Sair Linux and Gnu Certification Level II: Core Concepts and Practices

by Sair Development Team

• ISBN13: 9780471405382
• ISBN10: 0471405388
• Format: Paperback
• Copyright: 2001-11-01
• Publisher: John Wiley & Sons Inc

Summary

Learn more, earn more with Linux certification! Sair Linux and GNU Certification(r) Level II: Core Concepts and Practices The Sair Linux and GNU Certification program, designed and developed by the industry-leading members of Sair Linux and GNU, Inc. and its advisory board, provides you with a clear path for improving your Linux and GNU skills and knowledge base. This new series of books will help you gain the necessary tools to become Linux and GNU certified, which can lead to more job opportunities and a higher salary! Level II: Core Concepts and Practices, the second volume in the series, is a study guide that arms you with valuable insight and additional know-how for mastering the required courses that all candidates must take in order to receive the Sair Linux and GNU Certified Engineer (LCE) certificate. In this manual, the Sair Linux and GNU Certification team draws upon its years of experience to provide essential guidance on how to pass Exam 3X0-201, plus the three additional exams from elective subjects, such as Apache and Web Servers, Sendmail and mail system components, Samba, and PHP and MySQL. With the help of detailed lab exercises, the Sair Linux and GNU Certification team walks you step-by-step through all the areas you need to know in order to pass the certification exam, including theory of operation, base system, shells and commands, system utilities, applications, and troubleshooting. With the growing popularity of Linux, organizations need a set of standards to ensure a high level of expertise among their employees. This book is essential for guaranteeing a command of Linux. The LCE test is based on the Core Concepts and Practices (CCP) Knowledge Matrix, and the book includes: A review of the Knowledge Matrix, objectives, and competencies Outlines of installation and configuration, system administration, networking, and security Study guides, lab exercises, and sample questions from the LCE exam Other books to look for in the Level II series: Level II: Apache and Web Servers Level II: Samba and Resource Sharing Level II: Sendmail and Mail Systems www.linuxcertification.com Wiley Computer Publishing Timely. Practical. Reliable. Visit our Web site at www.wiley.com/compbooks/

