Provided by: firejail_0.9.38.10-0ubuntu0.16.04.1_amd64 bug

NAME

       Firejail - Linux namespaces sandbox program

SYNOPSIS

       Start a sandbox:

              firejail [OPTIONS] [program and arguments]

       Network traffic shaping for an existing sandbox:

              firejail --bandwidth={<name>|<PID>} bandwidth-command

       Monitoring:

              firejail {--list | --netstats | --top | --tree}

       Miscellaneous:

              firejail {-? | --debug-caps | --debug-errnos | --debug-syscalls | --debug-protocols
              | --help | --version}

DESCRIPTION

       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.

       Firejail  allows  the  user  to manage application security using security profiles.  Each
       profile defines a set of permissions for a specific application or group of  applications.
       The  software  includes security profiles for a number of more common Linux programs, such
       as Mozilla Firefox, Chromium, VLC, Transmission etc.

USAGE

       Without any options, the sandbox consists of a chroot filesystem  build  in  a  new  mount
       namespace,  and  new PID and UTS namespaces. IPC, network and user namespaces can be added
       using the command line options.  The default Firejail filesystem  is  based  on  the  host
       filesystem with the main directories mounted read-only.  Only /home and /tmp are writable.

       As  it  starts  up,  Firejail  tries  to  find a security profile based on the name of the
       application.  If an appropriate profile is not found, Firejail will use a default profile.
       The  default  profile  is  quite  restrictive.  In  case the application doesn't work, use
       --noprofile option to disable it. For  more  information,  please  see  SECURITY  PROFILES
       section.

       If a program argument is not specified, Firejail starts /bin/bash shell.  Examples:

       $ firejail [OPTIONS]                # starting a /bin/bash shell

       $ firejail [OPTIONS] firefox        # starting Mozilla Firefox

       # sudo firejail [OPTIONS] /etc/init.d/nginx start

OPTIONS

       --     Signal the end of options and disables further option processing.

       --bandwidth=name
              Set  bandwidth  limits  for  the  sandbox  identified  by name, see TRAFFIC SHAPING
              section for more details.

       --bandwidth=pid
              Set bandwidth limits for the sandbox identified by PID, see TRAFFIC SHAPING section
              for more details.

       --bind=dirname1,dirname2
              Mount-bind  dirname1 on top of dirname2. This option is only available when running
              the sandbox as root.

              Example:
              # firejail --bind=/config/www,/var/www

       --bind=filename1,filename2
              Mount-bind filename1 on top of  filename2.  This  option  is  only  available  when
              running as root.

              Example:
              # firejail --bind=/config/etc/passwd,/etc/passwd

       --blacklist=dirname_or_filename
              Blacklist directory or file.

              Example:
              $ firejail --blacklist=/sbin --blacklist=/usr/sbin
              $ firejail --blacklist=~/.mozilla
              $ firejail "--blacklist=/home/username/My Virtual Machines"

       -c     Execute command and exit.

       --caps Linux capabilities is a kernel feature designed to split up the root privilege into
              a set of  distinct  privileges.   These  privileges  can  be  enabled  or  disabled
              independently,  thus  restricting  what  a  process  running  as root can do in the
              system.

              By default root programs run with all capabilities enabled. --caps option  disables
              the    following   capabilities:   CAP_SYS_MODULE,   CAP_SYS_RAWIO,   CAP_SYS_BOOT,
              CAP_SYS_NICE, CAP_SYS_TTY_CONFIG, CAP_SYSLOG, CAP_MKNOD, CAP_SYS_ADMIN.  The filter
              is applied to all processes started in the sandbox.

              Example:
              $ sudo firejail --caps "/etc/init.d/nginx start && sleep inf"

       --caps.drop=all
              Drop  all  capabilities  for  the  processes running in the sandbox. This option is
              recommended for running GUI programs or any other program that doesn't require root
              privileges.  It  is  a must-have option for sandboxing untrusted programs installed
              from unofficial sources - such as games, Java programs, etc.

              Example:
              $ firejail --caps.drop=all warzone2100

       --caps.drop=capability,capability,capability
              Define a custom blacklist Linux capabilities filter.

              Example:
              $ firejail --caps.keep=net_broadcast,net_admin,net_raw

       --caps.keep=capability,capability,capability
              Define a custom whitelist Linux capabilities filter.

              Example:
              $     sudo     firejail     --caps.keep=chown,net_bind_service,setgid,\      setuid
              /etc/init.d/nginx start

              A  short  note  about  mixing  --whitelist  and  --read-only  options.  Whitelisted
              directories should be made read-only independently. Making a parent directory read-
              only, will not make the whitelist read-only. Example:
              $ firejail --whitelist=~/work --read-only=~/ --read-only=~/work

       --caps.print=name
              Print the caps filter for the sandbox identified by name.

