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Overview
The Novell Certified Linux Engineer (CLE) Study Guide is designed to prepare you for the challenge of the most current CLE practicum. The author's experience as a certification trainer and system administrator will provide you with a real-world understanding of how to administer and troubleshoot Novell Linux products and services. Exam topics are covered through real-world examples with guided steps that were developed in the field. With the Novell Certified Linux Engineer (CLE) Study Guide, you will master the knowledge of administering and troubleshooting the Novell Linux systems and prepare for CLE exam success.
Product Details
| ISBN-13: | 9780672332722 |
|---|---|
| Publisher: | Pearson Education |
| Publication date: | 08/31/2005 |
| Series: | Novell Press |
| Sold by: | Barnes & Noble |
| Format: | eBook |
| Pages: | 624 |
| File size: | 17 MB |
| Note: | This product may take a few minutes to download. |
About the Author
Table of Contents
Introduction.
1. Introduction to the Certified Linux Engineer (CLE) Certification.
Introduction to the CLE 9.
CLE Versus CLE 9.
Paths to the CLE.
CLE 9 Objectives.
Introduction to the CLE 9 Test Environment.
Practical Testing Versus Traditional Testing.
How the CLE 9 Practicum Works.
Using This Study Guide.
Strategies and Tips for the CLE Practicum.
Summary.
2. Introduction to SUSE Linux Enterprise
Server 9 (SLES 9) 19
An Introduction to SUSE Linux Enterprise Server 9.
Installing SLES 9.
SLES 9 System Requirements.
Obtaining SLES 9.
Installing SLES 9.
Lab Exercise 2.1: Installing a SLES 9 Server.
SLES 9 Differences.
Working with YaST on SLES 9.
Managing SLES 9 with YaST.
Managing Network Settings Using YaST.
Managing Server Hardware with YaST.
Configuring Users and Groups in YaST.
Managing Services with YaST.
Lab Exercise 2.2: Working with YaST.
Summary.
3. Configuring DNS on SLES 9.
The Need for DNS.
Life Before DNS.
How DNS Works.
Installing DNS on SLES 9.
About BIND.
Installing BIND.
BIND Configuration Files.
Configuring BIND on SLES 9.
Lab Exercise 3.1: Configuring DNS.
Advanced DNS Configuration.
Configuring Forwarding.
Securing the DNS Server.
Configuring LDAP Support.
Lab Exercise 3.2: Advanced DNS Configuration.
Summary.
4. Configuring DHCP on SLES 9.
Managing DHCP Networks.
Statically Configuring IP Addresses.
Dynamically Assigning Addresses.
How DHCP Works.
Installing the DHCP Daemon.
Configuring the DHCP Daemon.
Configuring the /etc/dhcpd.conf File.
Configuring the /etc/sysconfig/dhcpd File.
Configuring dhcpd with YaST.
Lab Exercise 4.1: Configuring DHCP on SLES 9.
Configuring the DHCP Relay Agent.
The Problem with DHCP in a Routed Network.
Making DHCP Work in a Routed Network.
Configuring the dhcrelay Daemon.
Implementing Dynamic DNS.
How DDNS Works.
Configuring DDNS on SLES 9.
Lab Exercise 4.2: Configuring DDNS on SLES 9.
Summary.
5. Configuring CUPS on SLES 9.
How CUPS Works.
Welcome to the World of CUPS.
The CUPS Architecture.
The CUPS Printing Process.
Installing CUPS on SLES 9.
Working with CUPS on SLES 9.
CUPS Configuration Files.
Configuring CUPS on SLES 9.
Lab Exercise 5.1: Configuring CUPS on SLES 9.
Summary.
6. Configuring File and Print Services for Windows Clients on SLES 9.
An Overview of Samba.
Welcome to the World of Samba.
The Server Message Block Protocol.
Installing Samba on SLES 9.
Configuring Samba on SLES 9.
Windows Networking Overview.
Working with Samba Configuration Files.
