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NOTE: CentOS Enterprise Linux is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux.

Index

Symbols

.fetchmailrc, Fetchmail Configuration Options
global options, Global Options
server options, Server Options
user options, User Options
.procmailrc, Procmail Configuration
/boot/ directory, The /boot/ Directory
/etc/named.conf
see BIND
/etc/pam.conf, PAM Configuration Files
see also PAM
/etc/pam.d, PAM Configuration Files
see also PAM
/etc/sysconfig/ directory
see sysconfig directory
/lib/security/, PAM Configuration Files
see also PAM
/lib64/security/, PAM Configuration Files
see also PAM
/proc/ directory
see proc file system

A

aboot, Boot Loaders for Other Architectures
access control, TCP Wrappers and xinetd
AccessFileName
Apache configuration directive, AccessFileName
Action
Apache configuration directive, Action
activating your subscription, Activate Your Subscription
AddDescription
Apache configuration directive, AddDescription
AddEncoding
Apache configuration directive, AddEncoding
AddHandler
Apache configuration directive, AddHandler
AddIcon
Apache configuration directive, AddIcon
AddIconByEncoding
Apache configuration directive, AddIconByEncoding
AddIconByType
Apache configuration directive, AddIconByType
AddLanguage
Apache configuration directive, AddLanguage
AddType
Apache configuration directive, AddType
Alias
Apache configuration directive, Alias
Allow
Apache configuration directive, Allow
AllowOverride
Apache configuration directive, AllowOverride
Apache
see Apache HTTP Server
Apache HTTP Server
1.3
migration to 2.0, Migrating Apache HTTP Server 1.3 Configuration Files
2.0
features of, Features of Apache HTTP Server 2.0
file system changes, File System Changes in Apache HTTP Server 2.0
migration from 1.3, Migrating Apache HTTP Server 1.3 Configuration Files
MPM specific directives, MPM Specific Server-Pool Directives
packaging changes, Packaging Changes in Apache HTTP Server 2.0
additional resources, Additional Resources
related books, Related Books
useful websites, Useful Websites
configuration, Configuration Directives in httpd.conf
introducing, Apache HTTP Server
log files
/var/log/httpd/error_log, Configuration Directives in httpd.conf
combined log file format, LogFormat , CustomLog
format of, LogFormat
troubleshooting with, Configuration Directives in httpd.conf, KeepAlive
using log analyzer tools with, HostnameLookups
migration to 2.0, Migrating Apache HTTP Server 1.3 Configuration Files
bind addresses and ports, Interface and Port Binding
content negotiation, Content Negotiation
directory indexing, Directory Indexing
DSO Support, Dynamic Shared Object (DSO) Support
error documents, Error Documents
LDAP, The mod_authz_ldap Module
logging, Logging
module system changes, Modules and Apache HTTP Server 2.0
mod_auth_db, The mod_auth_dbm and mod_auth_db Modules
mod_auth_dbm, The mod_auth_dbm and mod_auth_db Modules
mod_include, The mod_include Module
mod_perl, The mod_perl Module
mod_proxy, The mod_proxy Module
mod_ssl, The mod_ssl Module
PHP, PHP
removed directives, Other Global Environment Changes
server-pool size, Server-Pool Size Regulation
SuexecUserGroup, The suexec Module, SuexecUserGroup
UserDir directive, UserDir Mapping
virtual host configuration, Virtual Host Configuration
Multi-Processing Modules
activating worker MPM, Server-Pool Size Regulation
prefork, Server-Pool Size Regulation
worker, Server-Pool Size Regulation
reloading, Starting and Stopping httpd
restarting, Starting and Stopping httpd
running without security, Virtual Hosts
server status reports, Location
starting, Starting and Stopping httpd
stopping, Starting and Stopping httpd
troubleshooting, Configuration Directives in httpd.conf
Apache HTTP Server modules, Default Modules
APXS Apache utility, Adding Modules
Authentication Configuration Tool
and LDAP, Configuring a System to Authenticate Using OpenLDAP, PAM and LDAP
autofs, autofs
see also NFS

B

Basic Input/Output System
see BIOS
Berkeley Internet Name Domain
see BIND
BIND
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
common mistakes, Common Mistakes to Avoid
configuration files
/etc/named.conf, BIND as a Nameserver, /etc/named.conf
/var/named/ directory, BIND as a Nameserver
zone files, Zone Files
configuration of
reverse name resolution, Reverse Name Resolution Zone Files
zone file directives, Zone File Directives
zone file examples, Example Zone File
zone file resource records, Zone File Resource Records
zone statements sample, Sample zone Statements
features, Advanced Features of BIND
DNS enhancements, DNS Protocol Enhancements
IPv6, IP version 6
multiple views, Multiple Views
security, Security
introducing, Berkeley Internet Name Domain (BIND), Introduction to DNS
named daemon, BIND as a Nameserver
nameserver
definition of, Introduction to DNS
nameserver types
caching-only, Nameserver Types
forwarding, Nameserver Types
master, Nameserver Types
slave, Nameserver Types
rndc program, Using rndc
/etc/rndc.conf, Configuring /etc/rndc.conf
command line options, Command Line Options
configuring keys, Configuring /etc/rndc.conf
configuring named to use, Configuring /etc/named.conf
root nameserver
definition of, Introduction to DNS
zones
definition of, Nameserver Zones
BIOS
definition of, The BIOS
see also boot process
block devices, /proc/devices
see also /proc/devices
definition of, /proc/devices
boot loaders, GRUB
see also GRUB
definition of, The GRUB Boot Loader
types of
ELILO, Boot Loaders and System Architecture
GRUB, Boot Loaders and System Architecture
OS/400, Boot Loaders and System Architecture
YABOOT, Boot Loaders and System Architecture
z/IPL, Boot Loaders and System Architecture
boot process, Boot Process, Init, and Shutdown, A Detailed Look at the Boot Process
see also boot loaders
chain loading, GRUB and the x86 Boot Process
direct loading, GRUB and the x86 Boot Process
for x86, A Detailed Look at the Boot Process
stages of, The Boot Process, A Detailed Look at the Boot Process
/sbin/init command, The /sbin/init Program
BIOS, The BIOS
boot loader, The Boot Loader
EFI shell, The BIOS
kernel, The Kernel
BrowserMatch
Apache configuration directive, BrowserMatch