              Example:
              $ firejail --name=mygame --caps.drop=all warzone2100 &
              [...]
              $ firejail --caps.print=mygame

       --caps.print=pid
              Print the caps filter for a sandbox identified by PID.

              Example:
              $ firejail --list
              3272:netblue:firejail --private firefox
              $ firejail --caps.print=3272

       --cgroup=tasks-file
              Place  the  sandbox  in the specified control group. tasks-file is the full path of
              cgroup tasks file.

              Example:
              # firejail --cgroup=/sys/fs/cgroup/g1/tasks

       --chroot=dirname
              Chroot the sandbox into a root filesystem. If the sandbox is started as  a  regular
              user, default seccomp and capabilities filters are enabled.

              Example:
              $ firejail --chroot=/media/ubuntu warzone2100

       --cpu=cpu-number,cpu-number,cpu-number
              Set CPU affinity.

              Example:
              $ firejail --cpu=0,1 handbrake

       --csh  Use /bin/csh as default user shell.

              Example:
              $ firejail --csh

       --debug
              Print debug messages.

              Example:
              $ firejail --debug firefox

       --debug-blacklists
              Debug blacklisting.

              Example:
              $ firejail --debug-blacklists firefox

       --debug-caps
              Print all recognized capabilities in the current Firejail software build and exit.

              Example:
              $ firejail --debug-caps

       --debug-check-filename
              Debug filename checking.

              Example:
              $ firejail --debug-check-filename firefox

       --debug-errnos
              Print all recognized error numbers in the current Firejail software build and exit.

              Example:
              $ firejail --debug-errnos

       --debug-protocols
              Print all recognized protocols in the current Firejail software build and exit.

              Example:
              $ firejail --debug-protocols

       --debug-syscalls
              Print all recognized system calls in the current Firejail software build and exit.

              Example:
              $ firejail --debug-syscalls

       --debug-whitelsts
              Debug whitelisting.

              Example:
              $ firejail --debug-whitelists firefox

       --defaultgw=address
              Use this address as default gateway in the new network namespace.

              Example:
              $ firejail --net=eth0 --defaultgw=10.10.20.1 firefox

       --dns=address
              Set a DNS server for the sandbox. Up to three DNS servers can be defined.  Use this
              option if you don't trust the DNS setup on your network.

              Example:
              $ firejail --dns=8.8.8.8 --dns=8.8.4.4 firefox

       --dns.print=name
              Print DNS configuration for a sandbox identified by name.

              Example:
              $ firejail --name=mygame --caps.drop=all warzone2100 &
              [...]
              $ firejail --dns.print=mygame

       --dns.print=pid
              Print DNS configuration for a sandbox identified by PID.

              Example:
              $ firejail --list
              3272:netblue:firejail --private firefox
              $ firejail --dns.print=3272

       --env=name=value
              Set environment variable in the new sandbox.

              Example:
              $ firejail --env=LD_LIBRARY_PATH=/opt/test/lib

       --force
              By default, if Firejail is started in an existing sandbox, it will run the  program
              in  a  bash  shell.   This  option  disables  this  behavior, and attempts to start
              Firejail in the existing sandbox.  There could be lots of reasons for it  to  fail,
              for  example if the existing sandbox disables admin capabilities, SUID binaries, or
              if it runs seccomp.

       --fs.print=name
              Print the filesystem log for the sandbox identified by name.

              Example:
              $ firejail --name=mygame --caps.drop=all warzone2100 &
              [...]
              $ firejail --fs.print=mygame

       --fs.print=pid
              Print the filesystem log for a sandbox identified by PID.

              Example:
              $ firejail --list
              3272:netblue:firejail --private firefox
              $ firejail --fs.print=3272

       -?, --help
              Print options end exit.

       --hostname=name
              Set sandbox hostname.

              Example:
              $ firejail --hostname=officepc firefox

       --ignore=command
              Ignore command in profile file.

              Example:
              $ firejail --ignore=shell --ignore=seccomp firefox

       --interface=interface
              Move interface in a new network namespace. Up to four --interface  options  can  be
              specified.  Note: wlan devices are not supported for this option.

              Example:
              $ firejail --interface=eth1 --interface=eth0.vlan100

       --ip=address
              Assign  IP  addresses  to  the  last network interface defined by a --net option. A
              default gateway is assigned by default.

