ist a full-featured, easy to use, application based personal firewall for linux. This software will give you the opportunity to decide which programs are allowed to connect to a network/the internet and will not just block IP adresses like many others do. Studies have shown that linux is becoming more and more interesting for criminals because the number of users grows every day. So is the best choice to protect yourself against trojans, viruses, rootkits and non-open-source software trying to connect to the internet without your permission.



Get your free version now and protect your system.

When starting the download, you agree that you are not allowed to copy or modify this software. We will not guarantee that this program works correctly.

  Installation instructions
2.70 Ubuntu, Kubuntu, Xubuntu
Download Package
  1. Add the package source "universe"
  2. Update local packages database:
    apt-get update
  3. Download, double click on the package to run gdebi(-kde) and select "Install Package". If you have already opened the file you will have to close gdebi(-kde) and open the package once again.
  4. Run the following commands:
    sudo lfwsetup
    sudo ln -fs ~/.Xauthority /root/.Xauthority
    sudo chown USERNAME.root ~/.Xauthority
    (you will have to replace USERNAME with your username)
  5. Restart your PC and enjoy the software

    If there are any problems write us an email.
Problems and questions
  • If you are using KDE and the software does not look as good as it should please install the following package for KDE 3
    sudo apt-get install gtk-qt-engine
    or this one for KDE 4,
    sudo apt-get install gtk-qt-engine-kde4
    create/edit the file /root/.gtkrc-2.0 and enter the following code for KDE 3
    include "/usr/share/themes/Qt/gtk-2.0/gtkrc"

    style "user-font"
        font_name="Sans Serif 10"
    widget_class "*" style "user-font"

    gtk-font-name="Sans Serif 10"
    or for KDE 4
    include "/usr/share/themes/Qt4/gtk-2.0/gtkrc"

    style "user-font"
        font_name="Sans Serif"
    widget_class "*" style "user-font"

    gtk-font-name="Sans Serif 10"
  • If there is no orange lock in the taskbar after you logged in you will have to start the user interface manually from the menu. Otherwise you will not be able to give your programs the permission to access the internet.
    In KDE you can try to solve the problem with the following command:
    sudo apt-get install kdesudo
  • If there are for any reason problems starting Gnome/KDE/Xfce run
    sudo rm /etc/xdg/autostart/*linux-firewall*
    and start the interface manually after you logged in.
  • If you do not want the daemon to start automatically, open the terminal and enter
    sudo mv /etc/rcS.d/*linux-firewall* /etc/init.d
    Both - the daemon and the GUI have to be running. Otherwise the firewall will not work.


If there are any questions of if you want to report bugs, write an email to