C

cache directives for Apache, Cache Directives
CacheNegotiatedDocs
Apache configuration directive, CacheNegotiatedDocs
caching-only nameserver
see BIND
CGI scripts
allowing execution outside cgi-bin, Directory
outside the ScriptAlias, AddHandler
channel bonding
interface
configuration of, Channel Bonding Interfaces
module configuration, The Channel Bonding Module
module directives, bonding Module Directives
character devices, /proc/devices
see also /proc/devices
definition of, /proc/devices
chkconfig, Runlevel Utilities
see also services
configuration
Apache HTTP Server, Configuration Directives in httpd.conf
virtual hosts, Virtual Hosts
configuration directives, Apache, General Configuration Tips
AccessFileName, AccessFileName
Action, Action
AddDescription, AddDescription
AddEncoding, AddEncoding
AddHandler, AddHandler
AddIcon, AddIcon
AddIconByEncoding, AddIconByEncoding
AddIconByType, AddIconByType
AddLanguage, AddLanguage
AddType, AddType
Alias, Alias
Allow, Allow
AllowOverride, AllowOverride
BrowserMatch, BrowserMatch
CacheNegotiatedDocs, CacheNegotiatedDocs
CustomLog, CustomLog
DefaultIcon, DefaultIcon
DefaultType, DefaultType
Deny, Deny
Directory, Directory
DirectoryIndex, DirectoryIndex
DocumentRoot, DocumentRoot
ErrorDocument, ErrorDocument
ErrorLog, ErrorLog
ExtendedStatus, ExtendedStatus
for cache functionality, Cache Directives
Group, Group
HeaderName, HeaderName
HostnameLookups, HostnameLookups
IfDefine, IfDefine
IfModule, IfModule
Include, Include
IndexIgnore, IndexIgnore
IndexOptions, IndexOptions
KeepAlive, KeepAlive
see also KeepAliveTimeout
troubleshooting, KeepAlive
KeepAliveTimeout, KeepAliveTimeout
LanguagePriority, LanguagePriority
Listen, Listen
LoadModule, LoadModule
Location, Location
LogFormat
format options, LogFormat
LogLevel, LogLevel
MaxClients, MaxClients
MaxKeepAliveRequests, MaxKeepAliveRequests
MaxRequestsPerChild, MaxRequestsPerChild
MaxSpareServers, MinSpareServers and MaxSpareServers
MaxSpareThreads, MinSpareThreads and MaxSpareThreads
MinSpareServers, MinSpareServers and MaxSpareServers
MinSpareThreads, MinSpareThreads and MaxSpareThreads
NameVirtualHost, NameVirtualHost
Options, Options
Order, Order
PidFile, PidFile
Proxy, Proxy
ProxyRequests, ProxyRequests
ReadmeName, ReadmeName
Redirect, Redirect
ScriptAlias, ScriptAlias
ServerAdmin, ServerAdmin
ServerName, ServerName
ServerRoot, ServerRoot
ServerSignature, ServerSignature
SetEnvIf, SetEnvIf
SSL configuration, Configuration Directives for SSL
StartServers, StartServers
SuexecUserGroup, The suexec Module, SuexecUserGroup
ThreadsPerChild, ThreadsPerChild
Timeout, Timeout
TypesConfig, TypesConfig
UseCanonicalName, UseCanonicalName
User, User
UserDir, UserDir
VirtualHost, VirtualHost
conventions
document, Document Conventions
copying and pasting text
when using X, Copying and Pasting Text With X
CustomLog
Apache configuration directive, CustomLog

D

DefaultIcon
Apache configuration directive, DefaultIcon
DefaultType
Apache configuration directive, DefaultType
Denial of Service
prevention using xinetd, Resource Management Options
see also xinetd
Denial of Service attack, /proc/sys/net/
see also /proc/sys/net/ directory
definition of, /proc/sys/net/
Deny
Apache configuration directive, Deny
desktop environments
see X
dev directory, The /dev/ Directory
devices, local
ownership of, PAM and Device Ownership
see also PAM
directories
/boot/, The /boot/ Directory
/dev/, The /dev/ Directory
/etc/, The /etc/ Directory
/lib/, The /lib/ Directory
/media/, The /media/ Directory
/mnt/, The /mnt/ Directory
/opt/, The /opt/ Directory
/proc/, The /proc/ Directory
/sbin/, The /sbin/ Directory
/srv/, The /srv/ Directory
/sys/, The /sys/ Directory
/usr/, The /usr/ Directory
/usr/local/, The /usr/local/ Directory
/var/, The /var/ Directory
Directory
Apache configuration directive, Directory
DirectoryIndex
Apache configuration directive, DirectoryIndex
display managers
see X
DNS, Introduction to DNS
see also BIND
introducing, Introduction to DNS
documentation
experienced user, For the More Experienced
finding appropriate, Finding Appropriate Documentation
first-time users, Documentation For First-Time Linux Users
newsgroups, Introduction to Linux Newsgroups
websites, Introduction to Linux Websites
guru, Documentation for Linux Gurus
DocumentRoot
Apache configuration directive, DocumentRoot
changing, Virtual Hosts
changing shared, The Secure Web Server Virtual Host
DoS
see Denial of Service
DoS attack
see Denial of Service attack
drag and drop, Using the Mouse
drivers
see kernel modules
DSOs
loading, Adding Modules

E

EFI shell
definition of, The BIOS
see also boot process
ELILO, Boot Loaders for Other Architectures, Boot Loaders and System Architecture
see also boot loaders
email
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
Fetchmail, Fetchmail
history of, Email
Postfix, Postfix
Procmail, Mail Delivery Agents
program classifications, Email Program Classifications
protocols, Email Protocols
IMAP, IMAP
POP, POP
SMTP, SMTP
security, Securing Communication
clients, Secure Email Clients
servers, Securing Email Client Communications
Sendmail, Sendmail
spam
filtering out, Spam Filters
types
Mail Delivery Agent, Mail Delivery Agent
Mail Transfer Agent, Mail Transfer Agent
Mail User Agent, Mail User Agent
epoch, /proc/stat
see also /proc/stat
definition of, /proc/stat
ErrorDocument
Apache configuration directive, ErrorDocument
ErrorLog
Apache configuration directive, ErrorLog
etc directory, The /etc/ Directory
Ethernet
see network
Ethernet modules
see kernel modules
exec-shield
enabling, /proc/sys/kernel/
introducing, /proc/sys/kernel/
execution domains, /proc/execdomains
see also /proc/execdomains
definition of, /proc/execdomains
ExtendedStatus
Apache configuration directive, ExtendedStatus
Extensible Firmware Interface shell
see EFI shell

