So my goal is rather simple. I also want to access the cameras that are in my local Wi-Fi from the outside. So in other words from a 5G network or another Wi-Fi somewhere in the world. The problem is that whenever I try this, all cameras that are in the Wi-Fi are shown offline. So I tried tailscale. I tried even Avahi-daemon. But it still shows as offline and I'm just wondering how I can see them and get notifications once I'm via VPN in the local area network at home.

So I'm using tailscale and it works with everything else, but something is within those cameras that just keeps them show up as offline. So the only way they worked so far was if I actually was in the same Wi-Fi. And obviously that makes outside surveillance complicated. So I wonder what do I need to know to make this work with tailscale or other options?