Linux namespaces and seccomp-bpf sandbox
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README.md

Firejail

Firejail is a SUID sandbox program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces, seccomp-bpf and Linux capabilities. It allows a process and all its descendants to have their own private view of the globally shared kernel resources, such as the network stack, process table, mount table. Firejail can work in a SELinux or AppArmor environment, and it is integrated with Linux Control Groups.

Written in C with virtually no dependencies, the software runs on any Linux computer with a 3.x kernel version or newer. It can sandbox any type of processes: servers, graphical applications, and even user login sessions. The software includes sandbox profiles for a number of more common Linux programs, such as Mozilla Firefox, Chromium, VLC, Transmission etc.

The sandbox is lightweight, the overhead is low. There are no complicated configuration files to edit, no socket connections open, no daemons running in the background. All security features are implemented directly in Linux kernel and available on any Linux computer. To start the sandbox, prefix your command with “firejail”:

$ firejail firefox            # starting Mozilla Firefox
$ firejail transmission-gtk   # starting Transmission BitTorrent
$ firejail vlc                # starting VideoLAN Client
$ sudo firejail /etc/init.d/nginx start

Project webpage: https://firejail.wordpress.com/

Download and Installation: https://firejail.wordpress.com/download-2/

Features: https://firejail.wordpress.com/features-3/

Documentation: https://firejail.wordpress.com/documentation-2/

FAQ: https://firejail.wordpress.com/support/frequently-asked-questions/


User submitted profile repositories

If you keep your Firejail profiles in a public repository, please give us a link:

Use this issue to request new profiles: https://github.com/netblue30/firejail/issues/825


Current development version: 0.9.45


AppImage

Added AppImage type 2 support, and support for passing command line arguments to appimages.


New command line options

      --private-opt=file,directory
              Build  a  new /opt in a temporary filesystem, and copy the files
              and directories in the list.  If no listed file is  found,  /opt
              directory  will  be empty.  All modifications are discarded when
              the sandbox is closed.

              Example:
              $ firejail --private-opt=firefox /opt/firefox/firefox

       --private-srv=file,directory
              Build a new /srv in a temporary filesystem, and copy  the  files
              and  directories  in the list.  If no listed file is found, /srv
              directory will be empty.  All modifications are  discarded  when
              the sandbox is closed.

              Example:
              # firejail --private-srv=www /etc/init.d/apache2 start

      --machine-id
              Spoof id number in /etc/machine-id file - a  new  random  id  is
              generated inside the sandbox.

              Example:
              $ firejail --machine-id

       --allow-private-blacklist
              Allow  blacklisting  files in private home directory. By default
              these blacklists are disabled.

              Example:
              $   firejail    --allow-private-blacklist   --private=~/priv-dir
              --blacklist=~/.mozilla

      --hosts-file=file
              Use file as /etc/hosts.

              Example:
              $ firejail --hosts-file=~/myhosts firefox

New Profiles

xiphos, Tor Browser Bundle, display (imagemagik), Wire, mumble, zoom, Guayadeque, qemu, keypass2, amarok, ark, atool, bleachbit, brasero, dolphin, dragon, elinks, enchant, exiftool, file-roller, gedit, gjs, gnome-books, gnome-clocks, gnome-documents, gnome-maps, gnome-music, gnome-photos, gnome-weather, goobox, gpa, gpg, gpg-agent, highlight, img2txt, k3b, kate, lynx, mediainfo, nautilus, odt2txt, pdftotext, simple-scan, skanlite, ssh-agent, tracker, transmission-cli, transmission-show, w3m, xfburn, xpra, wget, xed, pluma, Cryptocat, Bless, Gnome 2048, Gnome Calculator, Gnome Contacts, JD-GUI, Lollypop, MultiMC5, PDFSam, Pithos, Xonotic, wireshark, keepassx2, QupZilla, FossaMail, Uzbl browser, xmms