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submitted 4 months ago by EvilCartyen@feddit.dk to c/selfhosted@lemmy.world

21 comments fedilink hide all child comments

So maybe I am missing something obvious, but here goes:

I've got a small server at home, and I have simply.com pointing various domains to it. Works fine, nginx routs the traffic where it needs to go.

But whenever I am at home and connected to wifi I have to use the internal address and port to reach my server, e.g. 192.168.0.192:8096 for my Jellyfin server. If I use the public URL at home, i hit the login page to my router.

This is annoying when I use apps, as I need to switch between the public URL and the internal address as I come and go from my home...

What are my options for doing something about this? I want to use the public URL at home too....

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[–] CameronDev@programming.dev 16 points 4 months ago* (last edited 4 months ago) (3 children)

I can't remember exactly what its called, but something like ~~router~~ NAT loopback is what you want. I'll have a look around. But if you set it right, things should work properly. It might be a router setting.

Found it: https://community.tp-link.com/en/home/stories/detail/1726

[–] EvilCartyen@feddit.dk 14 points 4 months ago* (last edited 4 months ago) (1 children)

Thanks - I have an icotera i4850 router which claims to support NAT loopback, but I can't figure out where to do it and it seems like the manual is gone from the internet :) Might have to ask my internet provider if they have a PDF somewhere.

Edit: D'oh, it's a checkbox in the port forwarding interface! Thanks a bunch, didn't know what to look for before your reply :)

[–] danielquinn@lemmy.ca 8 points 4 months ago

Thanks for posting this! I have the same router.

[–] Creat@discuss.tchncs.de 10 points 4 months ago

Another name, depending on the exact context, is "hairpin NAT". Should make googling with the specific router OP has easier.

[–] poVoq@slrpnk.net 4 points 4 months ago (1 children)

I think the term often used is "NAT reflection".

[–] CameronDev@programming.dev 3 points 4 months ago

Never heard that term, but its a very obscure concept, so wouldn't surprise me if it had multiple names. Probably vender specific names?

Seems quite a few people havent heard of it, hence a lot of the split DNS answers :/