Samba-Enabling User Accounts.
Configure a PDC Using Samba on SLES 9.
Configuring a PDC with YaST.
Lab Exercise 6.1: Configuring a PDC.
Summary.
7. Implementing Email Services on SLES 9.
An Introduction to Postfix.
How Email Works.
How Postfix Works.
Configuring Postfix on SLES 9.
Configuring MX Records.
Configuring Postfix.
Configuring SMTP Authentication.
Configuring IMAP and POP3 Support.
Lab Exercise 7.1: Configuring a Postfix Email Server.
Securing Postfix Against Viruses and Spam.
Preventing Spam.
Combating Email Viruses.
Summary.
8. Using SLES 9 to Manage Network Traffic.
Using ntop to Manage Network Traffic.
How ntop Works.
Installing and Configuring ntop on SLES 9.
Generating Reports with ntop.
Lab Exercise 8.1: Configuring ntop.
Using Nagios to Manage Network Traffic.
Installing and Configuring Nagios.
Checking Your Configuration and Starting Nagios.
Lab Exercise 8.2: Configuring Nagios.
Using SNMP to Manage Network Traffic.
How SNMP Works.
Installing and Configuring SNMP on SLES 9.
Lab Exercise 8.3: Configuring SNMP.
Using ethereal and tcpdump to Troubleshoot Network Problems.
Using tcpdump.
Using ethereal.
Lab Exercise 8.4: Using ethereal and tcpdump.
Summary.
9. Securing the SLES 9 Server.
Implementing a SLES 9 Server Security Plan.
Stay Abreast of Current Security Threats.
Keep Your System Software Up-to-Date with YOU.
Document the Server.
Physically Secure the Server.
Secure Services on the Server.
Monitoring the Server.
Analyzing Log Files.
Implementing an IDS.
Lab Exercise 9-1: Practicing With Security Tools.
Summary.
10. Implementing Packet Filter Firewalls with SLES 9.
How Firewalls Work.
The Role of a Firewall.
Designing a Firewall Implementation.
Implementing a Packet Filtering Firewall on SLES 9.
Implementing a Packet-Filtering Firewall with iptables.
Lab Exercise 10.1: Creating a Packet Filtering Firewall with iptables.
Configuring a Packet Filtering Firewall with YaST.
Implementing Network Address Translation (NAT) on SLES 9.
Lab Exercise 10.2: Creating a Packet-Filtering Firewall a NAT Router with YaST.
Implementing Application-Level Gateways on SLES 9.
Types of Proxy Servers.
Caching Hierarchies.
Implementing Generic Proxy Servers.
Implementing an Application-Specific Proxy with Squid.
Lab Exercise 10.3: Implementing Squid on SLES 9.
Summary.
11. Implementing Virtual Private Networks with SLES 9.
How VPNs Work.
Traditional WAN and Remote Access.
Using VPNs to Provide WAN Connectivity and Remote Access.
VPNs and Security.
VPN Components.
Implementing a VPN Server on SLES 9.
Creating and Exporting Certificates.
Configuring /etc/ipsec.conf.
Configuring VPNs with YaST.
Lab Exercise 11.1: Creating a VPN with YaST.
Summary.
12. Putting It All Together: Adding OpenSLP and Tomcat to Your Server.
Implementing OpenSLP on SLES 9.
Advertising Services with SAP.
How SLP Works.
Configuring OpenSLP.
Lab Exercise 12.1: Installing and Configuring SLP.
Statically Registering Services with slpd.
Lab Exercise 12.2: Creating a Static SLP Registration for CUPS.
Working with Tomcat on SLES 9.
How Tomcat Works.
Configuring Tomcat on SLES 9.
Lab Exercise 12.3: Implementing Tomcat on SLES 9.
Closing Thoughts: Preparing for the CLE 9 Practicum.
Summary.
Index.
Preface
Introduction
Congratulations on your choice to become a Certified Linux Engineer (CLE)! By purchasing this book, you are on your way to earning one of the hottest certifications around.
