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Ubuntu server to run Remmina only

Hi, My Linux knowledge is not great and I am configuring computers that should be used to connect to a remote server via Remmina only. The goal is to enable the users to connect to the remote server and to restrict their interaction with the local OS. I installed Ubuntu server and did the following configurations : ``` LVM partition, encrypted sudo apt-get install remmina sudo adduser *username* Autologin of *username* sudo nano /etc/systemd/logind.conf NAutoVTs=6 ReserveVT=7 sudo mkdir /etc/systemd/system/getty@tty1.service.d/ sudo nano /etc/systemd/system/getty@tty1.service.d/override.conf [Service] ExecStart= ExecStart=-/sbin/agetty --noissue --autologin *username* %I $TERM Type=idle Install xinit sudo apt install xinit sudo nano /etc/X11/xinit/xinitrc setxkbmap -layout en exec remmina Comment ". /etc/X11/Xsession" Auto startx nano .profile Add #StartX Autostart if [[ -z "$DISPLAY" ]] && [[ $(tty) = /dev/tty1 ]]; then . startx logout fi Hide cmdlines sudo nano /etc/default/grub Edit line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" sudo update-grub sudo nano /etc/default/grub.d/50-curtin-settings.cfg Add line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" sudo update-grub ``` It is working almost as it needs to but as I’m not experienced I’m wondering if my configuration is a good way of achieving my goal. Could I improve something ? Ideally I want to restrict the users ability to change the configurations of Remmina but I didn’t find a good solution yet. It is a bit slow to boot. Maybe some useless services are being started and I could disable them ? How could I know what services are not needed by Remmina and could be disabled ? Or would it be easier for me to use a minimal distribution like Arch ? Could I still apply my configuration steps or am I going to need to change everything ? Thanks in advance for any insight.