I use Teamviewer to monitor and manage my
bitcoin miners when I’m away from home for work.
I use it for my personal needs, license is free for that use.
If you manage your customers bitcoin rig remotely, you should pay a license.
I can also remote control my PC with a apple app or android.
It work very well. I don’t have to tweak my firewall or router
to get a remote access to my home network.
Here a youtube video to show you is very easy to install and setup.