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.
Project webpage: https://firejail.wordpress.com/
Download and Installation: https://firejail.wordpress.com/download-2/
Travis-CI status: https://travis-ci.org/netblue30/firejail
Compile and install
$ git clone https://github.com/netblue30/firejail.git $ cd firejail $ ./configure && make && sudo make install-strip
On Debian/Ubuntu you will need to install git and a compiler:
$ sudo apt-get install git build-essential
Running the sandbox
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
Run "firejail --list" in a terminal to list all active sandboxes. Example:
$ firejail --list 1617:netblue:/usr/bin/firejail /usr/bin/firefox-esr 7719:netblue:/usr/bin/firejail /usr/bin/transmission-qt 7779:netblue:/usr/bin/firejail /usr/bin/galculator 7874:netblue:/usr/bin/firejail /usr/bin/vlc --started-from-file file:///home/netblue/firejail-whitelist.mp4 7916:netblue:firejail --list
Integrate your sandbox into your desktop by running the following two commands:
$ firecfg --fix-sound $ sudo firecfg
The first command solves some shared memory/PID namespace bugs in PulseAudio software prior to version 9. The second command integrates Firejail into your desktop. You would need to logout and login back to apply PulseAudio changes.
Start your programs the way you are used to: desktop manager menus, file manager, desktop launchers. The integration applies to any program supported by default by Firejail. There are about 250 default applications in current Firejail version, and the number goes up with every new release. We keep the application list in /usr/lib/firejail/firecfg.config file.
Most Firejail command line options can be passed to the sandbox using profile files. You can find the profiles for all supported applications in /etc/firejail directory.
If you keep additional Firejail security profiles in a public repository, please give us a link:
Use this issue to request new profiles: #1139
We also keep a list of profile fixes for previous released versions in etc-fixes directory .
Current development version: 0.9.55
(wireless support for --net) --net=ethernet_interface|wireless_interface Enable a new network namespace and connect it to this ethernet interface using the standard Linux macvlan|ipvaln driver. Unless specified with option --ip and --defaultgw, an IP address and a default gateway will be assigned automatically to the sandbox. The IP address is verified using ARP before assignment. The address configured as default gateway is the default gateway of the host. Up to four --net options can be specified. Support for ipvlan driver was introduced in Linux kernel 3.19. Example: $ firejail --net=eth0 --ip=192.168.1.80 --dns=18.104.22.168 firefox $ firejail --net=wlan0 firefox (tunneling support) --net=tap_interface Enable a new network namespace and connect it to this ethernet tap interface using the standard Linux macvlan driver. If the tap interface is not configured, the sandbox will not try to configure the interface inside the sandbox. Please use --ip, --netmask and --defaultgw to specify the configuration. Example: $ firejail --net=tap0 --ip=10.10.20.80 --netmask=255.255.255.0 --defaultgw=10.10.20.1 firefox --netmask=address Use this option when you want to assign an IP address in a new namespace and the parent interface specified by --net is not configured. An IP address and a default gateway address also have to be added. By default the new namespace interface comes without IP address and default gateway configured. Exam‐ ple: $ sudo /sbin/brctl addbr br0 $ sudo /sbin/ifconfig br0 up $ firejail --ip=10.10.20.67 --netmask=255.255.255.0 --defaultgw=10.10.20.1 --keep-dev-shm /dev/shm directory is untouched (even with --private-dev) Example: $ firejail --keep-dev-shm --private-dev --nou2f Disable U2F devices. Example: $ firejail --nou2f --private-cache Mount an empty temporary filesystem on top of the .cache directory in user home. All modifications are discarded when the sandbox is closed. Example: $ firejail --private-cache
Microsoft Office Online, riot-desktop, gnome-mpv, snox, gradio, standardnotes-desktop, shellcheck, patch, flameshot, rview, rvim, vimcat, vimdiff, vimpager, vimtutor, xxd, Beaker, electrum