F

feedback
contact information, We Need Feedback!
Fetchmail, Fetchmail
additional resources, Additional Resources
command options, Fetchmail Command Options
informational, Informational or Debugging Options
special, Special Options
configuration options, Fetchmail Configuration Options
global options, Global Options
server options, Server Options
user options, User Options
FHS, FHS Organization, Overview of File System Hierarchy Standard (FHS)
see also file system
see also file system
file system
FHS standard, FHS Organization
hierarchy, Overview of File System Hierarchy Standard (FHS)
organization, FHS Organization
structure, File System Structure
virtual
see proc file system
files, proc file system
changing, Changing Virtual Files, Using the sysctl Command
viewing, Viewing Virtual Files, Using the sysctl Command
findsmb program, findsmb
forwarding nameserver
see BIND
frame buffer device, /proc/fb
see also /proc/fb
FrontPage, After Installation
fstab, /etc/fstab
see also NFS
FTP, FTP
see also vsftpd
active mode, Multiple Ports, Multiple Modes
command port, Multiple Ports, Multiple Modes
data port, Multiple Ports, Multiple Modes
definition of, FTP
introducing, The File Transport Protocol
passive mode, Multiple Ports, Multiple Modes
server software
Red Hat Content Accelerator, FTP Servers
vsftpd, FTP Servers

G

GNOME, Desktop Environments
see also X
Group
Apache configuration directive, Group
groups
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
GID, Users and Groups
introducing, Users and Groups
shared directories, Group Directories
standard, Standard Groups
tools for management of
groupadd, User and Group Management Tools, User Private Groups
redhat-config-users, User Private Groups
User Manager, User and Group Management Tools
user private, User Private Groups
GRUB, The Boot Loader, Boot Loaders and System Architecture
see also boot loaders
see also boot loaders
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
boot process, GRUB and the x86 Boot Process
Changing Runlevels at Boot Time, Changing Runlevels at Boot Time
changing runlevels with, GRUB Interfaces
commands, GRUB Commands
configuration file
/boot/grub/grub.conf, Configuration File Structure
structure, Configuration File Structure
definition of, GRUB
features, Features of GRUB
installing, Installing GRUB
interfaces, GRUB Interfaces
command line, GRUB Interfaces
menu, GRUB Interfaces
menu entry editor, GRUB Interfaces
order of, Interfaces Load Order
menu configuration file, GRUB Menu Configuration File
directives, Configuration File Directives
role in boot process, The Boot Loader
terminology, GRUB Terminology
devices, Device Names
files, File Names and Blocklists
root file system, The Root File System and GRUB
grub.conf, Configuration File Structure
see also GRUB

H

halt, Shutting Down
see also shutdown
HeaderName
Apache configuration directive, HeaderName
hierarchy, file system, Overview of File System Hierarchy Standard (FHS)
HostnameLookups
Apache configuration directive, HostnameLookups
hosts access files
see TCP wrappers
hosts.allow
see TCP wrappers
hosts.deny
see TCP wrappers
httpd.conf
see configuration directives, Apache
hugepages
configuration of, /proc/sys/vm/

I

IfDefine
Apache configuration directive, IfDefine
ifdown, Interface Control Scripts
IfModule
Apache configuration directive, IfModule
ifup, Interface Control Scripts
Include
Apache configuration directive, Include
IndexIgnore
Apache configuration directive, IndexIgnore
IndexOptions
Apache configuration directive, IndexOptions
init command, The /sbin/init Program
see also boot process
configuration files
/etc/inittab, SysV Init Runlevels
role in boot process, The /sbin/init Program
see also boot process
runlevels
directories for, SysV Init Runlevels
runlevels accessed by, Runlevels
SysV init
definition of, SysV Init Runlevels
initrd directory, Special File Locations Under Red Hat Enterprise Linux
introduction, Introduction
ip6tables
control scripts
panic, iptables Control Scripts
restart, iptables Control Scripts
save, iptables Control Scripts
start, iptables Control Scripts
status, iptables Control Scripts
stop, iptables Control Scripts
introducing, ip6tables and IPv6
ipchains
see iptables
IPsec
see network
iptables
/sbin/iptables-restore, Saving iptables Rules
/sbin/iptables-save, Saving iptables Rules
additional resources, Additional Resources
installed documentation, Installed Documentation
useful websites, Useful Websites
chains
target, Packet Filtering
compared with ipchains, Differences between iptables and ipchains
configuration files
/etc/sysconfig/iptables, Saving iptables Rules
/etc/sysconfig/iptables-config, iptables Control Scripts Configuration File
/etc/sysconfig/iptables.save, Saving iptables Rules
control scripts
panic, iptables Control Scripts
restart, iptables Control Scripts
save, Saving iptables Rules, iptables Control Scripts
start, iptables Control Scripts
status, iptables Control Scripts
stop, iptables Control Scripts
match options, iptables Match Options
modules, Additional Match Option Modules
options, Options Used within iptables Commands
commands, Command Options
listing, Listing Options
parameters, iptables Parameter Options
structure of, Structure of iptables Options
target, Target Options
overview of, iptables
packet filtering basics, Packet Filtering
protocols
ICMP, ICMP Protocol
TCP, TCP Protocol
UDP, UDP Protocol
rules list, Packet Filtering
saving rules, Saving iptables Rules
tables, Packet Filtering

