I’m connected via a 4G modem. Got this setup about 3 years ago. In the beginning it was enough to look for the public IP (what’s my IP). The modem showed some sort of private ip in the ui. I’m running stuff at home (Homeassistant, Gitea,) and bought a domain and pointed it to my home IP via Cloudflare. After some time I’ve noticed my modem shows the public IP also internally. For about 2 years now it ran flawlessly, the IP changed from time to time, but not really more than once in several weeks. For about a week all stopped working and the modem shows IP 100.xxxx and outside 85.something I guess I’m behind NAT now. Normal port forwarding on the modem is useless now. Is it possible to open the ports via UPNP? I’ve tried via miniupnp from my Ubuntu server, but it just throws an error.

upnpc -a ifconfig enp1s0| grep "inet addr" | cut -d : -f 2 | cut -d " " -f 1 22 22 TCP

Can I use this to somehow open the ports via UPNP on my modem and bypass the blocking? I can’t even OpenVPN to my modem anymore.

EDIT: i also run AdguardHome, that I use as Private DNS on my Android phone

UPDATE: everything except Adguard Home used as Private DND on my Android works! I’ve used this: https://github.com/mochman/Bypass_CGNAT/wiki/Oracle-Cloud-(Automatic-Installer-Script) - free Oracle VPS + automated well described script. Even HTTPS works fine!

  • DoomBot5@lemmy.world
    link
    fedilink
    English
    arrow-up
    1
    arrow-down
    1
    ·
    1 year ago

    No, it just doesn’t fit in your imagination, but it is a 2 way connection by definition. It’s also everything the ISP promises when they give you an internet connection.

    • poVoq@slrpnk.net
      link
      fedilink
      English
      arrow-up
      2
      arrow-down
      1
      ·
      1 year ago

      Sorry, but you are using a wrong definition of an internet connection. A internet connection has by definition a unique public IP, otherwise it is only a intranet connection. That has nothing to do with my imagination and I can assure you that I would never pay for a CGNAT connection as most of what I do with my internet connection is not possible with that crap.

      • DoomBot5@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        arrow-down
        1
        ·
        1 year ago

        Your definition does not make it the definition. Nobody really cares about your definitions or what you would do with it. People care about the accepted definitions and what is the expectation.

        • poVoq@slrpnk.net
          link
          fedilink
          English
          arrow-up
          1
          arrow-down
          1
          ·
          1 year ago

          That’s like saying internet is not internet. And I very much expect my internet connection to have a public IP.

          • DoomBot5@lemmy.world
            link
            fedilink
            English
            arrow-up
            1
            arrow-down
            1
            ·
            1 year ago

            No, I’m just saying you’re wrong at this point. You just keep proving that to be true with every reply.

              • DoomBot5@lemmy.world
                link
                fedilink
                English
                arrow-up
                1
                arrow-down
                1
                ·
                1 year ago

                Except you keep claiming it’s fire. It’s not fire, so stop calling it such.

                • poVoq@slrpnk.net
                  link
                  fedilink
                  English
                  arrow-up
                  1
                  arrow-down
                  1
                  ·
                  1 year ago

                  You are extremly confused, sorry to say. Please look up the difference between “Internet” and “Intranet”.

                  • DoomBot5@lemmy.world
                    link
                    fedilink
                    English
                    arrow-up
                    1
                    arrow-down
                    1
                    ·
                    1 year ago

                    No, I don’t think I am. You’re just wrong and don’t want to admit it. Some self reflection will do you good.