My system works with: $ sudo ufw status numbered This is a test set up on an AMD 64bit desktop so I dont know for sure it will all work on a Mini or that everything works 100% but perhaps it maybe of some help.If that solves the problem, you can do: sudo ufw enable Without doubt,IMHO, its a mess compared to Windows or RPI Mate/Stretch using Realvnc server - as for the googled junk on VNC its a case of seeing the wood for the tree's NOTE Update there is still some manual work to set up permanent passwords (the GUI passwords only stay for a session) and I am yet to test headless) Used this write up to install KDE Desktop /how-to-install-kde-plasm.-bionic-beaver-linuxĪnyway it works, no (well nearly) editing files a simple way to get remote desktop working - see attached screen prints The latter,Gnome desktop !) does not seem to do anything but X11VNC Server provides a nice simple GUI to configure the service to how you want it to work(See note at the end regarding headless). I switched desktop from std Gnome Ubuntu 18.04 to KDE Plasma(can choose which to login too !) and found 'Discover' which allowed a simple install and set up of X11VNC Server and Desktop Sharing programs. Vino-preferences also seems to have gone or hidden. I ask because although Vino is supposed to work out of the box - it doesn't even appear (or work) unless you use the default Gnome desktop which Kstars doesn't like (graphics are u/s ). You say Ubuntu 18.04 is that a true Ubuntu 18.04 or Mate base? It may sound a stupid question but what Desktop are you using - Gnome,KDE etc? Then go to org -> gnome -> desktop -> remote access and deselect 'require encryption'. Start it from Applications -> system Tools -> dconf editor. In order to configure vino you'll need dconf-editor. vino *needs* to run unencrypted otherwise RealVNC cannot connect. However, I have setup a fixed ip address on eth0 (since I always use wifi at home) and connect to it from my MacBook, which I also have given a fixed ip address (since I always use wifi otherwise) no but you do need to know the ip address in order to make a connection. I only have Mac machines (iPhone, iPad and MacBook) and I use RealVNC

I make sure that my user automatically logs in into Ubuntu and added vino as a start up application (System -> Preferences -> Personal -> Startup Applications). I am not saying that my solution is the best, but I use vino and that works very well for me.

For iphone instal Hotspot Maker 2.9