this post was submitted on 30 Nov 2023
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13
Setup a DNS server on a dynamic public ip (lemmy.world)
submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]
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Hello! I want to set up a pi-hole on my home and connect from my parent's. Both setups have a dynamic IP assigned by my isp and are different networks.

I have a couple of questions:

  1. I can get a domain that updates automatically. But how would I resolve it on the client side?
  2. Is there any way to authenticate on the server? By Mac maybe? That can be spoofed right?

Edit: my bad, thanks for correcting me, Mac is another layer completely

  1. Can setting up a VPN solve both (1) and (2)?
  2. Is there any other way?

Thanks!

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[–] [email protected] 0 points 11 months ago* (last edited 11 months ago)

A lot of people are suggesting VPNs

But there's some beauty in DoH/DoT/Quic ports opened

You should check adguard-home for the dns stuff For your questions:

  1. I don't quite get what you mean. But if you say "my domain's dns updates regularly, how would one of the clients of the dns get the new IP", then I would say upstream dns, and maybe pi-hole/adguard have something up their sleeve

  2. In adguard you can have client ids, it can be different things I forgot, but mainly it can be the domain you're using as dns, so john.dns.mysite.com, and you can give 0.0.0.0 response to every client that is not a client. Maybe there are more clever ways to do this

  3. Yes, but for 1 is not so straightforward, you have many options, you either need to update your dns in some way anyway to connect to VPN, or rent a cloud to host(or port forward) the entry point there (or the theoretical option, some selfhosted vpns allow you to do everything without any ports opened)

  4. Adguard-home, using a public dns, route through tor, cloudflare's tunnels, host on a cloud, forward ports to a cloud, and many more

And for dynamic IP, I personally use cloudflare(although I don't trust them) (he-he, I didn't expect previous point to be so long, I wrote this at the beginning)

Ah, and for the VPN I personally use headscale