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→Installing Firestarter on Ubuntu Linux
== Installing Firestarter on Ubuntu Linux ==
Firestarter is not installed when Ubuntu Linux is first installed. The first step in using Firestarter, therefore, is to install it.
Firestarter may be installed using either the Synaptic Package Manager or at the Linux command-line using the apt-get utility. TO download Firestarter using Synaptic select the ''System'' desktop menu and then click on ''Synaptic Package Manager'' in the ''Administration'' sub-menu. Enter your password when prompted to do so. Click on the ''Search'' button in the toolbar and search for ''firestarter''. You will see ''firestarter'' in the package list. Simply click check on the box and follow the instructions to install the firestarter package.
To install from the command line begin by opening a terminal window by selecting the ''Applications'' menu and selecting ''Konsole'' from the ''System Tools'' menu. In the terminal window enter the following command and press enter to execute it:
<pre>
sudo apt-get install firestarter
</pre>
Enter your passowrd when prompted to do so and wait while Firestarter is downloaded and installed.
== Running Firestarter ==
Firestarter will now be listed in the ''System->Administration'' desktop menu. To launch Firestarter select this menu option. The first time Firestarter is run it will ask a number of questions about your network environment. Click ''Forward'' on the first introductory screen to display the following screen:
[[Image:Example.jpg]]
Select the device on which you wish to have the firewall operate. If you are connected to a network this is likely to be eth0. If you are connected directly to a cable or DSL modem this may be ppp. If your system obtains an IP address from a DHCP server check this option. Click ''Forward''' when you are ready to move to the next screen:
[[Image:Example.jpg]]
This page controls whether Internet Connection Sharing is to used. Firestarter allows you to configure a single Linux system as the gateway to the internet. All other computers on your network then access the internet through the gateway system. The computers that access the internet through the gateway system will appear, to the outside world, to have the same IP address as the gateway system. This is essentially a mechanism for sharing a single internet connection amongst a network of multiple computers. Check ''Enable Internet Connection Sharing'' if you wish to use this feature. If you would like the system running Firestarter to also allocate IP addresses to the client machines also check the ''Enable DHCP for local network'' box.
If the option is disabled it may be that DHCP server is not installed on your system. To install it either use the Synaptic Package Manager to search for, and install a package called ''dhcp'' or install it from the command line as follows:
<pre>
sudo apt-get install dhcp
</pre>
Once the DHCP server is installed exit and restart Firestarter and this time the ''Enable DHCP for local network' option should be enabled.
