Homepage - Serve different page based on users IP.
reddit / selfhosted

----------------------------------------------------------------------
TroleMaster2013 · 2023-12-18 20:00

Hi,

I just set up a my unraid server homepage. Have it as a media server
with jellyfin, jellyseerr, radarr, sonarr etc.

I have a public domain that points to this machine via a caddy reverse
proxy. The issue is sometimes the public links don't work when I am in
the same network.

Right now my homepage is set to server all the public links to my
services, but is there any way to have it serve the local ip to the
services based on the user's ip? - Or if there is a better way to
resolve the public domain to my local ip so I can easily use one link
instead of change based on where I am hitting it from.

----------------------------------------------------------------------
MaxGhost · 2023-12-18 20:56

You can use the
https://caddyserver.com/docs/caddyfile/matchers#remote-ip matcher to
do routing.

But really, the correct thing to do is set up a DNS server in your LAN
which overrides the IP address for the domains to point to your local
IPs instead.

The reason it doesn't work is probably because your router doesn't
support NAT hairpinning, i.e. your router doesn't know how to route
requests to your WAN IP back into your network. Most consumer routers
don't support this. I don't understand why though, it's a simple
feature.

----------------------------------------------------------------------
murdaBot · 2023-12-19 11:25

You could easily do this with a traditional nginx web server or
reverse proxy too.

----------------------------------------------------------------------
MaxGhost · 2023-12-19 14:46

Sure, but they said they're using Caddy.

----------------------------------------------------------------------
ZAFJB · 2023-12-19 15:49

DNS, it's always DNS

Configure an A record with the local IP of the webserver in your local
DNS server.

If you don't have a local DNS server, configure an entry in your hosts
file.

----------------------------------------------------------------------
TroleMaster2013 · 2023-12-19 19:58

Yeah I set this up, but since I have basic authentication on my public
site, in theory would setting up my DNS to match to my local IP make
it so I by bypass what my reverse proxy has set for the public domain?

For example

Local Address: 192.168.0.25:8096 (DNS record for stream.home.)

Public Domain: https://stream.mydomain.com

Reverse Proxy: set to point https://stream.mydomain.com to
192.168.0.25:8096 with basic_auth set.

DNS Record for stream.mydomain.com to 192.168.0.25.

I guess I have to look at Caddy, cause regardless of what the DNS
does, anything that comes to the caddy config will hit the right port,
but would go through the authentication as well.