Red Hat Linux Networking and System Administration

by Collings, Terry; Wall, Kurt

• ISBN13: 9780764599491
• ISBN10: 0764599496
• Edition: 3rd
• Format: Paperback
• Copyright: 2005-10-21
• Publisher: Wiley

Summary

Starts with the basics of Red Hat, the leading Linux distribution in the U.S., such as network planning and Red Hat installation and configuration Offers a close look at the new Red Hat Enterprise Linux 4 and Fedora Core 4 releases New chapters cover configuring a database server, creating a VNC server, monitoring performance, providing Web services, exploring SELinux security basics, and exploring desktops Demonstrates how to maximize the use of Red Hat Network, upgrade and customize the kernel, install and upgrade software packages, and back up and restore the file system The four CDs contain the full Fedora Core 4 distribution

Author Biography

Terry Collings is the owner of TAC Technology, located in eastern Pennsylvania. He provides Linux consulting and training services to a variety of clients. Terry has been an adjunct faculty member at several colleges in his area where he has taught A+ and Network + certification courses. He also has taught courses on Unix, Linux, TCP/IP, and Novell Netware.
Terry is the author of Red Hat Enterprise Linux 4 For Dummies and has co-authored and contributed to several other Linux books. He has been a technical editor for the following books: KDE Bible, The Samba Book, Unix Weekend Crash Course, Red Hat Linux 9 For Dummies, Solaris 9 For Dummies, Fedora Linux 2 For Dummies, and Linux Timesaving Techniques For Dummies.

Kurt Wall first touched a computer in 1980 when he learned FORTRAN on an IBM mainframe of forgotten vintage; things have improved since then. A professional technical writer by trade, a historian by training, and an all-around Linux guy by avocation, Kurt’s work history is diverse. These days, Kurt works in the Customer Engineering group at TimeSys Corporation in Pittsburgh, Pennsylvania. His primary responsibilities include building and maintaining TimeSys’s Developer Exchange and working with portal customers and users. He also fixes broken servers, writes documentation, and builds TimeSys software.
Kurt, who dislikes writing about himself in the third person, receives entirely too much e-mail at [e-mail].

Table of Contents

Preface	ix
Acknowledgments	xv
Part One System and Network Administration Defined	1	(202)
Duties of the System Administrator	3	(10)
The Linux System Administrator	3	(2)
Installing and Configuring Servers	5	(1)
Installing and Configuring Application Software	6	(1)
Creating and Maintaining User Accounts	7	(1)
Backing Up and Restoring Files	7	(2)
Monitoring and Tuning Performance	9	(1)
Configuring a Secure System	10	(2)
Using Tools to Monitor Security	12	(1)
Summary	12	(1)
Planning the Network	13	(16)
Deciding How Your Network Will Be Used	13	(8)
Understanding Topologies	15	(1)
Star Topology	15	(1)
Bus Topology	16	(1)
Ring Topology	16	(1)
Tree Topology	17	(1)
Client-Server or Peer-to-Peer?	18	(1)
What's in the Mix?	19	(1)
Determining System Requirements	20	(1)
Planning and Implementing Security	21	(2)
Addressing External and Internal Threats	21	(1)
Formulating a Security Policy	22	(1)
An Effective Password Policy	22	(1)
General Security Rules	22	(1)
Security Updates	23	(1)
An Appropriate Firewall System	23	(1)
Planning for Recovery from Disasters	23	(3)
Clustering Solutions	24	(1)
Disaster Recovery	25	(1)
Writing It Down: Good Records Can Save Your Job	26	(2)
Summary	28	(1)