K

KDE, Desktop Environments
see also X
KeepAlive
Apache configuration directive, KeepAlive
KeepAliveTimeout
Apache configuration directive, KeepAliveTimeout
Kerberos
additional resources, Additional Resources
installed documentation, Installed Documentation
useful websites, Useful Websites
advantages of, Advantages of Kerberos
and PAM, Kerberos and PAM
Authentication Server (AS), How Kerberos Works
clients set up, Configuring a Kerberos 5 Client
definition of, Kerberos
disadvantages of, Disadvantages of Kerberos
how it works, How Kerberos Works
Key Distribution Center (KDC), How Kerberos Works
server set up, Configuring a Kerberos 5 Server
terminology, Kerberos Terminology
Ticket-granting Server (TGS), How Kerberos Works
Ticket-granting Ticket (TGT), How Kerberos Works
kernel
role in boot process, The Kernel
kernel modules
Ethernet modules
parameters, Ethernet Parameters
supporting multiple cards, Using Multiple Ethernet Cards
introducing, General Parameters and Modules
module parameters
specifying, Specifying Module Parameters
SCSI modules
parameters, SCSI parameters
types of, General Parameters and Modules
kwin, Window Managers
see also X

L

LanguagePriority
Apache configuration directive, LanguagePriority
LDAP
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
advantages of, Why Use LDAP?
applications
ldapadd, OpenLDAP Daemons and Utilities
ldapdelete, OpenLDAP Daemons and Utilities
ldapmodify, OpenLDAP Daemons and Utilities
ldappasswd, OpenLDAP Daemons and Utilities
ldapsearch, OpenLDAP Daemons and Utilities
OpenLDAP suite, OpenLDAP Daemons and Utilities
slapadd, OpenLDAP Daemons and Utilities
slapcat, OpenLDAP Daemons and Utilities
slapd, OpenLDAP Daemons and Utilities
slapindex, OpenLDAP Daemons and Utilities
slappasswd, OpenLDAP Daemons and Utilities
slurpd, OpenLDAP Daemons and Utilities
utilities, OpenLDAP Daemons and Utilities
authentication using, Configuring a System to Authenticate Using OpenLDAP
Authentication Configuration Tool, Configuring a System to Authenticate Using OpenLDAP
editing /etc/ldap.conf, Configuring a System to Authenticate Using OpenLDAP
editing /etc/nsswitch.conf, Configuring a System to Authenticate Using OpenLDAP
editing /etc/openldap/ldap.conf, Configuring a System to Authenticate Using OpenLDAP
editing slapd.conf, Configuring a System to Authenticate Using OpenLDAP
packages, Configuring a System to Authenticate Using OpenLDAP
PAM, PAM and LDAP
setting up clients, Configuring a System to Authenticate Using OpenLDAP
client applications, LDAP Client Applications
configuration files
/etc/ldap.conf, OpenLDAP Configuration Files
/etc/openldap/ldap.conf, OpenLDAP Configuration Files
/etc/openldap/schema/ directory, OpenLDAP Configuration Files, The /etc/openldap/schema/ Directory
/etc/openldap/slapd.conf, OpenLDAP Configuration Files, Editing /etc/openldap/slapd.conf
daemons, OpenLDAP Daemons and Utilities
definition of, Lightweight Directory Access Protocol (LDAP)
LDAPv2, Lightweight Directory Access Protocol (LDAP)
LDAPv3, Lightweight Directory Access Protocol (LDAP)
LDIF
format of, LDAP Terminology
OpenLDAP features, OpenLDAP Features
setting up, OpenLDAP Setup Overview
migrating older directories, Migrating Directories from Earlier Releases
terminology, LDAP Terminology
upgrading directories, Migrating Directories from Earlier Releases
using with Apache HTTP Server, PHP4, LDAP, and the Apache HTTP Server
using with NSS, NSS, PAM, and LDAP
using with PAM, NSS, PAM, and LDAP
using with PHP4, PHP4, LDAP, and the Apache HTTP Server
ldapadd command, OpenLDAP Daemons and Utilities
see also LDAP
ldapdelete command, OpenLDAP Daemons and Utilities
see also LDAP
ldapmodify command, OpenLDAP Daemons and Utilities
see also LDAP
ldappasswd command, OpenLDAP Daemons and Utilities
see also LDAP
ldapsearch command, OpenLDAP Daemons and Utilities
see also LDAP
lib directory, The /lib/ Directory
Lightweight Directory Access Protocol
see LDAP
LILO, The Boot Loader
see also boot loaders
role in boot process, The Boot Loader
Listen
Apache configuration directive, Listen
LoadModule
Apache configuration directive, LoadModule
Location
Apache configuration directive, Location
LogFormat
Apache configuration directive, LogFormat
LogLevel
Apache configuration directive, LogLevel
lspci, /proc/pci

M

Mail Delivery Agent
see email
Mail Transfer Agent
see email
Mail User Agent
see email
make_smbcodepage program, make_smbcodepage
make_unicodemap program, make_unicodemap
Master Boot Record
see MBR
see MBR
master nameserver
see BIND
MaxClients
Apache configuration directive, MaxClients
MaxKeepAliveRequests
Apache configuration directive, MaxKeepAliveRequests
MaxRequestsPerChild
Apache configuration directive, MaxRequestsPerChild
MaxSpareServers
Apache configuration directive, MinSpareServers and MaxSpareServers
MaxSpareThreads
Apache configuration directive, MinSpareThreads and MaxSpareThreads
MBR
definition of, The BIOS, A Detailed Look at the Boot Process
see also boot loaders
see also boot process
MDA
see Mail Delivery Agent
media directory, The /media/ Directory
metacity, Window Managers
see also X
MinSpareServers
Apache configuration directive, MinSpareServers and MaxSpareServers
MinSpareThreads
Apache configuration directive, MinSpareThreads and MaxSpareThreads
mnt directory, The /mnt/ Directory
module parameters
see kernel modules
modules
see kernel modules
see kernel modules
Apache
loading, Adding Modules
the own, Adding Modules
default, Default Modules
mouse
how to use, Using the Mouse
MTA
see Mail Transfer Agent
MUA
see Mail User Agent
mwm, Window Managers
see also X

