Red Hat Enterprise Linux 4: Reference Guide
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CentOS 6 Essentials
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.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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