Xserver-xorg securing

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Secure Xserver-xorg disable Switch to Console

add to /etc/X11/xorg.conf

Section "ServerFlags"
        Option      "DontZap" "on"
        Option      "DontVTSwitch" "on"
        Option      "AllowClosedownGrabs" "off"
        Option      "AllowDeactivateGrabs" "on"
EndSection


- 1.+2. entry disables switch to terminal by pressing ALT+CTRL+F1

- 3.+4. entry disables xkill access to active process of xscreensaver -xlock by keyboard shortcut CTRL+ALT+Multiplication Button