Table of Contents

Acknowledgments	ix
Introduction	xi
Part One Knowledge Matrix	1	(284)
Installation and Configuration	3	(76)
Objectives	3	(1)
Theory of Operation	3	(28)
Commercial Imaging Options	4	(3)
Open-Source Imaging Options	7	(3)
System Recovery Options	10	(8)
Display Manager Options	18	(3)
Overview of File Systems	21	(4)
Logical Volume Management (LVM)	25	(1)
What is RAID?	26	(4)
Journaling File Systems	30	(1)
Base Systems	31	(36)
NFS Installation of Linux	32	(3)
FTP Installation	35	(2)
Creating the Disks	37	(3)
Configuring the Display Manager	40	(4)
Installing a New Kernel	44	(4)
Logical Volume Management (LVM)	48	(6)
Advanced Mounting	54	(7)
Journaling File Systems versus Database Journaling	61	(1)
Different Journaling File Systems	62	(5)
System Utilities	67	(12)
Advanced Ext2fs Management	68	(11)
System Administration	79	(64)
Objectives	79	(1)
Theory of Operations	80	(29)
The Kernel	80	(1)
Kernel Version 2.4	80	(2)
Minimum Software Requirements	82	(1)
Sources of Kernel Documentation	83	(1)
Types of Files	83	(4)
Overview of the CPU	87	(4)
Performance	91	(2)
Performance Tuning-Memory	93	(1)
Performance-Tuning Storage Devices	94	(4)
Strategies for Server Management	98	(3)
Monitoring Performance	101	(2)
Log Files	103	(3)
Interpreting Log Data	106	(3)
Base Systems	109	(25)
Patching and Upgrading the Kernel	109	(2)
Loadable Device Drivers	111	(1)
Quotas	112	(4)
Sticky Bit	116	(4)
SGID	120	(3)
SUID	123	(3)
Improving the System's Memory	126	(1)
Linux Appliances	127	(7)
Shells and Commands	134	(9)
Basic Permissions	134	(2)
Advanced chmod	136	(3)
Memory Utilities	139	(4)
Networking	143	(98)
Objectives	143	(1)
Theory of Operations	143	(37)
Network Performance Tuning	144	(1)
Network Topologies and Protocols	145	(1)
DNS	146	(2)
How Does DNS Work?	148	(2)
Name Servers	150	(2)
Resolution	152	(4)
Overview and History of NIS/NIS+	156	(1)
NIS+ Overview	157	(2)
Introduction to NFS	159	(3)
Symbolic Links	162	(3)
NFS Naming Schemes	165	(1)
Introduction to Firewalls	166	(1)
Network Configuration	167	(1)
Packet Filtering	168	(3)
Proxy Service	171	(2)
Bastion Host Services	173	(1)
TCP / IP Packet Structure Revisited	174	(2)
Differences between ipchains and iptables	176	(2)
Bastion Host Configuration	178	(2)
Base Systems	180	(44)
Resource Records	180	(3)
Setting Up a Caching-Only Server	183	(5)
DNS Server Maintenance	188	(1)
How NIS/NIS+ Works	189	(2)
RPC Portmapper	191	(1)
Setting Up Master / Slave Servers	192	(2)
Setting Up NIS Clients	194	(3)
Configuration Files	197	(7)
/etc/hosts.allow and/etc/hosts.deny	204	(4)
Starting Services	208	(1)
Configuring an NFS Client	209	(4)
Optimizing NFS Services	213	(2)
Constructing the DMZ	215	(5)
ipchains Syntax, Rules, and Examples	220	(4)
Shells and Commands	224	(9)
Useful Utilities	224	(1)
Using DNS Utilities	225	(4)
ipchains Command Components	229	(1)
iptables	230	(2)
Other Tools of the Firewall Trade	232	(1)
Troubleshooting	233	(8)
Troubleshooting DNS	233	(2)
Troubleshooting NFS	235	(6)
Security	241	(44)
Objectives	241	(1)
Theory of Operations	242	(10)
Types of Attacks	242	(2)
Securing Your System	244	(1)
Local Security	245	(4)
Updating Systems	249	(3)
Base Systems	252	(18)
Security Problems with SUID and SGID	252	(1)
Mandatory Locking	253	(1)
NFS Security	254	(6)
Defining Your Security Policy	260	(2)
Isolating Key Systems	262	(3)
Web Server Security	265	(2)
TCP Wrappers	267	(3)
Applications	270	(15)
Defensive Programs	270	(4)
Popular Cracking Programs	274	(11)
Part Two Labs and Exercises	285	(58)
Internet Installation of Debian	287	(10)
Purpose	287	(1)
Theory	288	(2)
Lab Exercises	290	(4)
Questions	294	(1)
Answers	294	(1)
Advanced Questions	295	(2)
Partition Image	297	(6)
Purpose	297	(1)
Theory	297	(1)
Lab Exercises	298	(3)
Questions	301	(1)
Answers	301	(1)
Advanced Questions	301	(2)
Creating a Rescue Disk	303	(4)
Purpose	303	(1)
Theory	303	(1)
Lab Exercises	304	(1)
Questions	305	(1)
Answers	305	(1)
Advanced Question	305	(2)
Configuring and Optimizing the Kernel	307	(4)
Purpose	307	(1)
Theory	307	(1)
Lab Exercises	308	(2)
Questions	310	(1)
Answers	310	(1)
Advanced Questions	310	(1)
Configuring Linux to Use ReiserFS	311	(4)
Purpose	311	(1)
Theory	311	(1)
Lab Exercises	312	(2)
Questions	314	(1)
Answers	314	(1)
Advanced Question	314	(1)
Configuring Linux to Use JFS	315	(4)
Purpose	315	(1)
Theory	315	(1)
Lab Exercises	316	(2)
Questions	318	(1)
Answers	318	(1)
Advanced Question	318	(1)
Quotas	319	(4)
Purpose	319	(1)
Theory	319	(2)
Assigning Quotas	320	(1)
Checking Quotas	320	(1)
Lab Exercises	321	(1)
Questions	321	(1)
Answers	322	(1)
Advanced Question	322	(1)
Hardware Turning Using IRQTUNE	323	(4)
Purpose	323	(1)
Theory	323	(1)
Lab Exercises	323	(3)
Questions	326	(1)
Answers	326	(1)
Advanced Question	326	(1)
Configuring NIS Clients	327	(2)
Purpose	327	(1)
Theory	327	(1)
Lab Exercises	327	(1)
Questions	328	(1)
Answers	328	(1)
Advanced Question	328	(1)
Configuration of NFS and NIS	329	(6)
Purpose	329	(1)
Theory	329	(1)
Lab Exercises	330	(4)
Server Side-NIS Server	330	(1)
Server Side-NFS Server	331	(1)
Client Side-NFS Client	332	(1)
Client Side-NIS Client	332	(2)
Questions	334	(1)
Answers	334	(1)
Advanced Question	334	(1)
Firewall Configuration with ipchains	335	(4)
Purpose	335	(1)
Theory	335	(1)
Lab Exercises	335	(1)
Questions	336	(1)
Answers	337	(1)
Advanced Questions	337	(2)
Trojaning a Tarball	339	(4)
Purpose	339	(1)
Theory	339	(1)
Lab Exercises	340	(1)
Questions	341	(1)
Answers	342	(1)
Advanced Question	342	(1)
Part Three Practice Questions and Answers	343	(2)
Practice Questions	345	(24)
Answers	369	(12)
Glossary	381	(8)
Index	389