Thanks @RaTTuS for your answer.RaTTuS wrote:setup a ssh tunnel from each RPi to your location
you will need a fixed IP from your isp - or use a dyndns type solution
I know the paid versions don't have limits, but as I mentioned, using 3rd party websites limit us in designing our system/interface of remote monitoring. That's why I'm more interested in VPN.fruitoftheloom wrote:RealVNC Connect: https://www.realvnc.com/raspberrypi/
Though you would have to pay a license fee
Thanks @ghans for your answer.ghans wrote:Does your hoster offer updating subdomains via Dynamic DNS clients ? Mine does.
For some reason this feature is rarely advertised.