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→Configuring a Basic Ubuntu Linux Firewall
Now that we have defined what we want to install we now need to install it. To do so, simply click on the ''Apply'' button located in the Synaptic toolbar and click ''Apply'' in the Summary dialog. The package manager will now download and install the two packages. Close the completion dialog and exit Synaptic once the installation is finished.
Alternatively the ''lokkit'' and ''gnome-lokkit'' packages can be installed from the Ubuntu Linux command-line using the ''apt-get'' tool. The first step is to launch a terminal window to gain access to the command-line. To do this, click on the desktop ''Applications'' menu and select ''KonsoleTerminal'' from the ''System ToolsAccessories'' menu. The resulting dialog provides a Linux command-line prompt. Type the following at the prompt:
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