D

daemon syslog-ng, 221 daemons, 203, 386 data, writing to hard drive, 142 data blocks, 140 data management, 341 Date and Time option, 57 dd command, 80, 135, 529 debugfs utility, 141 debuggers, 141, 144 debugresiserfs utility, 144 default directories, 32-38 default gateway IP address of, 238 removing, 251

setting with route command, 249-251 specifying, 20, 251 default mount points, 125 default permissions, setting, 116-117 default runlevel, 141, 191 DEFAULT scope, 622 default security policy, creating, 103-104 default-server.conf file, 423 deferred queue, 322 delayed allocation feature, 144 delegation of authority, 440 demilitarized zone (DMZ), 579 Denial of Service (DOS) attacks, 254 depmod command, 495 /dev directory, 34

device attributes, monitoring with ip tool, 245-246

device drivers, kernel modules and, 493 device files, 34, 80 device mounting, 36, 125-130 automated, 128-130 mount command, 125-127 unmounting, 128 device names, persistent, 498 device root, 181

DHCP (Dynamic Host Configuration Protocol), 461

DHCP and DNS Server setting, 13 DHCP process, 470 DHCP relay agent, 475 DHCP servers, 62 configuration advanced options, 473-477 manual, 469-473 from YaST, 462-469 failover setup, 475-477 integrating, with DNS, 473-475 IP addressing, 237 for PXE boot, 653-654 dhcpd.conf file, 470-477 DHCPDISCOVER packet, 461 DHCPOFFER packet, 461 digital certificates, 401

directories. See also specific directories copying contents from one to another, using tar, 133 default, 32-38 file management in, 38-40 OpenLDAP, 343-344 root, 33

space occupied by, 37 synchronizing, 136 working with, 76 directory agents (DAs), 621-622 Directory Server (LDAP) setting, 13 Directory service, 341-342. See also OpenLDAP Disk Controller Configuration Screen, 51 disk partitions. See partitions disk striping, 160 disk suballocation, 143 distinguished name (DN), 343 distributed parity, 160

Distributed Replicated Block Device (DRBD), 546-554

DMA access, enabling for IDE devices, 55

dmesg command, 215

DNS. See Domain Name System (DNS)

DNS database, adding MX records, 327

DNS domain name, 14-15, 63

DNS hierarchy connecting name servers in, 440-441 organization of, 439-441 DNS record types, 451 DNS resolver, configuration of, 251-253 DNS zones, 455-456, 474 dnssec-keygen command, 473 domain component object class, 342 domain controller, setting up Samba as, 302-304

domain environment, adding workstations to, 303

domain logins parameter, 303 domain master parameter, 303 Domain Name System (DNS) server, 62 configuring, 236-237

from configuration files, 453-457 with YaST, 442, 447-453 integrating, with DHCP server, 473-475 introduction to, 437-441 master and slave servers, 440 purpose of, 437 reversed DNS and, 441 securing zone transfers, 457-458 specifying, 19, 22 start options, 450-451 domain-0, 594

installation, 595-597 network interfaces, 607 domain-U, 594, 607 domains

DNS hierarchy and, 439-441 managing Xen, 602-606

DRBD. See Distributed Replicated Block Device

(DRBD) drift file, 396-397 DSL Connections option, 18 dump command, 130, 141 dumpe2fs utility, 140-141 Dynamic Host Configuration Protocol. See DHCP dynamic routing, 251

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