[SOLVED] Turns out I’m just a bigger moron than I thought. The MAC address of my server had accidentally been flagged in my router for black listing.

As the title says, my proxmox host is apparently not able to reach the internet anymore, not sure for how long this has been an issue, I rarely work on the host itself. It can ping other devices on my network just fine, and other devices can ping it. I can also SSH in to it and access the web interface. My VMs are connected to the internet without any issues. I don’t need to access the host remotely/outside my home network, this is just for updating it etc.

I can’t see the host under active devices in my router though.

I have been trying to figure why, but so far without any luck.

  • PlexSheep@feddit.de
    link
    fedilink
    English
    arrow-up
    2
    ·
    7 months ago

    Can you dig @9.9.9.9? If so, its certainly DNS. If it’s not DNS, perhaps try to check your iptables iptables -L && iptables -t nat -L.

    • DreadPotato@sopuli.xyzOP
      link
      fedilink
      English
      arrow-up
      1
      arrow-down
      1
      ·
      7 months ago

      I’m not really sure what to look for, I’m not very experienced in network, but this is the output i get

      • PlexSheep@feddit.de
        link
        fedilink
        English
        arrow-up
        3
        ·
        7 months ago

        From the output, you don’t have any routing rules for your machine that block outgoing traffic. The dig command confirms that you can talk to servers. 9.9.9.9 is a common DNS Server. Based off of this, it seems like your problem is that your system has a bad DNS configuration (it’s always DNS).

        Can you parhaps cat /etc/resolv.con? This file normally contains the used DNS servers for Linux systems, unless using special software.

          • PlexSheep@feddit.de
            link
            fedilink
            English
            arrow-up
            1
            ·
            7 months ago

            Okay, no external software for DNS management present here. Is that ip a working DNS Server? Is it your server itself perhaps?

            • DreadPotato@sopuli.xyzOP
              link
              fedilink
              English
              arrow-up
              2
              arrow-down
              1
              ·
              edit-2
              7 months ago

              192.168.68.210 is my adguard, it’s on a different machine. It should be working, all my other devices use it and I can see the traffic going through it. My servers IP is 192.168.68.120, and I can’t see traffic from that on my adguard at all. But it can ping my adguard.

              • PlexSheep@feddit.de
                link
                fedilink
                English
                arrow-up
                1
                ·
                7 months ago

                Okay, so if that’s your actual DNS Server, can you confirm that it works? dig @yourdns debian.org, for example. Afterwards try to use the default DNS of your system dig debian.org. If both works, your DNS config should be fine. Try a curl debian.org -v too.

                debian.org is just a random domain for this, use whatever you want. I don’t see anything badly configured so far.