Beginning Fedora 2
S
Samba
configuration
files, 378, 379
SWAT, 380, 381, 382, 383, 384, 385, 386, 387
utilities, 378, 379
installation, 376
SWAT, 380, 381
overview, 376
shares
configuration, 383, 384
smbclient utility, 384, 385
smbmount utility, 385, 386
start/stop, 377, 378
SWAT
adding users, 383
initial use, 382, 383
share configuration, 383, 384
starting, 381
users
adding, 383
scheduling
kernel and, 521
tasks
processes, 240, 241
scp (secure copy), OpenSSH suite, 475, 476
screen
resolution
desktop, 41
screensaver
desktop configuration, 78
scripts
shell, 241
constructs, 242, 243, 244
loops , 245, 246
variables , 241, 242
search path , 54
searches
files, 58, 59
find command, 184, 185, 186
GNOME search tool, 186
locate command, 183, 184
log files, 496, 497
System Log and, 496
strings
grep command, 187
text, 187, 188, 189
xargs command, 187
security
alerts, 480
Bugtraq mailing list, 481
CERT, 481
Red Hat Errata Web site, 481
Apache Web server, 345
daemons, 440
data transfer, 409
encryption, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429
GPG (GNU Privacy Guard), 419, 420, 421, 422, 423, 424
GPG (GNU Privacy Guard), 307
hacking, 408
hardware, 410, 411
RAID, 410
hardware failure and, 408
Internet connections, 103
local security, 411, 412
logging out, 481
monitoring
system logs, 429, 430, 431, 432, 433
Mozilla settings, 111
network services, 440
enabling/disabling, 440, 441, 442, 443, 444, 445
monitoring, 446, 447
networks
firewalls, 452, 453, 454, 455, 456, 457
IP traffic, 448, 449, 450, 452
ssh and, 470, 471, 472, 473, 474, 475, 476
VPNs, 457, 458, 459, 460, 461, 462, 463, 464, 467, 469, 470
operator error and, 408
overview, 407
passwords, 412
cracking, 413, 414, 416, 417, 418
hashes, 412
selecting strong, 412, 413
physical threats, 409
planning
threats, 408, 409, 410
value of files, 408
probing (hacking), 408
root account and, 412
RPM and, 292
RPM packages, 306, 307
script errors, 412
SELinux. See SELinux
Service Configuration application, 443, 444
services, 440
system integrity, 434
Tripwire, 434, 435, 436, 437, 438, 439
threats
countering , 410, 411, 412, 413, 414, 416, 417, 418
trojans, 409
verification, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429
signed packages, 308
verification and, 481
viruses, 409
worms, 409
security directory, 491
Security Level Configuration, firewall configuration, 454
SELinux (Security Enhanced Linux), 476, 478
commands, 479, 480
online resources, 480
overview, 478, 479
policy rules, 480
sending e-mail
Perl, 552, 553, 554, 555, 556, 557
Sendmail
configuration, 390, 391, 392
testing, 393
client setup, 394
receiving messages, 396, 397
sending messages, 396
installation, 389
MDA, 394
POP3 service, 395
reasons to use, 389
starting, 392
Server configuration, 1
servers
configuration, 343
DHCP server
setup, 397, 398, 399, 400, 401, 402, 403, 405
file servers
setup, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387
FTP servers
setup, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370
key servers, 425
mail servers
setup, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397
print servers
setup, 370, 371, 372, 373, 374, 375
Web server
Apache configuration, 349, 351
setup, 343, 344, 345, 347, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360
site setup, Apache, 351, 352
Web servers
Apache, 345, 347, 348, 349
Service Configuration application, 443, 444
services, 82
networks
enabling/disabling, 440, 441, 442, 443, 444, 445
monitoring, 446, 447
run levels, 82
security and, 440
selecting, 82
xinetd, 445
setuid permissions, 179
SFTP (Secure FTP), 361
shadow password file, 412
shadow passwords
/etc/shadow and, 492
shared libraries
/etc/ld.so.conf and, 490
shares, Samba
configuration, 383, 384
shell, 54, 212
as command line interface, 211
Bash, 212
Bourne shell, 212
built-in programs, 214
C-shell, 212
commands, 214
absolute path, 215
administrative, 222, 223, 224
directories, 216, 217
files, 217
filesystem, 215, 216, 217, 218, 219
process management, 219, 220, 221
relative path, 215
working directory, 215
configuration, 236
prompt, 237
external programs, 214
Korn shell, 212
user account modification, 269
shell scripts, 241