Standard Installation	29	(42)
Exploring Your PC's Components	30	(4)
Processor	30	(1)
Bus	30	(1)
Memory	31	(1)
Video Card and Monitor	31	(1)
Hard Drive	32	(1)
Floppy Disk Drive	32	(1)
Keyboard and Mouse	33	(1)
SCSI Controller	33	(1)
CD/DVD-R/RW Drive	33	(1)
Sound Card	33	(1)
Network Card	34	(1)
Checking for Supported Hardware	34	(1)
Creating the Red Hat Boot Disk	35	(1)
Starting the Installation	36	(6)
Partitioning the Hard Disk	42	(3)
Using Disk Druid to Partition Your Disks	45	(6)
Naming Disks and Devices	45	(1)
Mounting a File System	46	(1)
Understanding the Swap Partition	47	(1)
Preparing Disk Partitions	47	(2)
Setting Up the Partitions	49	(2)
Configuring the Installation	51	(11)
Installing the Boot Loader	51	(3)
Configuring the Network	54	(2)
Configuring the Firewall	56	(2)
Choosing Additional Languages	58	(1)
Setting the Time Zone	59	(2)
Setting the Root Password	61	(1)
Selecting the Package Groups to Install	62	(3)
Running Firstboot	65	(5)
Summary	70	(1)
Kickstart Installation	71	(26)
Using the Kickstart Configurator	71	(1)
Installing the Kickstart Configurator	72	(21)
Boot Loader Options Screen	77	(1)
Partition Information Screen	78	(5)
Network Configuration	83	(1)
Authentication	84	(2)
Firewall Configuration	86	(1)
Display Configuration	87	(3)
Package Selection	90	(1)
Pre-Installation Script	91	(1)
Post-Installation Script	92	(1)
Starting the Kickstart Installation	93	(3)
Creating a Bootable Floppy	93	(1)
Creating a Bootable CD-ROM	94	(1)
Starting a Kickstart Installation	95	(1)
Summary	96	(1)
Exploring the Desktops	97	(30)
Examining the Graphical Login Screen	97	(2)
Logging In and Using the GNOME Desktop	99	(11)
Playing with the Panel	101	(1)
Managing Applets on the Panel	102	(1)
Choosing Items from the Applications Menu in Fedora Core	103	(2)
Choosing Items from the Places Menu in Fedora Core	105	(1)
Choosing Items from the Desktop Menu in Fedora Core	106	(1)
Choosing Items from the Applications Menu on Enterprise Linux	107	(2)
Choosing Actions from the Actions Menu in Enterprise Linux	109	(1)
Using the Nautilus File Manager	110	(8)
Displaying Your Home Folder	112	(1)
Displaying the Contents of a Folder	112	(1)
Opening Files	112	(1)
Accessing FTP Sites	113	(1)
Using Bookmarks	113	(1)
Adding a Bookmark	113	(1)
Editing Bookmarks	113	(1)
Deleting Bookmarks	114	(1)
Managing Your Files and Folders	114	(1)
Customizing the Nautilus File Manager	115	(1)
Editing File Manager Preferences	115	(2)
Changing the File Manager Background and Icon Emblems	117	(1)
Showing and Hiding Views	118	(1)
Configuring GNOME	118	(1)
Logging Out	119	(1)
Taking a Look at KDE	119	(5)
Managing Applets	121	(1)
Choosing Applications from the Applications Menu	122	(2)
Using the Konqueror File Manager	124	(2)
Logging Out of KDE	126	(1)
Summary	126	(1)
System Startup and Shutdown	127	(14)
Examining the Boot Process	128	(8)
The Boot Loader	128	(2)
Using GRUB during Boot	130	(2)
The Kernel	132	(1)
The/sbin/init Program	133	(3)
Exploring Runlevels	136	(1)
Changing the System Runlevel	136	(1)
Starting Programs at System Boot	137	(1)
Shutting Down the System	138	(1)
GRUB Configuration File	139	(1)
Summary	140	(1)
The File System Explained	141	(22)
Understanding the File System Structure	141	(3)
The/Directory	143	(1)
Working with Linux-Supported File Systems	144	(5)
ext3	145	(1)
ext2	146	(1)
reiserfs	146	(1)
SystemV	147	(1)
ufs	147	(1)
FAT	147	(1)
NTFS	147	(1)
IBM JFS	147	(1)
SGI XFS	148	(1)
Nonstandard Linux File Systems	148	(1)
FREEVxFS	148	(1)
GFS	148	(1)
Memory and Virtual File Systems	149	(6)
