this post was submitted on 13 Jul 2023
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ELI5 Cloudflare Tunnel (kbin.social)
submitted 1 year ago by operator@kbin.social to c/selfhosted@lemmy.world
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So everyone is talking about cloudflare tunnels and I decided to give it a shot.

However, I find the learning curve quite hard and would really appreciate a short introduction into how they work and how do I set them up…

In my current infrastructure I am running a reverse proxy with SSL and Authentik, but nothing is exposed outside. I access my network via a VPN but would like to try out and consider CF. Might be easier for the family.

How does authentication work? Is it really a secure way to expose internal services?

Thanks!

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[–] operator@kbin.social 1 points 1 year ago (8 children)

Of course! So in order to get maximum speed on your services, you wanna use a direct internal route when you're inside your net. My understanding is, that when using an external cloud VPS with a proxy, local clients go through unnecessary routing..

Local request --out--> external VPS (proxy) --request data from internal--> receive data on external proxy --send back--> local client

So what I am saying, all requests are unnecessarily routed through the external VPS. So one would have to create an exact duplicate reverse proxy internally to avoid leaving the net. When accessing domain.com, the internal DNS returns the local proxy IP, when outside you receive the cloud VPS IP.

Or am I missing something?

Thank you for taking the time!

[–] ablackcatstail@lemmy.goblackcat.com 1 points 1 year ago (6 children)

I just decided to go ahead and implement split-brain DNS this evening and it works perfectly. What are you using for your internal DNS server? If it is Unbound, the one that I am using, I can share my config with you. After implementing this, the speed of my services when being accessed from my internal network sped up by an order of magnitude. I shoulda done this earlier. 😆

[–] operator@kbin.social 2 points 1 year ago (5 children)

That be amazing! I am currently not using anything (took down my homelab a while back) and planning on completely starting over fresh now.

I am most likely going with unbound! So if you could, that be great!

[–] ablackcatstail@lemmy.goblackcat.com 1 points 1 year ago

Unbound is simple to configure. I will send you mine when I get home from work. You could probably easily adapt it.

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