T


tabletype options for iptables command, 698

tail command, 22

tape backups, 37

tar command, 38

tar files, 396

tarballs, 23

TCP SYN attacks, 383, 700

TCP/IP networking, 38–43, 59

configuring name resolution, 42–43

defined, 815

defining network with IP addresses, 40–41

IP numbers and address classes, 39

IPv6 addressing, 39–40

network card configuration for, 87, 88

overview, 38–39

Samba and, 519–520

tools and commands for, 41–42

typical port numbers for, 615–616

tcp_wrappers, 693–697

configuring, 696–697

operators for, 696

securing users and host with, 694–696

Telnet

controlling resource access with tcp_wrappers, 695, 696–697

defined, 816

enabling with xinetd, 620

using Kerberos-based, 624

vulnerabilities of, 624

xinetd and, 614

testing. See also self test and answers

changes to /etc/samba/smb .conf, 542

disk quotas, 297

kickstart configuration, 248

mail system, 600–601, 602–603

RPM packages, 225

troubleshooting scenarios, 731

testparm utility for Samba, 542

text editors, 8–11. See also vi

about, 8

availability during exam, 11

configuring Samba with shares, 543–544

emacs, 803

vi, 8–10

text-based tools

accessing URLs with text browsers, 50–51

configuring Samba with shares in text editor, 543–544

controlling services with, 168

editing Apache configuration files with, 475

GUI-text editors availability during exam and, 11

learning command line configurations for NFS, 506

modifying user accounts with, 282

running First Boot process with, 126

Samba configuration in text editor, 517

setting up network interface with, 333

timesavings of, 281

third-party repositories

about, 54, 237

adding to system, 242

resynchronizing headers of, 241

tilde (~), 20

time

configuring timezones, 108

setting system date and, 123, 124

time synchronization. See NTP

timesavings

configuring system during installation "dead time", 120

editing Apache configuration files from command line, 475

installing via remote NFS server, 92–95

redoing installation rather than fixing, 126

selecting correct desktop environment, 112

setting Samba global configurations from command line, 537

testing mail system from command line, 600–601

time required for LVM partitions, 103

timing for DNS servers, 573–574

/tmp directory configuration files, 129

tmpwatch command, 816

tools. See system administration tools; text-based tools; and specific tools

Translation options (SELinux Management Tool), 715

troubleshooting, 728–766

about, 728

Apache errors, 472–473

boot failures, 144

boot loader, 749–750

booting into different runlevels, 733–735

cautions about removing RPM packages, 225

checking partitions with dumpe2fs, 754

configuration files, 162, 331

corrupted files, 755–756

desktop environments, 746

DHCP clients, 632

difficulties recognizing second network adapters, 336

DNS configuration files, 574

e2label command for filesystem, 753–754, 755

errors in GRUB configuration file, 152–155

exam objectives for, 728, 729

fdisk and parted utilities for, 752–753

filesystems, 747, 751–755

fsck command for, 754–755

graphics hardware during boot USB or CD/DVD installation, 91

GUI-text editors for exam, 11

hostname resolution, 744

identifying problems during, 728–733

inspecting system logs for problems, 364

installation, 127–129

IP addresses and NAT, 706

lab questions and answers on, 762–763, 765–766

linux rescue environment for, 728, 735–742

logical volumes, 756–759

module errors in boot loader, 750–751

network problems, 742–743

network service issues, 756, 759

new partitions, 747–748

NFS client hangs when shutting down, 503–504, 507–508

partitioning mistakes using parted, 191

remote X applications, 676–677

RHCT exam requirements for, 330, 742–748

scenarios and solutions for, 731–732

self test and answers, 761–762, 764–765

sendmail, 596–597

skills required for RHCE, 748–759

summarized, 759

swap partitions, 747

two-minute drill, 760

unable to open SELinux

Management Tool, 83

USB ports or PCI card from BIOS menus, 5

using command line or text-based tools for exam, 282, 748

yum command problems, 241

X clients and servers, 669

X Font Server, 674

X Window System, 666, 745

Troubleshooting and System Maintenance section

exam objectives for, 728, 729, 759

Sample Exam 1, 768–776

Sample Exam 2, 784–793

two-minute drills

X Window System, 683

Apache and Squid, 485

booting, 173–174

DNS, 578

filesystem administration, 211

hardware compatibility and installation, 131–132

kernels, 431–432

network file sharing services, 546–547

other networking services, 638–639

package management, 261–262

prerequisite skills, 57–60

security, 718–719

system administration tools, 365–366

troubleshooting, 760

user administration, 319–320



RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302)
Linux Patch Management: Keeping Linux Systems Up To Date
ISBN: 0132366754
EAN: 2147483647
Year: 2004
Pages: 227
Authors: Michael Jang

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