Struggling with Remote Access

Hola.

Long term Ubuntu Maté user here, but I'm struggling with remote connections.

All I want to do is to connect from one Ubuntu machine to another.

I used to do this from Ubuntu machines to Windows Server using Remmina and it worked fine. But I've never figured out how to do it from Ubuntu to Ubuntu.

As I understand it, Ubuntu uses VNC, which has server and client components. I presume I just need to enable incoming connections or some such on each machine, but I can't find where to do that. I've googled around but can't find Desktop Sharing, Session Sharing or any such application. If I type vino-preferences, I get "command not found". So, where's the setting?

Oh, and I'm running Ubuntu Maté Desktop with a fresh install of 20.04 and the machines I need to connect to are also running Ubuntu Maté 20.04.

Thanks in advance,

Hal

===System A ===
sudo apt install vino

add /usr/lib/vino/vino-server to Startup Apps

gsettings set org.gnome.Vino prompt-enabled false
gsettings set org.gnome.Vino require-encryption false

reboot, verify vino-server is running (ps -ef | grep vino)

System B
download and install vncviewer
https://www.realvnc.com/download/file/viewer.files/VNC-Viewer-6.20.529-Linux-x64.deb

run vncviewer, connect to System A

Vino settings can be found under /org/gnome/desktop/remote-access/ using dconf-editor

Thank you kindly. It's a little more complex than I thought it might be but not by much. And it worked a treat. I'm now up and running on all machines.