server to enable TLS and do not use default ports 80/443. Use letsencrypt for free certificates. No need for VPN to access here either. Do not expose any other ports such as SSH on default ports. Lock down your jellyfin server and any other related services behind a VPN service and block access to Internet through other interfaces (except for port forwards on your ISP for jelly). Go high on port ranges since they typically aren't scanned or blocked. Go dual stack for best results and don't use your router address for IPv6 more than likely you have your own /64 choose a different address for port forwards. Do not assign this address to your internal servers. Use a reserved unrouted IPv6 range internally and do NAT6. Do not allow any raw IPv6 internet access

[–] dogs0n@sh.itjust.works 6 points 11 months ago* (last edited 11 months ago)

do not use default ports 80/443.

In my opinion, you'd be fine using default ports. Guess there's no harm in using other ports though, other than the pain of having the remember which port to use if you ever forget when adding a new device, etc.

Edit: I should add that im speaking of only ports 80/443 here. If you must expose ssh over the internet (probably shouldnt) for example, then yes, use a non-standard port (I use non standard ports for pretty much all apps except http/s).

[–] possiblylinux127@lemmy.zip 2 points 11 months ago

Do not expose Jellyfin. It has unauthenticated endpoints that will be exploited by bots