              Example:
              $ firejail --net=eth0 --ip=10.10.20.56 firefox

       --ip=none
              No IP address and no default gateway are configured for the last interface  defined
              by  a  --net  option.  Use this option in case you intend to start an external DHCP
              client in the sandbox.

              Example:
              $ firejail --net=eth0 --ip=none

       --ip6=address
              Assign IPv6 addresses to the last network interface defined by a --net option.

              Example:
              $ firejail --net=eth0 --ip6=2001:0db8:0:f101::1/64 firefox

       --iprange=address,address
              Assign an IP address in the provided range to the last network interface defined by
              a --net option. A default gateway is assigned by default.

              Example:
              $ firejail --net=eth0 --iprange=192.168.1.100,192.168.1.150

       --ipc-namespace
              Enable   a  new  IPC  namespace  if  the sandbox was started as a regular user. IPC
              namespace is enabled by default for sandboxes started as root.

              Example:
              $ firejail --ipc-namespace firefox

       --join=name
              Join the sandbox identified by name. By default a /bin/bash shell is started  after
              joining the sandbox.  If a program is specified, the program is run in the sandbox.
              If --join command is issued as a regular user, all security filters are  configured
              for the new process the same they are configured in the sandbox.  If --join command
              is issued as root, the security filters, cgroups and cpus  configurations  are  not
              applied to the process joining the sandbox.

              Example:
              $ firejail --name=mygame --caps.drop=all warzone2100 &
              [...]
              $ firejail --join=mygame

       --join=pid
              Join  the sandbox identified by process ID. By default a /bin/bash shell is started
              after joining the sandbox.  If a program is specified, the program is  run  in  the
              sandbox.  If  --join  command is issued as a regular user, all security filters are
              configured for the new process the same they are configured  in  the  sandbox.   If
              --join  command  is  issued  as  root,  the  security  filters,  cgroups  and  cpus
              configurations are not applied to the process joining the sandbox.

              Example:
              $ firejail --list
              3272:netblue:firejail --private firefox
              $ firejail --join=3272

       --join-filesystem=name
              Join the mount namespace of the sandbox identified by name. By default a  /bin/bash
              shell is started after joining the sandbox.  If a program is specified, the program
              is run in the sandbox. This command is  available  only  to  root  user.   Security
              filters, cgroups and cpus configurations are not applied to the process joining the
              sandbox.

       --join-filesystem=pid
              Join the mount namespace of the sandbox identified by  process  ID.  By  default  a
              /bin/bash  shell  is started after joining the sandbox.  If a program is specified,
              the program is run in the sandbox. This command is available  only  to  root  user.
              Security  filters,  cgroups  and cpus configurations are not applied to the process
              joining the sandbox.

       --join-network=name
              Join the network namespace  of  the  sandbox  identified  by  name.  By  default  a
              /bin/bash  shell  is started after joining the sandbox.  If a program is specified,
              the program is run in the sandbox. This command is available  only  to  root  user.
              Security  filters,  cgroups  and cpus configurations are not applied to the process
              joining the sandbox.

       --join-network=pid
              Join the network namespace of the sandbox identified by process ID.  By  default  a
              /bin/bash  shell  is started after joining the sandbox.  If a program is specified,
              the program is run in the sandbox. This command is available  only  to  root  user.
              Security  filters,  cgroups  and cpus configurations are not applied to the process
              joining the sandbox.

       --list List all sandboxes, see MONITORING section for more details.

              Example:
              $ firejail --list
              7015:netblue:firejail firefox
              7056:netblue:firejail --net=eth0 transmission-gtk
              7064:netblue:firejail --noroot xterm
              $

       --mac=address
              Assign MAC addresses to the last network interface defined by a --net option.

              Example:
              $ firejail --net=eth0 --mac=00:11:22:33:44:55 firefox

       --mtu=number
              Assign a MTU value to the last network interface defined by a --net option.

              Example:
              $ firejail --net=eth0 --mtu=1492

       --name=name
              Set sandbox name. Several options, such as --join and --shutdown, can use this name
              to identify a sandbox.

              Example:
              $ firejail --name=mybrowser firefox

       --net=bridge_interface
              Enable  a  new  network  namespace and connect it to this bridge interface.  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  bridge  device
              IP  address.  Up  to  four  --net  bridge devices can be defined. Mixing bridge and
              macvlan devices is allowed.  Note: wlan devices are not supported for this option.

              Example:
              $ sudo brctl addbr br0
              $ sudo ifconfig br0 10.10.20.1/24
              $ sudo brctl addbr br1
              $ sudo ifconfig br1 10.10.30.1/24
              $ firejail --net=br0 --net=br1

       --net=ethernet_interface
              Enable a new network namespace and connect it to this ethernet interface using  the
              standard  Linux  macvlan 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 devices can be
              defined.  Mixing bridge and macvlan devices is allowed.  Note: wlan devices are not
              supported for this option.