cramfs	149	(1)
tmpfs	149	(1)
ramfs	150	(1)
romfs	150	(1)
proc	150	(1)
Proc Software Information	150	(2)
Proc Hardware Information	152	(2)
/dev/pts	154	(1)
devfs	154	(1)
sysfs	155	(1)
Linux Disk Management	155	(6)
Disk Partitioning on an x86 Machine	155	(1)
Mounting Other OS Partitions/Slices	155	(1)
Metadevices	156	(1)
Logical Volumes	156	(4)
RAID	160	(1)
Summary	161	(2)
Examining the System Configuration Files	163	(40)
Examining the System Configuration Files	164	(11)
Systemwide Shell Configuration Scripts	164	(1)
Shell Config Scripts: bashrc, csh.cshrc, zshrc	165	(2)
bash, tcsh, zsh, and Their Config File Read Orders	167	(1)
System Environmental Settings	168	(1)
/etc/motd	168	(1)
issue	168	(1)
issue.net	168	(1)
aliases	169	(1)
fstab	169	(1)
grub.conf	170	(1)
cron files	171	(1)
syslog.conf	172	(2)
ld.so.conf	174	(1)
logrotate.conf	174	(1)
Examining the /etc/sysconfig/Directory	175	(13)
/etc/sysconfig/apmd	176	(1)
/etc/sysconfig/authconfig	177	(1)
/etc/sysconfig/clock	177	(1)
/etc/sysconfig/crond	178	(1)
/etc/sysconfig/desktop	178	(1)
/etc/sysconfig/firstboot	178	(1)
/etc/sysconfig/grub	178	(1)
/etc/sysconfig/harddisks	178	(1)
/etc/sysconfig/hwconf	179	(1)
/etc/sysconfig/i18n	179	(1)
/etc/sysconfig/init	179	(1)
/etc/sysconfig/iptables	180	(1)
/etc/sysconfig/irda	181	(1)
/etc/sysconfig/kernel	181	(1)
/etc/sysconfig/keyboard	181	(1)
/etc/sysconfig/kudzu	182	(1)
/etc/sysconfig/mouse	182	(1)
/etc/sysconfig/named	183	(1)
/etc/sysconfig/netdump	183	(1)
/etc/sysconfig/network	184	(1)
/etc/sysconfig/ntpd	184	(1)
/etc/sysconfig/pcmcia	184	(1)
/etc/sysconfig/selinux	185	(1)
/etc/sysconfig/system-config-users	185	(1)
/etc/sysconfig/system-logviewer	185	(1)
/etc/sysconfig/samba	186	(1)
/etc/sysconfig/sendmail	186	(1)
/etc/sysconfig/vncservers	186	(1)
/etc/sysconfig/xinetd	187	(1)
Directories in the /etc/sysconfig/ Directory	187	(1)
apm-scripts	187	(1)
daemons	187	(1)
networking	187	(1)
network-scripts	188	(1)
rhn	188	(1)
Examining the Network Configuration Files	188	(8)
Files to Change When Setting Up a System or Moving the System	188	(1)
Setting Up the IP Address	189	(1)
Setting Up the Hostname	190	(1)
Setting Up the DNS Name Resolution	190	(1)
Making a Local File of Hostname to IP Address Mappings	191	(1)
Setting Up Name Service Resolution Order	192	(1)
Starting Up Network Services from xinetd	193	(1)
Starting Up Network Services from the rc Scripts	194	(1)
Other Important Network Configuration Files in the /etc/sysconfig Directory	195	(1)
static-routes	195	(1)
Iptables	195	(1)
Network Configuration Files in /etc/sysconfig/network-scripts	196	(1)
ifcfg-networkinterfacename	196	(1)
ifup and ifdown	196	(1)
Managing the init Scripts	196	(6)
Managing rc Scripts by Hand	198	(2)
Managing rc Scripts Using chkconfig	200	(2)
Summary	202	(1)
Part Two Network Services	203	(224)
Managing the X Window System	205	(12)
Configuring the X Server with the X Configuration Tool	205	(5)
Changing the Display Resolution	206	(1)
Changing the Display Color Depth	207	(1)
Changing Monitor Type Settings	207	(1)
Changing Your Video Card Type	208	(1)
Configuring Dual Monitors	209	(1)
Manually Configuring Your X Server	210	(5)
The X Server Configuration File	210	(5)
Summary	215	(2)
Configuring Printers	217	(12)
Configuring Printers with the Printer Configuration Tool	217	(8)
Configuring the Print Queue	219	(5)
Selecting the Print Driver	224	(1)
Editing the Printer Configuration	225	(2)
Deleting a Printer	227	(1)
Setting the Default Printer	227	(1)
Managing Print Jobs	227	(1)
