The only thing I found that works on cellular modems or routers is Tailscale. My brother is using it at his cabin with a 4G modem.As a newbie to CCTV and networking, I've read pages and pages and then discover to my surprise (page 65 of this thread) that a VPN won't work on my 4G wireless modem. Is this correct? Maybe in my ignorance I misread something or misunderstood something.
I'm considering installing a Dahua CCTV / NVR system here at home that I can access remotely and the only home internet access I have is via a wireless modem. No wires around in this rural area!