I have some subdomains that go to my home address (I know I should put it through a VPS first but I’ll get to that when I have time).

If I connect to example.domain.tld and DNS records point back to my own IP, where does that data go to reach back to my device?

Edit: thanks for the responses everyone

  • yaroto98@lemmy.worldEnglish
    0·
    4 months ago

    Depends, you can set it up a few different ways.

    1. you can set the dns so each subdomain resolves to a different port with your ip, in which case your router can forward that port to any local address on your network with port forwarding rules.

    2. reverse proxy, this is most common. You use a service to do the translating for you. Your router forwards all requests on port 80 and 443 to your reverse proxy. The reverse proxy takes requests for subdomain1 and forwards it to the associated ip/port locally.

    • 4am@lemmy.zipEnglish
      1·
      4 months ago

      Can you set a port on DNS services that don’t typically use an SRV record (like Minecraft does, for example)?

      I think I tired to figure this out once but couldn’t get it to work with web browsers. Ended up just looking at the HTTP request to find the subdomain and then routed from a reverse proxy as appropriate…

    • jws_shadotak@sh.itjust.worksOPEnglish
      1·
      4 months ago

      I have a reverse proxy set up already. The path from the outside goes:

      DNS -> my IP -> reverse proxy -> server

      I’m just wondering what happens when my own devices on the same network go to the domain.

      • floquant@lemmy.dbzer0.comEnglish
        2·
        4 months ago

        You already have a bunch of NAT-level suggestions, so I wanted to mention there’s an alternative solution: split-horizon DNS, or simply split DNS. Basically, you run a DNS server in your LAN (like pi-hole) which resolves to the private IP, so resolving externally and internally give different results. This way packets don’t hit the router at all. You can also do a wildcard like *.something.lan to avoid having to add a record for every service, and only configure your reverse proxy.