N

named daemon
see BIND
named.conf
see BIND
nameserver
see BIND
NameVirtualHost
Apache configuration directive, NameVirtualHost
net program, net
netfilter
see iptables
network
additional resources, Additional Resources
commands
/sbin/ifdown, Interface Control Scripts
/sbin/ifup, Interface Control Scripts
/sbin/service network, Interface Control Scripts
configuration, Interface Configuration Files
functions, Network Function Files
interfaces, Interface Configuration Files
alias, Alias and Clone Files
channel bonding, Channel Bonding Interfaces
clone, Alias and Clone Files
dialup, Dialup Interfaces
Ethernet, Ethernet Interfaces
IPsec, IPsec Interfaces
scripts, Network Interfaces
Network File System
see NFS
NFS
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
client
/etc/fstab, /etc/fstab
autofs, autofs
configuration, NFS Client Configuration Files
mount options, Common NFS Mount Options
condrestart, Starting and Stopping NFS
how it works, How It Works
introducing, Network File System (NFS)
portmap, NFS and portmap
reloading, Starting and Stopping NFS
required services, Required Services
restarting, Starting and Stopping NFS
security, Securing NFS
file permissions, File Permissions
host access, Host Access
NFSv2/NFSv3 host access, Using NFSv2 or NFSv3
NFSv4 host access, Using NFSv4
server configuration, NFS Server Configuration
/etc/exports, The /etc/exports Configuration File
exportfs command, The exportfs Command
exportfs command with NFSv4, Using exportfs with NFSv4
starting, Starting and Stopping NFS
status, Starting and Stopping NFS
stopping, Starting and Stopping NFS
TCP, How It Works
UDP, How It Works
NIC modules
see kernel modules
nmblookup program, nmblookup
non-secure Web server
disabling, The Secure Web Server Virtual Host
ntsysv, Runlevel Utilities
see also services

O

objects, dynamically shared
see DSOs
OpenLDAP
see LDAP
OpenSSH, Features of SSH
see also SSH
configuration files for, OpenSSH Configuration Files
opt directory, The /opt/ Directory
Options
Apache configuration directive, Options
Order
Apache configuration directive, Order
OS/400, Boot Loaders and System Architecture
see also boot loaders

P

packet filtering
see iptables
PAM
additional resources, Additional Resources
installed documentation, Installed Documentation
useful websites, Useful Websites
advantages of, Advantages of PAM
configuration files, PAM Configuration Files
control flags, Control Flag
definition of, Pluggable Authentication Modules (PAM)
Kerberos and, Kerberos and PAM
modules, Module Interface
arguments, Module Arguments
components, Module Interface
creating, Creating PAM Modules
interfaces, Module Interface
location of, Module Name
stacking, Stacking Module Interfaces, Sample PAM Configuration Files
pam_console
definition of, PAM and Device Ownership
pam_timestamp
authentication icon and, PAM and Administrative Credential Caching
definition of, PAM and Administrative Credential Caching
destroying timestamps, Removing the Timestamp File
directives, Common pam_timestamp Directives
pam_timestamp_check
destroying timestamp using, Removing the Timestamp File
sample configuration files, Sample PAM Configuration Files
service files, PAM Service Files
shadow passwords, Sample PAM Configuration Files
pam_console
see PAM
pam_timestamp
see PAM
pam_timestamp_check
see PAM
password, Sample PAM Configuration Files
see also PAM
shadow passwords, Sample PAM Configuration Files
passwords
shadow, Shadow Passwords
pdbedit program, pdbedit
PidFile
Apache configuration directive, PidFile
Pluggable Authentication Modules
see PAM
portmap, NFS and portmap
see also NFS
NFS, Troubleshooting NFS and portmap
rpcinfo, Troubleshooting NFS and portmap
status, Starting and Stopping NFS
Postfix, Postfix
default installation, The Default Postfix Installation
prefdm
see X
proc directory, The /proc/ Directory
proc file system
/proc/apm, /proc/apm
/proc/buddyinfo, /proc/buddyinfo
/proc/bus/ directory, /proc/bus/
/proc/cmdline, /proc/cmdline
/proc/cpuinfo, /proc/cpuinfo
/proc/crypto, /proc/crypto
/proc/devices
block devices, /proc/devices
character devices, /proc/devices
/proc/dma, /proc/dma
/proc/driver/ directory, /proc/driver/
/proc/execdomains, /proc/execdomains
/proc/fb, /proc/fb
/proc/filesystems, /proc/filesystems
/proc/fs/ directory, /proc/fs
/proc/ide/ directory, /proc/ide/
device directories, Device Directories
/proc/interrupts, /proc/interrupts
/proc/iomem, /proc/iomem
/proc/ioports, /proc/ioports
/proc/irq/ directory, /proc/irq/
/proc/kcore, /proc/kcore
/proc/kmsg, /proc/kmsg
/proc/loadavg, /proc/loadavg
/proc/locks, /proc/locks
/proc/mdstat, /proc/mdstat
/proc/meminfo, /proc/meminfo
/proc/misc, /proc/misc
/proc/modules, /proc/modules
/proc/mounts, /proc/mounts
/proc/mtrr, /proc/mtrr
/proc/net/ directory, /proc/net/
/proc/partitions, /proc/partitions
/proc/pci
viewing using lspci, /proc/pci
/proc/scsi/ directory, /proc/scsi/
/proc/self/ directory, /proc/self/
/proc/slabinfo, /proc/slabinfo
/proc/stat, /proc/stat
/proc/swaps, /proc/swaps
/proc/sys/ directory, /proc/sys/, Using the sysctl Command
see also sysctl
/proc/sys/dev/ directory, /proc/sys/dev/
/proc/sys/fs/ directory, /proc/sys/fs/
/proc/sys/kernel/ directory, /proc/sys/kernel/
/proc/sys/kernel/exec-shield, /proc/sys/kernel/
/proc/sys/kernel/sysrq
see system request key
/proc/sys/net/ directory, /proc/sys/net/
/proc/sys/vm/ directory, /proc/sys/vm/
/proc/sysrq-trigger, /proc/sysrq-trigger
/proc/sysvipc/ directory, /proc/sysvipc/
/proc/tty/ directory, /proc/tty/
/proc/uptime, /proc/uptime
/proc/version, /proc/version
additional resources, Additional Resources
installed documentation, Installed Documentation
useful websites, Useful Websites
changing files within, Changing Virtual Files, /proc/sys/, Using the sysctl Command
files within, top-level, Top-level Files within the proc File System
introduced, The proc File System
process directories, Process Directories
subdirectories within, Directories within /proc/
viewing files within, Viewing Virtual Files
Procmail, Mail Delivery Agents
additional resources, Additional Resources
configuration, Procmail Configuration
recipes, Procmail Recipes
delivering, Delivering vs. Non-Delivering Recipes
examples, Recipe Examples
flags, Flags
local lockfiles, Specifying a Local Lockfile
non-delivering, Delivering vs. Non-Delivering Recipes
SpamAssassin, Spam Filters
special actions, Special Conditions and Actions
special conditions, Special Conditions and Actions
programs
running at boot time, Running Additional Programs at Boot Time
Proxy
Apache configuration directive, Proxy
proxy server, ProxyRequests , Cache Directives
ProxyRequests
Apache configuration directive, ProxyRequests
public_html directories, UserDir