              Example:
              $ firejail --net=eth0 --ip=192.168.1.80 --dns=8.8.8.8 firefox

       --net=none
              Enable a new, unconnected network namespace. The only interface  available  in  the
              new  namespace  is  a new loopback interface (lo).  Use this option to deny network
              access to programs that don't really need network access.

              Example:
              $ firejail --net=none vlc

       --netfilter
              Enable a default client network filter in the new network namespace.   New  network
              namespaces  are  created  using  --net  option.  If a new network namespaces is not
              created, --netfilter option does nothing.  The default filter is as follows:

              *filter
              :INPUT DROP [0:0]
              :FORWARD DROP [0:0]
              :OUTPUT ACCEPT [0:0]
              -A INPUT -i lo -j ACCEPT
              -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
              -A INPUT -p icmp --icmp-type destination-unreachable -j ACCEPT
              -A INPUT -p icmp --icmp-type time-exceeded -j ACCEPT
              -A INPUT -p icmp --icmp-type echo-request -j ACCEPT
              COMMIT

              Example:
              $ firejail --net=eth0 --netfilter firefox

       --netfilter=filename
              Enable the network filter specified by filename in the new network  namespace.  The
              filter  file  format  is  the format of iptables-save and iptable-restore commands.
              New network namespaces are created using --net option. If a new network  namespaces
              is not created, --netfilter option does nothing.

              The following filters are available in /etc/firejail directory:

              webserver.net  is  a  webserver  filter that allows access only to TCP ports 80 and
              443.  Example:

              $ firejail --netfilter=/etc/firejail/webserver.net --net=eth0 \
              /etc/init.d/apache2 start

              nolocal.net is a client filter that disable access to local network. Example:

              $ firejail --netfilter=/etc/firejail/nolocal.net \
              --net=eth0 firefox

       --netfilter6=filename
              Enable the IPv6 network filter specified by filename in the new network  namespace.
              The  filter  file  format  is  the  format  of  ip6tables-save and ip6table-restore
              commands.  New network namespaces are created using --net option. If a new  network
              namespaces is not created, --netfilter6 option does nothing.

       --netstats
              Monitor network namespace statistics, see MONITORING section for more details.

              Example:

              $ firejail --netstats
              PID  User    RX(KB/s) TX(KB/s) Command
              1294 netblue 53.355   1.473    firejail --net=eth0 firefox
              7383 netblue 9.045    0.112    firejail --net=eth0 transmission

       --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

       --nogroups
              Disable supplementary groups. Without this option, supplementary groups are enabled
              for the user starting the sandbox. For root user supplementary  groups  are  always
              disabled.

              Example:
              $ id
              uid=1000(netblue)                                                 gid=1000(netblue)
              groups=1000(netblue),24(cdrom),25(floppy),27(sudo),29(audio)
              $ firejail --nogroups
              Parent pid 8704, child pid 8705
              Child process initialized
              $ id
              uid=1000(netblue) gid=1000(netblue) groups=1000(netblue)
              $

       --noprofile
              Do not use a security profile.

              Example:
              $ firejail
              Reading profile /etc/firejail/generic.profile
              Parent pid 8553, child pid 8554
              Child process initialized
              [...]

              $ firejail --noprofile
              Parent pid 8553, child pid 8554
              Child process initialized
              [...]

       --noroot
              Install a user namespace with a single user - the current user.  root user does not
              exist  in  the  new  namespace.  This option requires a Linux kernel version 3.8 or
              newer. The option is not supported for --chroot and  --overlay  configurations,  or
              for sandboxes started as root.

              Example:
              $ firejail --noroot
              Parent pid 8553, child pid 8554
              Child process initialized
              $ ping google.com
              ping: icmp open socket: Operation not permitted
              $

       --nosound
              Disable sound system.

              Example:
              $ firejail --nosound firefox

       --output=logfile
              stdout  logging  and log rotation. Copy stdout to logfile, and keep the size of the
              file under 500KB using log rotation. Five files with prefixes .1 to .5 are used  in
              rotation.

