@mumblebaj again this is possible IF the one of these systems is ON the internet… but typically this is pc on same house network as pi…
and 192.168 , 172 and 10. networks are not routable over the internet, so your device would have to have a ip address on the other side of the ISP router… or and open port (port forwarding)
if you need remote ssh use the stuff I started posting about here
https://forum.magicmirror.builders/post/114693
I will never have another port forwarded port