R

rc.local
modifying, Running Additional Programs at Boot Time
rc.serial, Running Additional Programs at Boot Time
see also setserial command
ReadmeName
Apache configuration directive, ReadmeName
Red Hat Enterprise Linux-specific file locations
/etc/sysconfig/, Special File Locations Under Red Hat Enterprise Linux
see also sysconfig directory
/var/lib/rpm/, Special File Locations Under Red Hat Enterprise Linux
/var/spool/up2date, Special File Locations Under Red Hat Enterprise Linux
Redirect
Apache configuration directive, Redirect
registering your subscription, Activate Your Subscription
root nameserver
see BIND
rpcclient program, rpcclient
rpcinfo, Troubleshooting NFS and portmap
runlevels
see init command
changing with GRUB, GRUB Interfaces
configuration of, Runlevel Utilities
see also services

S

Samba
see Samba
Abilities, Samba Features
Account Information Databases, Samba Account Information Databases
ldapsam, New Backends
ldapsam_compat, Backward Compatible Backends
mysqlsam, New Backends
Plain Text, Backward Compatible Backends
smbpasswd, Backward Compatible Backends
tdbsam, New Backends
xmlsam, New Backends
Additional Resources, Additional Resources
installed documentation, Installed Documentation
Red Hat resources, Red Hat Documentation
related books, Related Books
useful websites, Useful Websites
Backward Compatible Database Backends, Backward Compatible Backends
Browsing, Samba Network Browsing
CUPS Printing Support, Samba with CUPS Printing Support
CUPS smb.conf, Simple smb.conf Settings
daemon, Samba Daemons and Related Services
nmbd, The nmbd daemon
overview, Daemon Overview
smbd, The smbd daemon
winbindd, The winbindd daemon
Introduction, Introduction to Samba
Network Browsing, Samba Network Browsing
Domain Browsing, Domain Browsing
WINS, WINS (Windows Internetworking Name Server)
Workgroup Browsing, Workgroup Browsing
New Database Backends, New Backends
Programs, Samba Distribution Programs
findsmb, findsmb
make_smbcodepage, make_smbcodepage
make_unicodemap, make_unicodemap
net, net
nmblookup, nmblookup
pdbedit, pdbedit
rpcclient, rpcclient
smbcacls, smbcacls
smbclient, smbclient
smbcontrol, smbcontrol
smbgroupedit, smbgroupedit
smbmount, smbmount
smbpasswd, smbpasswd
smbspool, smbspool
smbstatus, smbstatus
smbtar, smbtar
testparm, testparm
testprns, testprns
wbinfo, wbinfo
Reference, Samba
Security Modes, Samba Security Modes
Active Directory Security Mode, Active Directory Security Mode (User-Level Security)
Domain Security Mode, Domain Security Mode (User-Level Security)
Server Security Mode, Server Security Mode (User-Level Security)
Share-Level Security, Share-Level Security
User Level Security, User-Level Security
Server Types, Samba Server Types and the smb.conf File
Domain Controller, Domain Controller
Domain Member, Domain Member Server
Stand Alone, Stand-alone Server
service
conditional restarting, Starting and Stopping Samba
reloading, Starting and Stopping Samba
restarting, Starting and Stopping Samba
starting, Starting and Stopping Samba
stopping, Starting and Stopping Samba
smb.conf, Samba Server Types and the smb.conf File
Active Directory Member Server example, Active Directory Domain Member Server
Anonymous Print Server example, Anonymous Print Server
Anonymous Read Only example, Anonymous Read-Only
Anonymous Read/Write example, Anonymous Read/Write
BDC using LDAP, Backup Domain Controller (BDC) using LDAP
NT4-style Domain Member example, Windows NT4-based Domain Member Server
PDC using Active Directory, Primary Domain Controller (PDC) with Active Directory
PDC using LDAP, Primary Domain Controller (PDC) using LDAP
PDC using tdbsam, Primary Domain Controller (PDC) using tdbsam
Secure File and Print Server example, Secure Read/Write File and Print Server
WINS, WINS (Windows Internetworking Name Server)
sbin directory, The /sbin/ Directory
ScriptAlias
Apache configuration directive, ScriptAlias
SCSI modules
see kernel modules
security
running Apache without, Virtual Hosts
SELinux, SELinux
additional resources, Additional Resources
documentation, Red Hat Documentation
installed documentation, Installed Documentation
websites, Useful Websites
introduction, Introduction to SELinux
related files, Files Related to SELinux
/etc/selinux/ Directory, The /etc/selinux/ Directory
/etc/sysconfig/selinux, The /etc/sysconfig/selinux Configuration File
/selinux/ pseudo-file system, The /selinux/ Pseudo-File System
configuration, SELinux Configuration Files
utilities, SELinux Utilities
Sendmail, Sendmail
additional resources, Additional Resources
aliases, Masquerading
common configuration changes, Common Sendmail Configuration Changes
default installation, The Default Sendmail Installation
LDAP and, Using Sendmail with LDAP
limitations, Purpose and Limitations
masquerading, Masquerading
purpose, Purpose and Limitations
spam, Stopping Spam
with UUCP, Common Sendmail Configuration Changes
serial ports
see setserial command
server side includes, Options , AddType
ServerAdmin
Apache configuration directive, ServerAdmin
ServerName
Apache configuration directive, ServerName
ServerRoot
Apache configuration directive, ServerRoot
ServerSignature
Apache configuration directive, ServerSignature
services