              Example:
              $ firejail --output=sandboxlog /bin/bash
              [...]
              $ ls -l sandboxlog*
              -rw-r--r-- 1 netblue netblue 333890 Jun  2 07:48 sandboxlog
              -rw-r--r-- 1 netblue netblue 511488 Jun  2 07:48 sandboxlog.1
              -rw-r--r-- 1 netblue netblue 511488 Jun  2 07:48 sandboxlog.2
              -rw-r--r-- 1 netblue netblue 511488 Jun  2 07:48 sandboxlog.3
              -rw-r--r-- 1 netblue netblue 511488 Jun  2 07:48 sandboxlog.4
              -rw-r--r-- 1 netblue netblue 511488 Jun  2 07:48 sandboxlog.5

       --overlay
              Mount  a  filesystem  overlay  on  top  of  the  current filesystem. All filesystem
              modifications go into the  overlay.   The  overlay  is  stored  in  $HOME/.firejail
              directory.

              OverlayFS  support  is required in Linux kernel for this option to work.  OverlayFS
              was officially introduced in Linux kernel version 3.18

              Example:
              $ firejail --overlay firefox

       --overlay-tmpfs
              Mount a filesystem overlay  on  top  of  the  current  filesystem.  All  filesystem
              modifications go into the overlay, and are discarded when the sandbox is closed.

              OverlayFS  support  is required in Linux kernel for this option to work.  OverlayFS
              was officially introduced in Linux kernel version 3.18

              Example:
              $ firejail --overlay-tmpfs firefox

       --overlay-clean
              Clean all overlays stored  in  $HOME/.firejail  directory.  Overlays  created  with
              --overlay-path=path outside $HOME/.firejail will not be deleted.

              Example:
              $ firejail --overlay-clean

       --private
              Mount   new   /root  and  /home/user  directories  in  temporary  filesystems.  All
              modifications are discarded when the sandbox is closed.

              Example:
              $ firejail --private firefox

       --private=directory
              Use directory as user home.

              Example:
              $ firejail --private=/home/netblue/firefox-home firefox

       --private-bin=file,file
              Build a new /bin in a temporary filesystem, and copy the programs in the list.  The
              same directory is also bind-mounted over /sbin, /usr/bin and /usr/sbin.

              Example:
              $ firejail --private-bin=bash,sed,ls,cat
              Parent pid 20841, child pid 20842
              Child process initialized
              $ ls /bin
              bash  cat  ls  sed

       --private-dev
              Create  a  new  /dev directory. Only dri, null, full, zero, tty, pts, ptmx, random,
              urandom, log and shm devices are available.

              Example:
              $ firejail --private-dev
              Parent pid 9887, child pid 9888
              Child process initialized
              $ ls /dev
              dri  full  log  null  ptmx  pts  random  shm  tty  urandom  zero
              $

       --private-etc=file,directory
              Build a new /etc in a temporary filesystem, and copy the files and  directories  in
              the list.  All modifications are discarded when the sandbox is closed.

              Example:
              $ firejail --private-etc=group,hostname,localtime, \
              nsswitch.conf,passwd,resolv.conf

       --private-tmp
              Mount an empty temporary filesystem on top of /tmp directory.

              Example:
              $ firejail --private-tmp

       --profile=filename
              Load  a custom security profile from filename. For filename use an absolute path or
              a path relative to the current path.  For more information, see  SECURITY  PROFILES
              section below.

              Example:
              $ firejail --profile=myprofile

       --profile-path=directory
              Use this directory to look for profile files. Use an absolute path or a path in the
              home directory starting with ~/.   For  more  information,  see  SECURITY  PROFILES
              section below and RELOCATING PROFILE FILES in man 5 firejail-profile.

              Example:
              $ firejail --profile-path=~/myprofiles
              $ firejail --profile-path=/home/netblue/myprofiles

       --protocol=protocol,protocol,protocol
              Enable  protocol  filter.  The  filter  is  based  on  seccomp and checks the first
              argument to socket system call.  Recognized values: unix, inet, inet6, netlink  and
              packet.

              Example:
              $ firejail --protocol=unix,inet,inet6 firefox

       --protocol.print=name
              Print the protocol filter for the sandbox identified by name.

              Example:
              $ firejail --name=mybrowser firefox &
              [...]
              $ firejail --print.print=mybrowser
              unix,inet,inet6,netlink

       --protocol.print=pid
              Print the protocol filter for a sandbox identified by PID.

              Example:
              $ firejail --list
              3272:netblue:firejail --private firefox
              $ firejail --protocol.print=3272
              unix,inet,inet6,netlink

       --quiet
              Turn off Firejail's output.

       --read-only=dirname_or_filename
              Set directory or file read-only.

              Example:
              $ firejail --read-only=~/.mozilla firefox

       --rlimit-fsize=number
              Set the maximum file size that can be created by a process.

       --rlimit-nofile=number
              Set the maximum number of files that can be opened by a process.

       --rlimit-nproc=number
              Set the maximum number of processes that can be created for the real user ID of the
              calling process.

