this post was submitted on 04 Aug 2025
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Self-hosted blog - do I need a static IP address? (lemmy.ml)
submitted 3 weeks ago by Paddy66@lemmy.ml to c/selfhosted@lemmy.world
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hi everyone,

I was just about to self-host a Ghost blog but then was warned that my ISP might change my external IP address at any time, so I would need to pay for a static IP address.

Is that true?

(I'd not seen much about that in stuff I've looked up so far about self hosting)

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[–] iii@mander.xyz 1 points 3 weeks ago (1 children)

Quick, but sadly incorrect

[–] Prunebutt@slrpnk.net 2 points 3 weeks ago (1 children)

Care to explain what I got wrong?

[–] iii@mander.xyz 1 points 3 weeks ago (1 children)

Static IP is helpfull but not necessary. Even with NAT and a changeing IP there's options, such as:

  1. dynamic dns.
  2. Public reverse proxy or tunnel.
  3. Onion routing.
[–] Prunebutt@slrpnk.net 1 points 3 weeks ago (1 children)
  1. How do you open the https port behind a nas?
  2. That public tunnel needs at least a public IP address again.
  3. Ok, forgot that one. But then you're only accessible through Tor, isn't it?
[–] iii@mander.xyz 1 points 3 weeks ago (1 children)
  1. Port forwarding
  2. Yes, and there's services that do that for you
[–] Prunebutt@slrpnk.net 1 points 3 weeks ago (1 children)

You can't port-forward if you sit behind a nat.

[–] iii@mander.xyz 1 points 3 weeks ago (1 children)

Port forwarding was invented for exactly that

[–] Prunebutt@slrpnk.net 1 points 3 weeks ago (3 children)

Hou will you configure the ISP's NAT router to port-forward? You won't be able to reach the forwarded port if your ISP doesn't foward the port as well.

[–] Hawk@lemmynsfw.com 2 points 3 weeks ago

You can't, this guy doesn't know what he's taking about.

Port forward behind CGNAT won't get you out. Best bet here would be ipv6.

Tor would work. However, only over Tor obviously.

[–] iii@mander.xyz 1 points 3 weeks ago

Aah, ISP's NAT. Yes, in that context, it's correct that you can't port forward.

Perhaps you can STUN through, but unlikely to get a good port.

[–] Saik0Shinigami@lemmy.saik0.com 1 points 3 weeks ago (1 children)

ISP’s NAT

That has it's own name... CG-NAT. Thus why people are responding to you as if you're wrong. As you wrote it you are wrong though. But there's still answers like argo tunnels (if you are okay with cloudflare) and other similar solutions.

Or you can setup a vps and tunnel through that.

[–] Prunebutt@slrpnk.net 1 points 3 weeks ago (1 children)

Oh, I see. Sorry I was too dumb to research that term for the comment.

Or you can setup a vps and tunnel through that.

But then the VPS needs a static address.

[–] Saik0Shinigami@lemmy.saik0.com 1 points 3 weeks ago

But getting a static address for your VPS is likely much easier than getting it from certain ISPs.

For instance, Quantum Fiber doesn't support static IPs at all... But most VPSes can and do.