configuring with chkconfig, Runlevel Utilities
configuring with ntsysv, Runlevel Utilities
configuring with Services Configuration Tool, Runlevel Utilities
Services Configuration Tool, Runlevel Utilities
see also services
SetEnvIf
Apache configuration directive, SetEnvIf
setserial command
configuring, Running Additional Programs at Boot Time
shadow
see password
shadow passwords
overview of, Shadow Passwords
shutdown, Shutting Down
see also halt
slab pools
see /proc/slabinfo
slapadd command, OpenLDAP Daemons and Utilities
see also LDAP
slapcat command, OpenLDAP Daemons and Utilities
see also LDAP
slapd command, OpenLDAP Daemons and Utilities
see also LDAP
slapindex command, OpenLDAP Daemons and Utilities
see also LDAP
slappasswd command, OpenLDAP Daemons and Utilities
see also LDAP
slave nameserver
see BIND
slurpd command, OpenLDAP Daemons and Utilities
see also LDAP
smbcacls program, smbcacls
smbclient program, smbclient
smbcontrol program, smbcontrol
smbgroupedit program, smbgroupedit
smbmount program, smbmount
smbpasswd program, smbpasswd
smbspool program, smbspool
smbstatus program, smbstatus
smbtar program, smbtar
SpamAssassin
using with Procmail, Spam Filters
srv directory, The /srv/ Directory
SSH protocol, SSH Protocol
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
authentication, Authentication
configuration files, OpenSSH Configuration Files
connection sequence, Event Sequence of an SSH Connection
features of, Features of SSH
insecure protocols and, Requiring SSH for Remote Connections
layers of
channels, Channels
transport layer, Transport Layer
port forwarding, Port Forwarding
requiring for remote login, Requiring SSH for Remote Connections
security risks, Why Use SSH?
version 1, SSH Protocol Versions
version 2, SSH Protocol Versions
X11 forwarding, X11 Forwarding
SSL configuration, Configuration Directives for SSL
StartServers
Apache configuration directive, StartServers
startx
see X
stunnel, Securing Email Client Communications
subscription registration, Activate Your Subscription
SuexecUserGroup
Apache configuration directive, The suexec Module, SuexecUserGroup
sys directory, The /sys/ Directory
sysconfig directory, Special File Locations Under Red Hat Enterprise Linux
/etc/sysconfig/amd, /etc/sysconfig/amd
/etc/sysconfig/apm-scripts/ directory, Directories in the /etc/sysconfig/ Directory
/etc/sysconfig/apmd, /etc/sysconfig/apmd
/etc/sysconfig/arpwatch, /etc/sysconfig/arpwatch
/etc/sysconfig/authconfig, /etc/sysconfig/authconfig
/etc/sysconfig/autofs, /etc/sysconfig/autofs
/etc/sysconfig/cbq/ directory, Directories in the /etc/sysconfig/ Directory
/etc/sysconfig/clock, /etc/sysconfig/clock
/etc/sysconfig/desktop, /etc/sysconfig/desktop
/etc/sysconfig/devlabel, /etc/sysconfig/devlabel
/etc/sysconfig/dhcpd, /etc/sysconfig/dhcpd
/etc/sysconfig/exim, /etc/sysconfig/exim
/etc/sysconfig/firstboot, /etc/sysconfig/firstboot
/etc/sysconfig/gpm, /etc/sysconfig/gpm
/etc/sysconfig/harddisks, /etc/sysconfig/harddisks
/etc/sysconfig/hwconf, /etc/sysconfig/hwconf
/etc/sysconfig/init, /etc/sysconfig/init
/etc/sysconfig/ip6tables-config, /etc/sysconfig/ip6tables-config
/etc/sysconfig/iptables, Saving iptables Rules
/etc/sysconfig/iptables-config, /etc/sysconfig/iptables-config
/etc/sysconfig/irda, /etc/sysconfig/irda
/etc/sysconfig/keyboard, /etc/sysconfig/keyboard
/etc/sysconfig/kudzu, /etc/sysconfig/kudzu
/etc/sysconfig/mouse, /etc/sysconfig/mouse
/etc/sysconfig/named, /etc/sysconfig/named
/etc/sysconfig/netdump, /etc/sysconfig/netdump
/etc/sysconfig/network, /etc/sysconfig/network
/etc/sysconfig/network-scripts/ directory, Network Interfaces
/etc/sysconfig/ntpd, /etc/sysconfig/ntpd
/etc/sysconfig/pcmcia, /etc/sysconfig/pcmcia
/etc/sysconfig/radvd, /etc/sysconfig/radvd
/etc/sysconfig/rawdevices, /etc/sysconfig/rawdevices
/etc/sysconfig/rhn/ directory, Directories in the /etc/sysconfig/ Directory
/etc/sysconfig/samba, /etc/sysconfig/samba
/etc/sysconfig/selinux, /etc/sysconfig/selinux
/etc/sysconfig/sendmail, /etc/sysconfig/sendmail
/etc/sysconfig/spamassassin, /etc/sysconfig/spamassassin
/etc/sysconfig/squid, /etc/sysconfig/squid
/etc/sysconfig/system-config-securitylevel , /etc/sysconfig/system-config-securitylevel
/etc/sysconfig/system-config-users, /etc/sysconfig/system-config-users
/etc/sysconfig/system-logviewer, /etc/sysconfig/system-logviewer
/etc/sysconfig/tux, /etc/sysconfig/tux
/etc/sysconfig/vncservers, /etc/sysconfig/vncservers
/etc/sysconfig/xinetd, /etc/sysconfig/xinetd
additional information about, The sysconfig Directory
additional resources, Additional Resources
installed documentation, Installed Documentation
directories in, Directories in the /etc/sysconfig/ Directory
files found in, Files in the /etc/sysconfig/ Directory
sysconfig/ directory
/etc/sysconfig/network-scripts/ directory, Directories in the /etc/sysconfig/ Directory
see also network
/etc/sysconfig/networking/ directory, Directories in the /etc/sysconfig/ Directory
sysctl
configuring with /etc/sysctl.conf, Using the sysctl Command
controlling /proc/sys/, Using the sysctl Command
SysRq
see system request key
System Request Key
definition of, /proc/sys/
enabling, /proc/sys/
setting timing for, /proc/sys/kernel/
SysV init
see init command