Summary	228	(1)
TCP/IP Networking	229	(36)
TCP/IP Explained	229	(2)
Understanding Network Classes	231	(2)
Setting Up a Network Interface Card (NIC)	233	(5)
Configuring the Network Card	234	(1)
Configuring an Internal Network	235	(3)
Understanding Subnetting	238	(8)
Interpreting IP Numbers	240	(1)
Before You Subnet Your Network	241	(3)
Classless InterDomain Routing	244	(2)
Working with Gateways and Routers	246	(1)
Configuring Dynamic Host Configuration Protocol	247	(3)
Setting Up the Server	248	(2)
Configuring the DHCP Client	250	(1)
Configuring the Network Using the Network Configuration Tool	250	(9)
Adding an Ethernet Device	251	(3)
Adding a Wireless NIC	254	(2)
Adding a Modem Connection	256	(3)
Editing Your Network Configuration	259	(4)
Removing a NIC	259	(1)
Changing the NIC Configuration	260	(1)
Managing DNS Settings	261	(1)
Managing Hosts	261	(1)
Working with Profiles	262	(1)
Configuring IP Masquerading	263	(1)
Summary	263	(2)
The Network File System	265	(44)
NFS Overview	265	(6)
Understanding NFS	266	(2)
What's New with NFSv4?	268	(1)
NFS Advantages and Disadvantages	269	(2)
Planning an NFS Installation	271	(2)
Configuring an NFS Server	273	(23)
NFS Server Configuration and Status Files	274	(9)
NFS Server Daemons	283	(2)
NFS Server Scripts and Commands	285	(5)
Using Secure NFS	290	(1)
Example NFS Server	290	(2)
Using the NFS Server Configuration Tool	292	(4)
Configuring an NFS Client	296	(5)
Configuring an NFSv4 Client	299	(1)
Example NFS Client	300	(1)
Using Automount Services	301	(4)
Examining NFS Security	305	(3)
General NFS Security Issues	305	(1)
Server Security Considerations	306	(1)
Client Security Considerations	307	(1)
Summary	308	(1)
The Network Information System	309	(30)
Understanding NIS	309	(2)
Planning an NIS Installation	311	(4)
Configuring an NIS Server	315	(11)
Key Files and Commands	315	(6)
Starting the NIS Password Daemon	321	(1)
Starting the Server Transfer Daemon	321	(1)
Starting the NIS Servers at Boot Time	322	(2)
Configuring an Example NIS Server	324	(2)
Configuring an NIS Client	326	(8)
Setting the NIS Domain Name	326	(1)
Configuring and Starting the Client Daemon	326	(5)
Configuring the Client Startup Files	331	(1)
NIS Client Commands	331	(2)
Configuring an Example NIS Client	333	(1)
Using NIS and NFS Together	334	(3)
Summary	337	(2)
Connecting to Microsoft and Novell Networks	339	(12)
Installing Samba	340	(1)
Configuring the Samba Server	341	(3)
[global]	342	(1)
[homes]	343	(1)
[printers]	344	(1)
Creating Samba Users	344	(1)
Starting the Samba Server	345	(1)
Connecting to a Samba Client	345	(2)
Connecting from a Windows PC to the Samba Server	347	(1)
Connecting to Novell Networks	348	(2)
Summary	350	(1)
Configuring a Database Server	351	(30)
Linux Database Servers	351	(2)
Using MySQL	353	(9)
Securing the MySQL Installation	355	(4)
Using the MySQL Client Programs	359	(3)
Using PostgreSQL	362	(17)
Verifying the PostgreSQL Installation	365	(1)
Finalizing the PostgreSQL Installation	366	(1)
Initializing the Installation	366	(2)
Modifying Access Privileges	368	(4)
Creating a Test Database	372	(2)
Testing Connectivity to the Test Database	374	(1)
Using the PostgreSQL Client Programs	375	(4)
Summary	379	(2)
Creating a VNC Server	381	(12)
What Is VNC?	381	(2)
Setting Up a VNC Server	383	(5)
Configuring Your Firewall for VNC	384	(2)
Customizing the VNC Server	386	(2)
Testing the VNC	388	(4)
Summary	392	(1)
Providing Additional Network Services	393	(22)
Configuring a Time Server	394	(12)
Selecting a Time Server Solution	395	(1)