       --rlimit-sigpending=number
              Set the maximum number of pending signals for a process.

       --scan ARP-scan all the networks from inside a network namespace.  This makes it  possible
              to detect macvlan kernel device drivers running on the current host.

              Example:
              $ firejail --net=eth0 --scan

       --seccomp
              Enable  seccomp  filter and blacklist the syscalls in the default list. The default
              list  is  as  follows:  mount,  umount2,   ptrace,   kexec_load,   kexec_file_load,
              open_by_handle_at,  init_module, finit_module, delete_module, iopl, ioperm, swapon,
              swapoff,  syslog,  process_vm_readv,  process_vm_writev,  sysfs,_sysctl,  adjtimex,
              clock_adjtime,   lookup_dcookie,  perf_event_open,  fanotify_init,  kcmp,  add_key,
              request_key, keyctl, uselib, acct, modify_ldt,  pivot_root,  io_setup,  io_destroy,
              io_getevents,   io_submit,   io_cancel,   remap_file_pages,  mbind,  get_mempolicy,
              set_mempolicy, migrate_pages, move_pages, vmsplice, perf_event_open and chroot.

              Example:
              $ firejail --seccomp

       --seccomp=syscall,syscall,syscall
              Enable seccomp filter, blacklist the default list and the syscalls specified by the
              command.

              Example:
              $ firejail --seccomp=utime,utimensat,utimes firefox

       --seccomp.drop=syscall,syscall,syscall
              Enable seccomp filter, and blacklist the syscalls specified by the command.

              Example:
              $ firejail --seccomp.drop=utime,utimensat,utimes

       --seccomp.keep=syscall,syscall,syscall
              Enable seccomp filter, and whitelist the syscalls specified by the command.

              Example:
              $ firejail --shell=none --seccomp.keep=poll,select,[...] transmission-gtk

       --seccomp.<errno>=syscall,syscall,syscall
              Enable seccomp filter, and return errno for the syscalls specified by the command.

              Example: a Bash shell where deleting files is disabled

              $ firejail --seccomp.eperm=unlinkat
              Parent pid 10662, child pid 10663
              Child process initialized
              $ touch testfile
              $ rm testfile
              rm: cannot remove `testfile': Operation not permitted

       --seccomp.print=name
              Print the seccomp filter for the sandbox started using --name option.

              Example:
              $ firejail --name=browser firefox &
              $ firejail --seccomp.print=browser
              SECCOMP Filter:
                VALIDATE_ARCHITECTURE
                EXAMINE_SYSCALL
                BLACKLIST 165 mount
                BLACKLIST 166 umount2
                BLACKLIST 101 ptrace
                BLACKLIST 246 kexec_load
                BLACKLIST 304 open_by_handle_at
                BLACKLIST 175 init_module
                BLACKLIST 176 delete_module
                BLACKLIST 172 iopl
                BLACKLIST 173 ioperm
                BLACKLIST 167 swapon
                BLACKLIST 168 swapoff
                BLACKLIST 103 syslog
                BLACKLIST 310 process_vm_readv
                BLACKLIST 311 process_vm_writev
                BLACKLIST 133 mknod
                BLACKLIST 139 sysfs
                BLACKLIST 156 _sysctl
                BLACKLIST 159 adjtimex
                BLACKLIST 305 clock_adjtime
                BLACKLIST 212 lookup_dcookie
                BLACKLIST 298 perf_event_open
                BLACKLIST 300 fanotify_init
                RETURN_ALLOW
              $

       --seccomp.print=pid
              Print the seccomp filter for the sandbox specified by process ID. Use --list option
              to get a list of all active sandboxes.

              Example:
              $ firejail --list
              10786:netblue:firejail --name=browser firefox $ firejail --seccomp.print=10786
              SECCOMP Filter:
                VALIDATE_ARCHITECTURE
                EXAMINE_SYSCAL
                BLACKLIST 165 mount
                BLACKLIST 166 umount2
                BLACKLIST 101 ptrace
                BLACKLIST 246 kexec_load
                BLACKLIST 304 open_by_handle_at
                BLACKLIST 175 init_module
                BLACKLIST 176 delete_module
                BLACKLIST 172 iopl
                BLACKLIST 173 ioperm
                BLACKLIST 167 swapon
                BLACKLIST 168 swapoff
                BLACKLIST 103 syslog
                BLACKLIST 310 process_vm_readv
                BLACKLIST 311 process_vm_writev
                BLACKLIST 133 mknod
                BLACKLIST 139 sysfs
                BLACKLIST 156 _sysctl
                BLACKLIST 159 adjtimex
                BLACKLIST 305 clock_adjtime
                BLACKLIST 212 lookup_dcookie
                BLACKLIST 298 perf_event_open
                BLACKLIST 300 fanotify_init
                RETURN_ALLOW
              $

       --shell=none
              Run the program directly, without a user shell.

