Is it possible to have a SSL connection that’s over the UART? What I mean is, instead of…
a) Me writing a network stack that implements TCP/UART to connect via the RPi
b) Being forced to use a networking module just to get SSL
Is it possible to just open a stream and have it SSLed?

In my configuration I have a G120 connected via UART to a RPi, but I would still like to use the remote firmware update feature.

(Note. As you can see I have limited knowledge of SSL)

With PPP, you have networking with SSL, over serial.

Ok, now I’m up to speed on PPP. Off to the next question.