IntroductionWelcome to the world of Linux! As you will see in later chapters of this book, Novell has yet again revolutionized the Information Technology industry by providing one of the finest Linux distributions available: SUSE LINUX Enterprise Server 9 (SLES 9).
By providing an inexpensive, yet highly stable and scalable network operating system, Novell has raised a standard that other vendors will be hard pressed to match. In accordance, Novell Training Services has rolled out a certification program for SLES 9: The Certified Linux Engineer 9 (CLE 9).
Because of the complexity of the CLE 9 certification, Novell wants to make sure candidates really know their stuff with SLES 9. To do this, Novell has implemented a practical test for the certification. To pass, you must be able to walk the walk, not just talk the talk.
By gaining your CLE 9 certification, you tell the world that you can actually manage an SLES 9 deployment, not just answer a bunch of questions about the product in a multiple-choice exam. This gives you a strong competitive edge in a tight job market.
However, this hands-on approach to testing means the CLE 9 exam is much more difficult than most other certification exams you may have taken. The CLE 9 practical exam has a higher failure rate than most written IT certification exams. To pass, you must thoroughly prepare yourself.
That's where this book comes in! By reading this book and completing the lab exercises, you will be much better prepared than the average CLE 9 candidate.
In Chapter 1, "Introduction to the Certified Linux Engineer (CLE) Certification," I introduce you to the SLES 9 product and the CLE 9 certification program. I also provide you with some important exam tips and strategies that will increase your chances of passing.
In Chapter 2, "Introduction to SUSE Linux Enterprise Server 9," you are introduced to the SLES 9 operating system. You learn how to install a SLES 9 server and review how to manage the system configuration.
In Chapter 3, "Configuring DNS on SLES 9," you learn how to install and configure a BIND DNS server on your SLES 9 system.
In Chapter 4, "Configuring DHCP on SLES 9," you learn how to configure the DHCP service on your SLES 9 system.
In Chapter 5, "Configuring CUPS on SLES 9," you learn how to use CUPS to provide print services for your users.
In Chapter 6, "Configuring File and Print Services for Windows Clients on SLES 9," you learn how Linux can cross over into the Windows world by providing domain authentication and file storage services for Windows workstations.
In Chapter 7, "Implementing Email Services on SLES 9," you learn how to turn the simple Postfix daemon on your SLES 9 server into a full-fledged email solution with SMTP authentication and POP3/IMAP support.
In Chapter 8, "Using SLES 9 to Manage Network Traffic," you learn how to deploy and use a wide range of network monitoring utilities on your SLES 9 system. These include ntop, Nagios, ethereal, tcpdump, and an SNMP agent.
In Chapter 9, "Securing the SLES 9 Server," you are introduced into the wild world of network security. You learn steps you can take to secure your SLES server and learn how to use cryptography to secure services running on your server . This chapter also discusses network-related security issues as well as how to detect intruders who are trying to break into your system.
In Chapter 10, "Implementing Packet Filter Firewalls with SLES 9," you learn how to secure your network from intruders using a variety of firewall technologies that can be implemented right on your SLES 9 server.
In Chapter 11, "Implementing Virtual Private Networks with SLES 9," you learn how to implement WAN and remote access functionality over the Internet using VPNs.
Finally, in Chapter 12, "Putting It All Together: Adding OpenSLP and Tomcat to Your Server," you learn how you can implement an automated system for locating services in the network with the Service Location Protocol (SLP). You also learn how to deploy a web application server with Tomcat.
As you progress through this book, my goal is to provide you with a quality learning experience. I hope you find this book well written and easy to understand. I also hope you find it to be adequate preparation for your CLE 9 exam. However, no text is perfect. If you have suggestions for improvement, features you would like to see added, or corrections you believe need to be made, please feel free to email me at support@nebo-tech.com.
Best of luck to you in your CLE 9 certification pursuits!
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