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halting the system
handles, file
handshaking
hangup signal, protecting background processes from
hard disks
     adding to volume group
     getting information about with hdparm
     IDE device files
     initializing for LVM
     listing to find physical volumes
     partitioning 2nd 3rd
         guidelines for Linux system
         swap space
         system considerations
     removing from volume group
     SCSI device files
hard limit (disk quotas)
hard links 2nd 3rd
     finding
hardening operating system for Sendmail bastion host
hardware
     adding
     Exam 101
         BIOS settings
         communications devices
         expansion interface cards
         modems and sound cards
         review questions and exercises
         SCSI devices
         USB devices
     Exam 201 review questions and exercises
     IDE CD burners, supporting
     kernel support
     LVM (Logical Volume Manager)
     PCMCIA devices, configuring
     RAID, configuring
     runtime kernel configuration
     software and kernel configuration
         hdparm command
     troubleshooting 2nd
         kernel and /etc/ modules, changes to
         NIC problems
         physical connection issues
     video hardware for XFree86
Hardware Compatibility List (HCL)
Harvest project
HCL (Hardware Compatibility List
hdparm command
head command 2nd
hierarchy
     filesystem objects
     kernel module directories
hints for finding root name servers
history expansion (commands)
history substitution (commands)
HISTSIZE shell variable
/home directory 2nd 3rd
     new accounts, configuration
     setting for new accounts
     tilde (~) shortcut 2nd
HOME environment variable
/home partition
     guidelines for
     size of
horizontal sync frequency (monitors)
host addresses
host command 2nd 3rd 4th
host controller drivers (USB)
host controllers
host-based access control, X Window System
host.conf file 2nd
hostname command
hostname file
hosts
     authentication based on
     IDS tools
     security 2nd
         announcements about
         inetd
         logging and superuser mail
         shadow passwords
     virtual
hosts file
     name-to-address mapping
     NIS servers
hosts.allow file 2nd 3rd
     access checks, services protected by TCP wrappers
     NFS server security
     rules, configuring
     specifying services
     xinetd and access control
hosts.deny file 2nd 3rd
     access checks, services protected by TCP wrappers
     denying all services from all machines
     NFS server security
     specifying services
     xinetd and access control
hotplug devices
     PCMCIA
     USB
HOWTOs 2nd
htpasswd utility 2nd
     creating Apache authentication file
httpd
     command-line options
     testing
     verifying existence of
     verifying listening on network port
httpd.conf file 2nd
     Directory container, adding
     identifying PHP scripts
     performance-tuning options in global section
     SSL connections
hubs, failure of