Configuring the Time Server	396	(1)
Selecting Reference Clocks	397	(4)
Configuring an NTP Client	401	(4)
Playing Nicely and Wisely with NTP	405	(1)
Providing a Caching Proxy Server	406	(8)
Verifying the Kernel Configuration	408	(1)
Configuring Squid	409	(2)
Modifying Netfilter	411	(1)
Starting Squid	412	(1)
Testing the Configuration	412	(2)
Summary	414	(1)
Optimizing Network Services	415	(12)
Optimizing the X Window System	416	(2)
Optimizing NFS	418	(5)
Optimizing NIS	423	(1)
Optimizing Samba Networking	423	(1)
Getting More from a Database Server	424	(1)
Summary	425	(2)
Part Three Internet Services	427	(168)
What Are Internet Services?	429	(14)
Learning about Secure Services	430	(4)
SSH	430	(1)
scp	431	(2)
sftp	433	(1)
Less Secure Services	434	(2)
Telnet	434	(1)
FTP	434	(1)
rsync	435	(1)
rsh	435	(1)
rlogin	435	(1)
finger	435	(1)
talk and ntalk	435	(1)
Using Your Linux Machine as a Server	436	(1)
HTTP	436	(1)
sshd	436	(1)
ftpd	436	(1)
DNS	437	(1)
Configuring the xinetd Server	437	(2)
Comparing xinetd and Standalone	439	(2)
xinetd-Started Services	439	(1)
Standalone Services	440	(1)
Configuring Linux Firewall Packages	441	(1)
Summary	441	(2)
Configuring BIND: The Domain Name System	443	(24)
Understanding DNS	443	(3)
Installing the Software	446	(1)
Understanding Types of Domain Servers	447	(2)
Examining Server Configuration Files	449	(12)
The named.conf file	450	(1)
Options	451	(3)
Include	454	(1)
Acl	455	(1)
Logging	455	(2)
server	457	(1)
zones	457	(1)
Zone Files	458	(1)
SOA --- Start of Authority	459	(1)
The Reverse Zone File	460	(1)
Configuring a Caching DNS Server	461	(1)
Configuring a Secondary Master DNS Server	462	(1)
Configuring a Primary Master Server	462	(2)
Checking Your Configuration	464	(2)
The Host Program	464	(1)
The dig Program	465	(1)
Summary	466	(1)
Configuring Mail Services	467	(24)
Email Explained	467	(3)
Tracing the Email Delivery Process	468	(1)
Mail User Agent (MUA)	468	(1)
Mail Transfer Agent (MTA)	469	(1)
Mail Delivery Agent (MDA)	469	(1)
Introducing SMTP	470	(2)
Understanding POP3	471	(1)
Understanding IMAP4	471	(1)
Configuring Sendmail	472	(7)
Configuring Sendmail	474	(1)
The m4 Macro Processor	475	(1)
Understanding and Managing the Mail Queue	476	(1)
Setting Up Aliases to Make Life Easier	476	(2)
Using Other Sendmail Files and Commands	478	(1)
Using the Postfix Mail Server	479	(5)
Switching to Postfix	479	(1)
Configuring Postfix	480	(2)
Running Postfix behind a Firewall or Gateway	482	(1)
Running Postfix on a Mail Host	483	(1)
Serving Email with POP3 and IMAP	484	(2)
Setting up an IMAP Server	485	(1)
Configuring Dovecot	485	(1)
Testing Cyrus	486	(1)
Maintaining Email Security	486	(3)
Protecting against Eavesdropping	487	(1)
Using Encryption	487	(1)
Using a Firewall	487	(1)
Don't Get Bombed, Spammed, or Spoofed	488	(1)
Be Careful with SMTP	488	(1)
Summary	489	(2)
Configuring FTP Services	491	(20)
Introducing vsftpd	492	(1)
Configuring vsftpd	493	(9)
Configuring User Level FTP Access	496	(1)
Configuring vsftpd Features	497	(4)
Disabling Anonymous FTP	501	(1)
Advanced FTP Server Configuration	502	(7)
Running vsftpd from xinetd	502	(1)
Enabling Anonymous Uploads	503	(1)
Enabling Guest User FTP Accounts	504	(3)
Running vsftpd over SSL	507	(2)
Using SFTP	509	(1)
Summary	510	(1)
Configuring a Web Server	511	(44)
Introducing Apache	511	(8)
Apache Features	512	(4)
Changes in Apache 2	516	(1)
How Web Servers Work	517	(2)
Configuring Apache	519	(21)
Apache's Startup Process	520	(1)
Configuring Global Behavior	521	(3)
Configuring the Default Server	524	(13)