conditional constructs, 242, 243, 244
loops, 245, 246
variables, 241, 242
shells
listing
/etc/shells and, 492
shortcut buttons
panel, 39
shortcuts, 224, 225, 226, 227, 228
applications, 45, 46
auto-completion, 227, 228
icons
size , 46
panel
adding to, 45
shut down, 222
shut down computer, 50, 51
shutdown command, 222
signatures
public keys, 427
verifying, 481
signed packages
verification, 308
site certificates
verifying, 481
size
files, 181
skel directory, 492
smbclient utility, 384, 385
smbmount utility, 385, 386
SMTP (Simple Mail Transfer Protocol), 389
sockets
SSH directories, 171
soft links, 173, 174, 175
software
installation needs, 2
sound
desktop configuration, 78
sound cards
information detection, 71
settings, 32
source code
access, 583, 584, 585, 586
applications
building, 515, 516, 517, 518
applications from, 513, 514, 516, 517, 518
checking out, CVS, 583, 584
development tools and
installing, 514
libraries
installing, 514
module building, 584, 585
patch creation, 585, 586
special keys, 224, 225, 226, 227, 228
split function, Perl, 550
Spreadsheet software icon, 45
spreadsheets. See OpenCalc
ssh
network security, 470, 471, 472, 473, 474, 475, 476
connection setup, 471, 472, 473, 474, 475
SSH (Secure Shell) directories
sockets, 171
SSL (Secure Sockets Layer), 141
Apache Web server
configuration, 354, 355
startup, 359, 360
OpenSSL software
Apache Web server installation and, 353, 354, 355, 356, 357, 358, 359, 360
startup
Apache
initial, 347, 348, 349
startup scripts
/etc/init.d and, 489
static addresses
Internet connection, LANs, 99
static IP addresses
DHCP server and, 402, 403
stream editor
text searches, 188
strict, 548
strings
searches
grep command, 187
strong password selection, 412, 413
su command, 222
root user and, 283, 284, 285
subject, e-mail
Perl, 556, 557
substitutions in command line, Perl, 564, 565, 566
sudo command
root user and, 286, 287
super block, partitions, 208
swap partitions, 207
SWAT
initial use, 382, 383
installation, 380, 381
shares
configuration, 383, 384
starting, 381
users
adding, 383
SWAT (Samba Web Administration Tool)
Samba configuration, 380, 381, 382, 383, 384, 385, 386, 387
switching identities, 222
symbolic links, 173, 174, 175
SYN flag, TCP packets, 452
Synaptic, 332, 334
syntax
command line, 228
operator, 235
& operator, 235
<#62> operator, 234
<#62><#62> operator, 234
<<> operator, 233
aliases, 231, 232
environment variables, 232
file globbing, 228, 229, 230
I/O redirection, 233
I/O streams, 233
quotes, 230, 231
system-defined variables, 232
user-defined variables, 232
xargs operator, 235
Perl, 554
sysadmin application, 590, 591
sysconfig directory, 492
syslogd daemon, 498
system accounts, 258
FTP server authentication testing, 368
system administration
GWCC (GNOME Workstation Command Center), 591, 592
RT (Request Tracker), 594
Webmin, 593, 594
system administration applications
future of Linux, 590, 591, 593, 594
system applications
emulators, 166, 167
file compression/archiving, 164, 165
file management, 163, 164
text editor, 163
system command
Perl, 563, 564
system configuration, 485
configuration files, 487
/etc/aliases, 487
/etc/bashrc, 487
/etc/crontab, 487
/etc/csh. cshrc , 487
/etc/default/useradd, 488
/etc/fstab, 488
/etc/ group , 488
/etc/grub.conf, 488
/etc/ hosts , 489
/etc/hosts.allow, 489
/etc/hosts.deny, 489
/etc/init.d, 489
/etc/inittab, 490
/etc/issue, 490
/etc/issue.net, 490
/etc/ld.so.conf, 490
/etc/logrotate.conf, 490
/etc/ modprobe .conf, 491
/etc/passwd, 491
/etc/rc, 491
/etc/resolv.conf, 491
/etc/security, 491
/etc/shadow, 492
/etc/shells, 492
/etc/skel, 492
/etc/sysconf, 492
/etc/sysctl.conf, 492
/etc/syslog.conf, 493
/etc/X11/xorg.conf, 487
/etc/xinetd.conf, 493
DNS server, locating, 486
system integrity, 434
Tripwire, 434, 435, 436, 437, 438
database update, 439
running automatically, 438
system load, Perl, 558, 559, 560, 561, 562, 563, 564, 565, 566, 568, 569
system logs
security monitoring, 429
/var/log directory, 430
logwatch tool, 430, 431, 432, 433
System Logs application, 496
system-defined variables
command line syntax, 232
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