7. Linux Systems
Some systems are more secure out of the box than others.
Unfortunately, Linux is not one of them.
As distributed, most Linux distributions (e.g. RedHat) have may things
turned on by default that you donít need.
Be sure to edit all of the files in the start-up directory /etc/rc.d/init.d
and shut off anything you donít need. For
example, if you donít need your system to be a web server, rename the start-up
script that executes at boot time. If
you donít want mail to come in or out, donít start up Sendmail.
While Linux is a free and powerful operating system, it can
be dangerous if you donít know what youíre doing. It is also one of the more popular systems for hackers to
develop their code on because the software is free and all of the source code is
available. As a result, Linux is
one of the first operating systems where users discover that there is a new
If you run Linux, be sure to keep up with all of the latest
security patches and developments. See
http://ww.linux.org for more information and
be sure you know what programs are running on all ports. If you simply install it from the CDROM and make no other
changes, your system will not be very secure.