File:Firejailed firefox download.png

Summary
Screenshot showing Firefox 52.4.0 (with two windows open) running inside an X11 sandbox (Xephyr + firejail, with Openbox window manager). A download of a zip file, initiated from the second Firefox window, has just completed. An Xterm and Nautilus window are also open in the sandbox, the latter showing the user's ~/Download directory. Outside the sandbox, another Nautilus window is open, also showing ~/Download (to illustrate that this location is whitelisted). The main ("parent") desktop is running GNOME 3.22.2. Uploaded for use in a forthcoming mini-guide on X11 sandboxing (an addendum to Sakaki's EFI Install Guide).