T

TCP wrappers, xinetd
see also xinetd
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
advantages of, Advantages of TCP Wrappers
configuration files
/etc/hosts.allow, TCP Wrappers, TCP Wrappers Configuration Files
/etc/hosts.deny, TCP Wrappers, TCP Wrappers Configuration Files
access control option, Access Control
expansions, Expansions
formatting rules within, Formatting Access Rules
hosts access files, TCP Wrappers Configuration Files
log option, Logging
operators, Operators
option fields, Option Fields
patterns, Patterns
shell command option, Shell Commands
spawn option, Shell Commands
twist option, Shell Commands
wildcards, Wildcards
definition of, TCP Wrappers
introducing, TCP Wrappers and xinetd
testparm program, testparm
testprns program, testprns
ThreadsPerChild
Apache configuration directive, ThreadsPerChild
Timeout
Apache configuration directive, Timeout
TLB cache
see hugepages
troubleshooting
error log, ErrorLog
twm, Window Managers
see also X
TypesConfig
Apache configuration directive, TypesConfig

U

UseCanonicalName
Apache configuration directive, UseCanonicalName
User
Apache configuration directive, User
user private groups
see groups
and shared directories, Group Directories
UserDir
Apache configuration directive, UserDir
users
/etc/passwd, Standard Users
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
introducing, Users and Groups
personal HTML directories, UserDir
standard, Standard Users
tools for management of
User Manager, User and Group Management Tools
useradd, User and Group Management Tools
UID, Users and Groups
usr directory, The /usr/ Directory
usr/local/ directory, The /usr/local/ Directory

V

var directory, The /var/ Directory
var/lib/rpm/ directory, Special File Locations Under Red Hat Enterprise Linux
var/spool/up2date/ directory, Special File Locations Under Red Hat Enterprise Linux
virtual file system
see proc file system
virtual files
see proc file system
virtual hosts
configuring, Virtual Hosts
Listen command, Setting Up Virtual Hosts
name-based, Virtual Hosts
Options, Options
server side includes, AddType
VirtualHost
Apache configuration directive, VirtualHost
vsftpd, FTP Servers
see also FTP
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
condrestart, Starting and Stopping vsftpd
configuration file
/etc/vsftpd/vsftpd.conf, vsftpd Configuration Options
access controls, Log In Options and Access Controls
anonymous user options, Anonymous User Options
daemon options, Daemon Options
directory options, Directory Options
file transfer options, File Transfer Options
format of, vsftpd Configuration Options
local user options, Local User Options
logging options, Logging Options
login options, Log In Options and Access Controls
network options, Network Options
multihome configuration, Starting Multiple Copies of vsftpd
restarting, Starting and Stopping vsftpd
RPM
files installed by, Files Installed with vsftpd
security features, FTP Servers
starting, Starting and Stopping vsftpd
starting multiple copies of, Starting Multiple Copies of vsftpd
status, Starting and Stopping vsftpd
stopping, Starting and Stopping vsftpd

W

wbinfo program, wbinfo
webmaster
email address for, ServerAdmin
window managers
see X

X

X
/etc/X11/xorg.conf
boolean values for, The Structure
Device, Device
DRI, DRI
Files section, Files
InputDevice section, InputDevice
introducing, xorg.conf
Module section, Module
Monitor, Monitor
Screen, Screen
Section tag, The Structure
ServerFlags section, ServerFlags
ServerLayout section, ServerLayout
structure of, The Structure
additional resources, Additional Resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
configuration files
/etc/X11/ directory, X Server Configuration Files
/etc/X11/xorg.conf, xorg.conf
options within, X Server Configuration Files
server options, xorg.conf
desktop environments
GNOME, Desktop Environments
KDE, Desktop Environments
display managers
configuration of preferred, Runlevel 5
definition of, Runlevel 5
GNOME, Runlevel 5
KDE, Runlevel 5
prefdm script, Runlevel 5
xdm, Runlevel 5
fonts
core X font subsystem, Core X Font System
Fontconfig, Fontconfig
Fontconfig, adding fonts to, Adding Fonts to Fontconfig
FreeType, Fontconfig
introducing, Fonts
X Font Server, Core X Font System
X Render Extension, Fontconfig
xfs, Core X Font System
xfs configuration, xfs Configuration
xfs, adding fonts to, Adding Fonts to xfs
Xft, Fontconfig
introducing, The X Window System
runlevels
3, Runlevel 3
5, Runlevel 5
runlevels and, Runlevels and X
utilities
system-config-display, The X11R6.8 Release
window managers
kwin, Window Managers
metacity, Window Managers
mwm, Window Managers
twm, Window Managers
X clients, The X Window System, Desktop Environments and Window Managers
desktop environments, Desktop Environments
startx command, Runlevel 3
window managers, Window Managers
xinit command, Runlevel 3
X server, The X Window System
features of, The X11R6.8 Release
X Window System
see X
X.500
see LDAP
X.500 Lite
see LDAP
xinetd, xinetd
see also TCP wrappers
additional resources
installed documentation, Installed Documentation
related books, Related Books
useful websites, Useful Websites
configuration files, xinetd Configuration Files
/etc/xinetd.conf, The /etc/xinetd.conf File
/etc/xinetd.d/ directory, The /etc/xinetd.d/ Directory
access control options, Access Control Options
binding options, Binding and Redirection Options
logging options, The /etc/xinetd.conf File, The /etc/xinetd.d/ Directory, Logging Options
redirection options, Binding and Redirection Options
resource management options, Resource Management Options
DoS attacks and, Resource Management Options
introducing, TCP Wrappers and xinetd, xinetd
relationship with TCP wrappers, Access Control Options
xinit
see X
Xorg
see Xorg

Y

YABOOT, Boot Loaders and System Architecture
see also boot loaders

Z

z/IPL, Boot Loaders and System Architecture
see also boot loaders

 
 
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