Lpi ibm 102

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LPI certification 102 (release 2) exam
prep, Part 3
Presented by developerWorks, your source for great tutorials
ibm.com/developerWorks

Table of Contents
If you're viewing this document online, you can click any of the topics below to link directly to that section.

1. Before you start .........................................................
2. TCP/IP networking.....................................................
3. Internet services ........................................................
4. Security overview ......................................................
5. Printing ...................................................................
6. Summary and resources ..............................................

LPI certification 102 (release 2) exam prep, Part 3

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ibm.com/developerWorks

Presented by developerWorks, your source for great tutorials

Section 1. Before you start
About this tutorial
Welcome to "Networking," the third of four tutorials designed to prepare you for the Linux
Professional Institute's 102 exam. In this tutorial, we'll introduce you to TCP/IP and Ethernet
Linux networking fundamentals,show you how to use the inetd and xinetd superservers,
share important tips for securing your Linux systems, and show you how to set up and use a
Linux print server.
This tutorial is ideal for those who want to learn about or improve their basic Linux
networking and security skills. It's especially appropriate for those who will be setting up
applications on Linux servers or desktops. Formany, much of this material will be new, but
more experienced Linux users may find this tutorial to be a great way of rounding out their
important Linux system administration skills. If you are new to Linux, we recommend you
start with Part 1 and work through the series from there.
By the end of this series of tutorials (eight in all; this is part seven), you'll have the knowledge
you need tobecome a Linux Systems Administrator and will be ready to attain an LPIC Level
1 certification (exams 101 and 102) from the Linux Professional Institute if you so choose.
For those who have taken the release 1 version of this tutorial for reasons other than LPI
exam preparation, you probably don't need to take this one. However, if you do plan to take
the exams, you should strongly considerreading this revised tutorial.
The LPI logo is a trademark of the Linux Professional Institute.

About the authors
For technical questions about the content of this tutorial, contact the authors:
• Daniel Robbins, at drobbins@gentoo.org
• Chris Houser, at chouser@gentoo.org
• Aron Griffis, at agriffis@gentoo.org

Daniel Robbins lives in Albuquerque, New Mexico, and is the Chief Architect ofGentoo
Technologies, Inc., the creator of Gentoo Linux, an advanced Linux for the PC, and the
Portage system, a next-generation ports system for Linux. He has also served as a
contributing author for the Macmillan books Caldera OpenLinux Unleashed, SuSE Linux
Unleashed, and Samba Unleashed. Daniel has been involved with computers in some
fashion since the second grade, when he was first exposedto the Logo programming
language as well as to a potentially dangerous dose of Pac Man. This probably explains why
he has since served as a Lead Graphic Artist at Sony Electronic Publishing/Psygnosis.
Daniel enjoys spending time with his wife, Mary, and their daughter, Hadassah.
Chris Houser, known to his friends as "Chouser," has been a UNIX proponent since 1994
when he joined theadministration team for the computer science network at Taylor
University in Indiana, where he earned his Bachelor's degree in Computer Science and
Mathematics. Since then, he has gone on to work in Web application programming, user
interface design, professional video software support, and now Tru64 UNIX device driver
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LPI certification 102 (release 2) exam prep, Part 3

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