              Example:
              $ firejail --shell=none script.sh

       --shell=program
              Set default user shell. Use this shell  to  run  the  application  using  -c  shell
              option.   For  example  "firejail  --shell=/bin/dash  firefox"  will  start Mozilla
              Firefox as "/bin/dash -c firefox".  By default  Bash  shell  (/bin/bash)  is  used.
              Options such as --zsh and --csh can also set the default shell.

              Example: $firejail --shell=/bin/dash script.sh

       --shutdown=name
              Shutdown the sandbox started using --name option.

              Example:
              $ firejail --name=mygame --caps.drop=all warzone2100 &
              [...]
              $ firejail --shutdown=mygame

       --shutdown=pid
              Shutdown  the  sandbox  specified by process ID. Use --list option to get a list of
              all active sandboxes.

              Example:
              $ firejail --list
              3272:netblue:firejail --private firefox
              $ firejail --shutdown=3272

       --tmpfs=dirname
              Mount a tmpfs filesystem on directory dirname. This option is available  only  when
              running the sandbox as root.

              Example:
              # firejail --tmpfs=/var

       --top  Monitor the most CPU-intensive sandboxes, see MONITORING section for more details.

              Example:
              $ firejail --top

       --trace
              Trace open, access and connect system calls.

              Example:
              $ firejail --trace wget -q www.debian.org
              Parent pid 11793, child pid 11794
              Child process initialized
              1:bash:open /dev/tty
              1:wget:fopen64 /etc/wgetrc
              1:wget:fopen /etc/hosts
              1:wget:socket AF_INET SOCK_DGRAM IPPROTO_IP
              1:wget:connect 8.8.8.8:53
              1:wget:socket AF_INET SOCK_STREAM IPPROTO_IP
              1:wget:connect 140.211.15.34:80
              1:wget:fopen64 index.html.1

              parent is shutting down, bye...

       --tracelog
              This  option  enables auditing blacklisted files and directories. A message is sent
              to syslog in case the file or the directory is accessed.

              Example:
              $ firejail --tracelog firefox

              Sample messages:
              $ sudo tail -f /var/log/syslog
              [...]
              Dec  3 11:43:25 debian firejail[70]:  blacklist  violation  -  sandbox  26370,  exe
              firefox, syscall open64, path /etc/shadow
              Dec   3  11:46:17  debian  firejail[70]:  blacklist  violation - sandbox 26370, exe
              firefox, syscall opendir, path /boot
              [...]

       --tree Print a tree of all sandboxed processes, see MONITORING section for more details.

              Example:
              $ firejail --tree
              11903:netblue:firejail iceweasel
                11904:netblue:iceweasel
                  11957:netblue:/usr/lib/iceweasel/plugin-container
              11969:netblue:firejail --net=eth0 transmission-gtk
                11970:netblue:transmission-gtk

       --user=new-user
              Switch the user before starting the sandbox. This command should be run as root.

              Example:
              # firejail --user=www-data

       --version
              Print program version and exit.

              Example:
              $ firejail --version
              firejail version 0.9.27

       --whitelist=dirname_or_filename
              Whitelist directory or file. This feature is implemented only for user home,  /dev,
              /media,  /opt,  /var,  and /tmp directories.  When whitlisting symbolic links, both
              the link and the real file should be in the same top directory (home user,  /media,
              /var etc.)

              Example:
              $ firejail --whitelist=~/.mozilla --whitelist=~/Downloads
              $ firejail --whitelist=/tmp/.X11-unix --whitelist=/dev/null
              $ firejail "--whitelist=/home/username/My Virtual Machines"

       --zsh  Use /usr/bin/zsh as default user shell.

              Example:
              $ firejail --zsh

TRAFFIC SHAPING

       Network bandwidth is an expensive resource shared among all sandboxes running on a system.
       Traffic shaping allows the user to increase network performance by controlling the  amount
       of data that flows into and out of the sandboxes.

       Firejail  implements  a simple rate-limiting shaper based on Linux command tc.  The shaper
       works at sandbox level, and can be used only for sandboxes  configured  with  new  network
       namespaces.

