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] I/O addresses 2nd PIO (programmed I/O) modes standard ibiblio.org (Linux printing system) 2nd ICMP (Internet Control Message Protocol) 2nd IDE (integrated device electronics) 2nd CD burners disk device files disk drives, naming SCSI versus IDS (intrusion detection system) tools Snort Tripwire IDs, SCSI Linux SCSI device files if command ifconfig utility 2nd 3rd checking dial-up network connections examples of use in production environment ifconfig command listing network interface parameters network troubleshooting other common uses parameters in /etc/network/interfaces verifying hardware and network software virtual interfaces, configuring IFS variable, security risks ifup command NICs, testing image directive image file (bootable), for custom kernel images (ISO) images, kernel initrd 2nd customizing in-addr.arpa filename incremental backup Industry Standard Architecture (ISA) inetd 2nd configuring inetd.conf file required fields reconfiguration security risks, minimizing services controlled by, TCP wrappers for starting and stopping services SWAT, using with TCP wrappers, using tcpd info pages info utility document-viewing commands navigation commands texinfo, viewing inheritance of login environment one-way, in shell environment init command 2nd 3rd failure of bypassing init troubleshooting problems init daemon, failure to run init.d directory 2nd 3rd 4th links Initial Round Trip Time (IRRT) initialization script, turning on quotas initialization scripts, system 2nd failure of initrd boot process initrd image 2nd customizing rescue disk inittab file INN (InterNet News service) configuring stopping/restarting after changes customizing newsgroups downstream and upstream clients, configuring files and directories used by innd installing monitoring resource usage with innwatch newsgroups, monitoring inodes 2nd file mode preventing shortages of Input Field Separators (IFS) variable input redirection operators .inputrc file 2nd INPUTRC variable insmod command 2nd 3rd 4th Red Hat Linux install directive install directive, modules.conf %install macro install/upgrade mode, rpm installation, Linux boot manager 2nd 3rd exercises hard disk layout, designing 2nd 3rd programs from source 2nd 3rd review questions shared libraries, managing 2nd 3rd installed packages, security checks using rpm instruction messages (Majordomo) interactive signals interfaces file internal modems Internet Control Message Protocol (ICMP) Internet Printing Protocol (IPP) Internet Systems Consortium (ISC) interpreter, Perl interpreters, specifying interrupt signal (SIGINT) IO::File module IP (Internet Protocol) 2nd 3rd addresses allocation with DHCP IP addresses Apache virtual hosts and assignment by DHCP fixed addresses random assignment assignment with DHCP dynamically assigned with DHCP, leases hosts on network, sudden changes in ifconfig utility and private networks routing on Internet resolving domain names to resolving names to, using DNS reverse DNS on subnet masks and translating domain name into translation of Windows machine names to ip_forward module ipchains command 2nd 3rd chains and traffic flow example setup reviewing settings in network troubleshooting rule specifications saving and reloading rule sets syntax and options ipmasqadm command ipppd iptables command 2nd 3rd chains and traffic flow example netfilter configuration important points reviewing settings in network troubleshooting rule targets saving and reloading rule sets syntax and options ipv4 (kernel) subdirectories IPv6 lookups, turning off IRQs (interrupts) 2nd modems IRRT (Initial Roud Trip Time) ISA (Industry Standard Architecture) isapnp command ISC (Internet Systems Consortium) ISDN dial-up connections Point-to-Point Protocol Daemon, ipppd PPP over isdnctrl command 2nd ISO9660 filesystems 2nd burning CD-ROMs creating images mkisofs command issue file 2nd iwconfig command |