Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] dash interpreter data categories 2nd datagram delivery service (IP) dates and times attacks using malevolent date programs hardware clock, configuring hours, specifying in cron facility maintaining system time NTP (Network Time Protocol) synchronizing time on all systems times for crontab command execution db (database) entries, named files dd utility burning copy of data CD creating boot floppy facilitating I/O with block devices DDoS (distributed denial of service attacks), using echo broadcasts .deb file extension debhelper programs Debian-based systems building packages signing packages configuring as DHCP client creating boot floppy initrd and /linuxrc keeping Debian up to date mkinitrd command modifying packages NIS master server package management 2nd 3rd alien command apt-get command dpkg command dselect command pcmcia-cs module pcnetconfig command pppconfig tool runlevels, customizing update-rc.d command security information system initialization techniques wireless NIC card debugfs command 2nd debuild command default gateway default runlevel default shell .deny files dependencies kernel modules Makefile Perl packages shared libraries depfile directive, modules.conf depmod command 2nd desktop environments 2nd /dev directory 2nd 3rd /null development kernels device drivers, activitation device files 2nd backups to tape and other removable media device field, /etc/fstab file IDE SCSI serial port tape drives nonrewinding device settings, common 2nd devices network configuration files failed review questions and exercises df command 2nd DH_ variables dhclient DHCP (Dynamic Host Configuration Protocol) 2nd 3rd clients Debian, configuring as client dhclient pump Red Hat, configuring as client configuring system for dhcpd 2nd Ethernet (eth0) interface ifconfig utility and leases relay releasing lease before removing PCMCIA card server daemon, launching server, setting up bootp support DHCP options dhcpd fixed IP assignment dhcpd random IP assignment dhcpd.leases subnets and relays dial-up connections checking configuration files configuration tools connecting with a modem IP routing configuration ISDN multi-homed systems poff command pon and poff scripts protocols wvdial command wvdial.conf file (examples) wvdialconf command examples diff command differential backup dig command 2nd 3rd digital devices, synchronous connections directives awk programs slapd.conf file directories backup recommended for creating current working directory hierarchy removing root filesystem RPM packages workgroup directory, setting up disaster planning discard service disk blocks disk drives filesystems, creating hard disk devices interfaces IDE (Integrated Device Electronics) SCSI 2nd partitioning 2nd 3rd fdisk command guidelines for Linux system swap partitions swap space system considerations partitions supported under Linux disk quotas 2nd 3rd enabling quota commands quota limits disk space free, monitoring with df command monitoring usage with du command disks external, detecting fragmentation DISPLAY environment variable 2nd display managers 2nd 3rd xdm, configuring DMA (Direct Memory Access) 2nd dmesg command troubleshooting hardware DNS (Domain Name System) 2nd 3rd BIND v4 vs. v8 configuration files BIND, basic configuration named.conf file primary DNS server secondary and tertiary DNS server domain name registration errors Exam 202 review module supporting requests in Perl name resolution with Net::DNS Perl module problems with, route command and query utiilities resolver securing DNS server dedicated servers recursive queries restricting zone transfers running BIND in chroot jail/reduced privileges transaction signatures (TSIGs) servers, querying commands smart host-based mail delivery vs. SMTP delivery based on system hanging during DNS lookups zones, creating and maintaining forward zones reverse DNS files tools dnsdomainname command documentation 2nd Apache mod_rewrite module mod_status module highlighter's index local system info pages information in /usr/share/doc manpages text files and paging notifying users on system-related issues resources on the Internet LDP mailing lists Usenet newsgroups web sites review questions and exercises RPM package build Squid tutorials domain controller for Windows PCs, Samba server as domain names NIS 2nd resolving to IP records domainname command domaintable file (Sendmail) DoS (denial of service) attacks DNS cache poisioning dotted quad decimal notation downstream clients (INN) dpkg command 2nd 3rd dpkg-buildpackage command DS directive dselect command 2nd DSOs (Dynamically Shared Objects) checking compilation of loading at Apache startup du command 2nd dump frequency (etc/fstab) dumpe2fs command 2nd dynamic routing dynamically linked programs 2nd |