Configuring Virtual Servers	537	(2)
Starting and Stopping Apache	539	(1)
Implementing SSI	540	(3)
Enabling CGI	543	(2)
Enabling PHP	545	(1)
Creating a Secure Server with SSL	546	(8)
Understanding SSL and Server Certificates	547	(2)
Creating a Self-Signed Certificate	549	(5)
Obtaining a Certificate from a Certification Authority	554	(1)
Summary	554	(1)
Providing Web Services	555	(26)
Creating Mailing Lists	555	(8)
Completing the Initial Mailman Configuration	556	(3)
Creating a Mailing List	559	(1)
Modifying a Mailing List's Configuration	560	(1)
Performing Common Mailman Administrative Tasks	561	(1)
Adding Multiple List Members	562	(1)
Hiding a Mailing List	562	(1)
Restricting Archives Access	563	(1)
Setting Up Web-Based Email	563	(4)
Connecting to SquirrelMail	563	(2)
Reconfiguring SquirrelMail	565	(2)
Configuring an RSS Feed	567	(7)
Selecting Content for an RSS Feed	570	(1)
Creating the Feed File	570	(2)
Turning on an RSS Feed	572	(2)
Adding Search Functionality	574	(5)
Getting Started with ht://Dig	574	(5)
Summary	579	(2)
Optimizing Internet Services	581	(14)
Optimizing LDAP Services	582	(1)
Optimizing DNS Services	583	(4)
Improving the Performance of DNS Clients	583	(2)
Tweaking DNS Servers	585	(1)
Logging	586	(1)
Optimizing Mail Services	587	(3)
Getting More from Sendmail	587	(1)
Getting More from Postfix	588	(2)
Optimizing FTP Services	590	(1)
Optimizing Web Services	590	(3)
Summary	593	(2)
Part Four System Administration	595	(238)
Keeping Your System Updated with up2date and the Red Hat Network	597	(18)
Using the Red Hat up2date Agent	598	(7)
Configuring the up2date Agent	599	(3)
Updating Your System	602	(3)
Registering Your System	605	(3)
Accessing the Red Hat Network with a Web Browser	608	(6)
Summary	614	(1)
Upgrading and Customizing the Kernel	615	(58)
Determining Whether to Upgrade to a New Kernel	616	(2)
Upgrading versus Customizing	618	(1)
Preparing to Upgrade	618	(1)
Installing a Kernel RPM	619	(1)
Getting the Kernel Source	620	(9)
Using the Kernel Source RPM	621	(2)
Using Pristine Kernel Source	623	(3)
Verifying and Unpacking the Archive	626	(1)
Patching the Kernel	627	(2)
Configuring the Kernel	629	(8)
Selecting a Kernel Configuration File	630	(3)
Configuring the Kernel with xconfig	633	(1)
Configuring the Kernel with menuconfig	634	(3)
Reviewing the Configuration Options	637	(23)
Code Maturity Level Options	637	(1)
General Setup	637	(3)
Loadable Module Support	640	(1)
Processor Type and Features	640	(3)
Power Management Options	643	(1)
Bus Options	643	(1)
Executable File Formats	644	(1)
Device Drivers	645	(1)
Generic Driver Options	645	(1)
Memory Technology Devices	645	(1)
Parallel Port Support	645	(1)
Plug and Play Support	646	(1)
Block Devices	646	(1)
ATA/ATAPI/MFM/RLL Support	647	(1)
SCSI Device Support	648	(1)
Old CD-ROM Drivers	648	(1)
Multidevice Support	649	(1)
Fusion MPT Device Support	649	(1)
IEEE 1394/FireWire Support	649	(1)
I2O Device Support	649	(1)
Networking Support	649	(4)
ISDN and Telephony	653	(1)
Input Device Support	653	(1)
Character Devices	654	(1)
I2C Support	654	(1)
Multimedia Devices	655	(1)
Graphics Support	655	(1)
Sound	656	(1)
USB Support	656	(4)
MMC/SD Card Support	660	(1)
InfiniBand Support	660	(1)
File Systems	660	(6)
CD-ROM/DVD File Systems	661	(1)
DOS/FAT/NT File Systems	661	(1)
Pseudo-File-Systems	662	(1)
Miscellaneous File Systems	662	(1)
Network File Systems	662	(1)
Partition Types	662	(1)
Native Language Support	663	(1)
Profiling Support	663	(1)
Kernel Hacking	664	(1)
Security Options	664	(1)