       Set rate-limits:

            firejail --bandwidth={name|pid} set network download upload

       Clear rate-limits:

            firejail --bandwidth={name|pid} clear network

       Status:

            firejail --bandwidth={name|pid} status

       where:
            name - sandbox name
            pid - sandbox pid
            network - network interface as used by --net option
            download - download speed in KB/s (kilobyte per second)
            upload - upload speed in KB/s (kilobyte per second)

       Example:
            $ firejail --name=mybrowser --net=eth0 firefox &
            $ firejail --bandwidth=mybrowser set eth0 80 20
            $ firejail --bandwidth=mybrowser status
            $ firejail --bandwidth=mybrowser clear eth0

MONITORING

       Option  --list  prints  a  list  of all sandboxes. The format for each process entry is as
       follows:

            PID:USER:Command

       Option --tree prints the tree of processes running in the sandbox.  The  format  for  each
       process entry is as follows:

            PID:USER:Command

       Option --top is similar to the UNIX top command, however it applies only to sandboxes.

       Option  --netstats  prints  network statistics for active sandboxes installing new network
       namespaces.

       Listed below are the available fields  (columns)  in  alphabetical  order  for  --top  and
       --netstat options:

       Command
              Command used to start the sandbox.

       CPU%   CPU usage, the sandbox share of the elapsed CPU time since the last screen update

       PID    Unique process ID for the task controlling the sandbox.

       Prcs   Number of processes running in sandbox, including the controlling process.

       RES    Resident  Memory  Size  (KiB), sandbox non-swapped physical memory.  It is a sum of
              the RES values for all processes running in the sandbox.

       RX(KB/s)
              Network receive speed.

       SHR    Shared Memory Size (KiB), it reflects memory shared with other processes. It  is  a
              sum  of  the  SHR  values  for  all processes running in the sandbox, including the
              controlling process.

       TX(KB/s)
              Network transmit speed.

       Uptime Sandbox running time in hours:minutes:seconds format.

       User   The owner of the sandbox.

SECURITY PROFILES

       Several command line options can be passed to the program using  profile  files.  Firejail
       chooses the profile file as follows:

       1.  If  a  profile file is provided by the user with --profile option, the profile file is
       loaded.  Example:

              $ firejail --profile=/home/netblue/icecat.profile icecat
              Reading profile /home/netblue/icecat.profile
              [...]

       2.  If  a  profile  file  with  the  same  name  as  the   application   is   present   in
       ~/.config/firejail    directory    or   in   /etc/firejail,   the   profile   is   loaded.
       ~/.config/firejail takes precedence over /etc/firejail. Example:

              $ firejail icecat
              Command name #icecat#
              Found icecat profile in /home/netblue/.config/firejail directory
              Reading profile /home/netblue/.config/firejail/icecat.profile
              [...]

       3. Use default.profile file if the sandbox is started by a regular user, or server.profile
       file   if   the   sandbox   is  started  by  root.  Firejail  looks  for  these  files  in
       ~/.config/firejail directory, followed by /etc/firejail  directory.   To  disable  default
       profile loading, use --noprofile command option. Example:

              $ firejail
              Reading profile /etc/firejail/generic.profile
              Parent pid 8553, child pid 8554
              Child process initialized
              [...]

              $ firejail --noprofile
              Parent pid 8553, child pid 8554
              Child process initialized
              [...]

       See man 5 firejail-profile for profile file syntax information.

RESTRICTED SHELL

       To  configure  a restricted shell, replace /bin/bash with /usr/bin/firejail in /etc/passwd
       file  for  each  user  that  needs  to  be  restricted.  Alternatively,  you  can  specify
       /usr/bin/firejail  in adduser command:

       adduser --shell /usr/bin/firejail username

       Additional   arguments   passed   to  firejail  executable  upon  login  are  declared  in
       /etc/firejail/login.users file.

EXAMPLES

       firejail
              Start a regular /bin/bash session in sandbox.

       firejail firefox
              Start Mozilla Firefox.

       firejail --debug firefox
              Debug Firefox sandbox.

       firejail --private
              Start a /bin/bash session with a new tmpfs home directory.

       firejail --net=br0 ip=10.10.20.10
              Start a /bin/bash session in a new network namespace. The session is  connected  to
              the  main network using br0 bridge device. An IP address of 10.10.20.10 is assigned
              to the sandbox.

       firejail --net=br0 --net=br1 --net=br2
              Start a /bin/bash session in a new network namespace and connect it  to  br0,  br1,
              and br2 host bridge devices.

       firejail --list
              List all sandboxed processes.

LICENSE

       This program is free software; you can redistribute it and/or modify it under the terms of
       the GNU General Public License as  published  by  the  Free  Software  Foundation;  either
       version 2 of the License, or (at your option) any later version.

       Homepage: http://firejail.wordpress.com

SEE ALSO

       firemon(1), firejail-profile(5), firejail-login(5)