"If I have an option of giving a brief description about
firewall I would say 'a program or hardware device that filters the
information coming through the Internet connection into your
private network or computer system. If an incoming packet of
information is flagged by the filters, it is not allowed through.'
A firewall does not guarantee security but it is in most
environments the first line of defense against network based
"Firestarter is a friendly graphical interface that allows you
to configure a software firewall in Linux using the built-in
IPtables/IPchains utilities. It is an open source GUI firewall
program. The software aims to combine ease of use with powerful
features, therefore serving both Linux desktop users and system
administrators. By the end of this article, the user will be able
to install and configure Firestarter and will also be able to live
a secure and healthy life... over the internet."