Cryptography Options	664	(1)
Library Routines	665	(1)
Saving the Kernel Configuration	665	(1)
Compiling the Kernel	666	(3)
Installing the Kernel	669	(1)
Updating GRUB	670	(1)
Summary	671	(2)
Configuring the System at the Command Line	673	(34)
Administrating Your System from the Command Line	673	(2)
Managing Processes	675	(8)
Obtaining Process Information	676	(4)
Signaling Processes	680	(2)
Modifying Process Priorities	682	(1)
Maintaining the File System	683	(13)
Working with File Systems	683	(1)
Creating and Manipulating Partitions	683	(2)
Creating and Manipulating File Systems	685	(6)
Working with Files and Directories	691	(4)
Managing Disk Space Usage	695	(1)
Timekeeping	696	(6)
Single-Use Commands	697	(5)
Using the Network Time Protocol	702	(1)
Automating Scripts	702	(3)
Running One-Shot Jobs with at	702	(2)
Running Regularly Scheduled Jobs with cron	704	(1)
Summary	705	(2)
Administering Users and Groups	707	(38)
Administering User Accounts	707	(23)
Working with User Accounts	708	(1)
The User Database Files	708	(7)
Modifying Multiple Accounts Simultaneously	715	(2)
Viewing Login and Process Information	717	(1)
Working with Group Accounts	718	(1)
Creating Groups	719	(1)
Modifying and Deleting Groups	720	(2)
Using a Shadowed Group File	722	(1)
Using User Private Groups	723	(2)
Administering Users and Groups with User Manager	725	(1)
Creating User Accounts	726	(1)
Modifying and Deleting User Accounts	727	(1)
Creating Group Accounts	728	(1)
Modifying and Deleting Group Accounts	729	(1)
Understanding the Root Account	730	(1)
Implementing Sudo	731	(6)
Deciphering Sudo's Configuration File	733	(4)
Sudo Configuration and Usage Tips	737	(1)
Using File System Quotas	737	(7)
Enabling Quotas	738	(1)
Creating the Quota Files	739	(1)
Turning on Quotas	740	(1)
Setting and Modifying Quotas	740	(2)
Viewing Quota Utilization	742	(2)
Summary	744	(1)
Installing and Upgrading Software Packages	745	(34)
Using the Red Hat Package Manager	745	(16)
General Options	746	(2)
Query Mode	748	(2)
Querying Package Dependencies	750	(1)
What's in That RPM?	751	(3)
Formatting Query Output	754	(1)
Package Installation and Removal	755	(1)
Installing RPMs	756	(1)
Upgrading RPMs	757	(1)
Removing RPMs	758	(1)
Verifying RPMs	758	(3)
Building Packages Using Source RPMs	761	(3)
Checking Software Versions	764	(3)
Obtaining Newer Software	767	(4)
Using Third-Party Sites to Find RPMs	768	(2)
Using Ibiblio.org	770	(1)
Installing Software from Source	771	(7)
Configuring the Build Environment	772	(1)
Unpacking the Source Code	772	(1)
Configuring the Source Code	773	(2)
Building the Software Package	775	(1)
Testing the Build	776	(1)
Installing the Software	777	(1)
Summary	778	(1)
Backing Up and Restoring the File System	779	(26)
Creating a Backup Plan	779	(2)
Choosing Media for Backups	781	(1)
Understanding Backup Methods	781	(2)
Tape Rotation	783	(1)
Using Backup Tools	784	(20)
Command Line Tools	784	(1)
Using mt-st	784	(3)
Using the cdrecord Package	787	(2)
Using dump	789	(1)
Using restore	790	(3)
Using tar	793	(2)
Advanced Tools	795	(1)
Using AMANDA	795	(9)
Summary	804	(1)
Performance Monitoring	805	(28)
System-Performance-Monitoring Tools	805	(1)
Measuring Memory Usage	806	(6)
Memory Usage as Seen by Users and Processes	806	(4)
Examining Kernel Memory Usage	810	(2)
Viewing Running Tasks	812	(10)
Getting Started with ps	813	(4)
Using top	817	(5)
Monitoring I/O Activity	822	(4)
Using sar	826	(5)
Monitoring Memory with sar	827	(2)
Monitoring CPU Usage with sar	829	(2)
Summary	831	(2)
