The router cannot find itself from the inside.
reddit / selfhosted

----------------------------------------------------------------------
9acca9 · 2023-11-04 02:47

I'm asking here because I think it's a problem that others have
already faced.

I have a server on my own network.

If I want to reach those services internally by using my public IP as
the URL, I can't from the inside.

The router cannot find its own public IP....

If I try from outside my network, I can connect.

But I would need to be able to connect to my own public IP from
within, or at least that wouldn't be a problem.

Has anyone faced this issue at some point and could point me in the
right direction?

----------------------------------------------------------------------
siranysparechange · 2023-11-04 03:38

The feature you're looking for is called NAT loopback or NAT
hairpinning. The preferred method is to instead use split DNS

----------------------------------------------------------------------
9acca9 · 2023-11-04 03:39

Just in case that what i write is not understandable.

If my domain is [mydomain.com](https://mydomain.com) pointing to my
local server.

i cant reach [mydomain.com](https://mydomain.com) from my local
network (where is the server), i can from outside, but not from
inside.

----------------------------------------------------------------------
autogyrophilia · 2023-11-04 14:05

Also called nat reflection or NAT proxy.

Yeah it's sort of an oversight on the technique and each vendor came
with their own name for it.

----------------------------------------------------------------------
9acca9 · 2023-11-04 15:36

> NAT loopback

Yep, is this. I dont have that option in my router.

I will see what is Split DNS, thanks.