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# 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 && sleep inf"
`````
Project webpage: https://l3net.wordpress.com/projects/firejail/
Download and Installation: https://l3net.wordpress.com/projects/firejail/firejail-download-and-install/
Features: https://l3net.wordpress.com/projects/firejail/firejail-features/
Usage: https://l3net.wordpress.com/projects/firejail/firejail-usage/
FAQ: https://l3net.wordpress.com/projects/firejail/firejail-faq/
## Development version 0.9.35
### Firefox whitelists:
The current whitelist of files and directories for Firefox is as follows:
`````
whitelist ~/.mozilla (0.9.34)
whitelist ~/Downloads (0.9.34)
whitelist ~/Загрузки (new in 0.9.35)
whitelist ~/dwhelper (0.9.34)
whitelist ~/.cache/mozilla/firefox (new in 0.9.35)
whitelist ~/.zotero (0.9.34)
whitelist ~/.lastpass (0.9.34)
whitelist ~/.vimperatorrc (0.9.34)
whitelist ~/.vimperator (0.9.34)
whitelist ~/.pentadactylrc (0.9.34)
whitelist ~/.pentadactyl (0.9.34)
whitelist ~/.config/gnome-mplayer (new in 0.9.35)
whitelist ~/.cache/gnome-mplayer/plugin (new in 0.9.35)
include /etc/firejail/whitelist-common.inc
`````
/etc/firejail/whitelist-common.inc
`````
whitelist ~/.config/mimeapps.list (new in 0.9.35)
whitelist ~/.icons (new in 0.9.35)
# fonts
whitelist ~/.fonts (0.9.34)
whitelist ~/.fonts.d (0.9.34)
whitelist ~/.fontconfig (0.9.34)
whitelist ~/.fonts.conf (0.9.34)
whitelist ~/.fonts.conf.d (0.9.34)
# gtk
whitelist ~/.gtkrc (new in 0.9.35)
whitelist ~/.gtkrc-2.0 (0.9.34)
whitelist ~/.config/gtk-3.0 (new in 0.9.35)
whitelist ~/.themes (new in 0.9.35)
`````
If you are using a plugin or extension that requires other directories, please open a new issue: https://github.com/netblue30/firejail/issues
### New security profiles:
New profiles introduced in this version: unbound, dnscrypt-proxy
### --noblacklist
`````
--noblacklist=dirname_or_filename
Disable blacklist for this directory or file.
Example:
$ firejail
$ nc dict.org 2628
bash: /bin/nc: Permission denied
$ exit
$ firejail --noblacklist=/bin/nc
$ nc dict.org 2628
220 pan.alephnull.com dictd 1.12.1/rf on Linux 3.14-1-amd64
`````
### --whitelist
Whitelist command accepts files in user home, /dev, /media, /var, and /tmp directories.
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