Part Five System Security and Problem Solving	833	(72)
Exploring SELinux Security	835	(12)
Understanding SELinux	835	(3)
Mandatory and Role-Based Access Control	836	(2)
SELinux Policies	838	(1)
Using SELinux	838	(7)
Enabling SELinux Manually	842	(1)
Modifying the Targeted Policy	843	(2)
Finding More Information about SELinux	845	(1)
Summary	846	(1)
Implementing Network Security	847	(28)
Creating a Firewall	847	(4)
Installing, Configuring, and Using LDAP	851	(13)
Overview of LDAP Directory Organization	852	(3)
OpenLDAP Packages for Linux	855	(1)
Core OpenLDAP Server Files, Daemons, and Utilities	856	(1)
Configuring and Starting an OpenLDAP Server	857	(3)
Using OpenLDAP for System Authentication	860	(1)
Adding User, Password, and Group Entries to an LDAP Server	860	(1)
Updating Client Systems to Use LDAP Authentication	861	(3)
Installing, Configuring, and Using Kerberos	864	(10)
Kerberos Terminology, Machine Roles, and Reliability	865	(1)
Kerberos Packages for Linux	865	(1)
Core Kerberos Utilities	866	(1)
Installing and Configuring a Kerberos Server	867	(3)
Enabling Kerberos Clients and Applications	870	(1)
Using Kerberos for Login Authentication	871	(3)
Summary	874	(1)
Troubleshooting and Problem Solving	875	(30)
Troubleshooting Techniques	876	(2)
Step 1: Identify the Problem	876	(1)
Step 2: Reproduce the Problem	876	(1)
Step 3: Look for Changes	877	(1)
Step 4: Determine the Most Likely Cause	877	(1)
Step 5: Implement a Solution	878	(1)
Step 6: Keep Documentation	878	(1)
Troubleshooting Resources	878	(5)
The Internet	878	(1)
System Log Files	879	(3)
README Files	882	(1)
Solving Common Problems	883	(5)
Unable to Log In	883	(1)
Resetting a User's Password	883	(1)
Creating a User Account	883	(1)
Lost or Forgotten Root Password	884	(1)
CD-ROM Drive Not Detected during Installation	884	(1)
CD-ROM Drive Does Not Mount after Installation	885	(1)
Sound Does Not Work after Installation	885	(2)
Unable to Unmount a Drive	887	(1)
Shell Commands Don't Work	888	(1)
Solving File System Problems	888	(3)
Cannot Delete a File	889	(1)
Commands with Multiword Arguments	889	(1)
Accessing Windows File Systems	890	(1)
Working with Floppy Disks	890	(1)
Cannot Mount a Partition	891	(1)
Avoiding File System Checks at Each System Reboot	891	(1)
Solving Networking Problems	891	(5)
Getting Online with a Modern	893	(2)
The Boot Process Hangs	895	(1)
Using Two Ethernet Cards	896	(1)
Solving NFS Problems	896	(2)
Exploring Miscellaneous Problems	898	(6)
Solving Boot Problems	899	(1)
ht:/ /Dig Won't Run	900	(1)
Starting cyrus-imapd	900	(1)
Solving Laptop Video Problems	901	(1)
The Signal 7 and Signal 11 Problems	902	(1)
Using Screensavers and Power Management	903	(1)
Starting the X Window System	903	(1)
Making an Emergency Boot Disk	904	(1)
Summary	904	(1)
Appendix A Bash Shell Scripting	905	(38)
Using Wildcards and Special Characters	906	(3)
Using Variables	909	(4)
Using Bash Operators	913	(6)
Comparison Operators	913	(3)
Arithmetic Operators	916	(1)
File Test Operators	917	(2)
Understanding Flow Control	919	(9)
Conditional Execution Using if Statements	920	(2)
Determinate Loops Using the for Statement	922	(1)
Indeterminate Loops Using while and until Statements	923	(1)
Selection Structures Using case and select Statements	924	(1)
The case Statement	925	(1)
The select Statement	926	(2)
Using Shell Functions	928	(1)
Processing Input and Output	929	(5)
Redirecting I/O	929	(3)
String I/O	932	(2)
Working with Command Line Arguments	934	(2)
Using Processes and Job Control	936	(5)
Summary	941	(2)
Index	943