Comment by gitowiec
3 years ago
I don't think dynamic DNS will work on a phone connected to LTE service. LTE providers keep phones behind the NAT (or something with similar results). There is no way to forward/open a port for incoming connections. I wish there was a way to bring up a tunnel to make incoming connections possible via LTE/GSM OTA way.
Wouldn't it be possible with ssh -R ?
The device connect remotely to a server that you control and give access back to you.
https://man.openbsd.org/ssh#R
Or setup wireguard and forward PUBLICIP:PORT to PHONE_WG_IP:PORT
T-Mobile has open ports on IPv6 (at least as of a few months ago). I was curious, and tried hosting a web site from my phone, and it worked flawlessly (assuming you are willing to abandon IPv4).
Well, if you don't mind really slow bandwidth, you can set up a Tor onion service