Book Home

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Index: I

I flag (Linux routing table): 2.4. The Routing Table

IANA (Internet Assigned Numbers Authority)

address requests: 4.2.1.1. Obtaining an official network address
protocol and port numbers: 2.6. Protocols, Ports, and Sockets

ICANN (Internet Corporation for Assigned Names and Numbers)

domain name registrars: 3.3.2. Creating Domains and Subdomains
domain names, registering: 4.4.1. Obtaining a Domain Name

ICMP (Internet Control Message Protocol): 1.5.2. Internet Control Message Protocol

Echo Message: 1.5.2. Internet Control Message Protocol

Redirect Message: 1.5.2. Internet Control Message Protocol

Source Quench Message: 1.5.2. Internet Control Message Protocol

1.5.2. Internet Control Message Protocol

ICMP parameter problem header: Appendix g.3. ICMP Parameter Problem Message Header

ICMP Redirect: 7.3.1. Adding Static Routes

icmp statement (gated): B.8.8. The icmp Statement

ICMP Unreachable Port message: 13.5.1. Tracing Routes

Identification field: 1.5.1.3. Fragmenting datagrams

idle option (pppd): A.2. The PPP Daemon

IDRP (InterDomain Routing Protocol): 7.5.2. Border Gateway Protocol

Ierrs field (netstat command): 6.1.1. The Interface Name

IETF (Internet Engineering Task Force)

IPv6: 2.2.4. CIDR Blocks and Route Aggregation
protocol development: 1.1.2. Protocol Standards

if command (dip): A.1.1. The dip Script File

Iface field (Linux routing table): 2.4. The Routing Table

ifcfg-eth0 file (Linux): 6.1.4. Assigning a Subnet Mask

ifcfg file (Linux): 6.1.3. Assigning an Address

ifconfig command: 3.6.1. Reverse Address Resolution Protocol

5.1.1. Using Dynamically Loadable Modules

arguments: 6.1. The ifconfig Command

ARP, enabling and disabling: 6.1.6.2. ARP

broadcast addresses, assigning: 6.1.5. Setting the Broadcast Address

diagnostic troubleshooting: 13.2. Diagnostic Tools

Ethernet promiscuous mode, enabling and disabling: 6.1.6.3. Promiscuous mode

IP addresses, assigning: 6.1.3. Assigning an Address

MTU, changing: 6.1.6.5. Maximum transmission unit

network interfaces

checking: 6.1.2. Checking the Interface with ifconfig
determining available: 6.1.1. The Interface Name
enabling and disabling: 6.1.6.1. Enabling and disabling the interface

overview: 6.1. The ifconfig Command

routing metric, changing: 6.1.6.4. Metric

Solaris

configuring PPP: 6.3.6. Solaris PPP
Ethernet: 6.1. The ifconfig Command

startup files: 6.1.6.7. Putting ifconfig in the startup scripts

subnet masks, assigning: 6.1.4. Assigning a Subnet Mask

troubleshooting with: 13.4.1. Troubleshooting with the ifconfig Command

iflist (gated): B.4. Trace Statements

ignore parameter (gated): B.8.9. The routerdiscovery Statement

IHL (Internet Header Length) field: 1.5.1.1. The datagram

image (MIME data content type): 3.4.4. Multipurpose Internet Mail Extensions

IMAP (Internet Message Access Protocol): 3.4.3. Internet Message Access Protocol

commands: 3.4.3. Internet Message Access Protocol
servers, configuring: 9.7.2. IMAP Server

implicit (sendmail K command value): E.4.5. The sendmail K Command

import keyword (dbmmanage command): 11.4.4.2. Improved user authentication

import statement (gated): B.10. Control Statements

B.10.1. The import Statement

importdefault parameter (gated): B.8.5. The egp Statement

in-addr.arpa domains: 4.2.1.2. Obtaining an IN-ADDR.ARPA domain

IN value (DNS resource records): 8.3.2. Standard Resource Records

inactivity_timeout statement (Solaris PPP): 6.3.6. Solaris PPP

inc command (dip): A.1.1. The dip Script File

include files, gated: B.3. Directive Statements

Includes (Options directive setting): 11.4.2. Controlling Server Options

IncludesNOEXEC (Options directive setting): 11.4.2. Controlling Server Options

indefinite tokens (sendmail pattern matching): 10.6.1. Pattern Matching

indelay parameter (gated): B.8.4. The bgp Statement

indexes, directory (Apache): 11.3.5. Creating a Fancy Index

Indexes (Options directive setting): 11.4.2. Controlling Server Options

index=file option (share command): 9.1.2.1. The share command

index.html file (Apache): 11.2.1. Configuring Apache on Solaris

IndexIgnore directive (Apache): 11.3.5. Creating a Fancy Index

IndexOptions directive (httpd.conf file): 11.3.5. Creating a Fancy Index

indirect map configuration file (automounter): 9.1.4. NFS Automounter

ineligible parameter (gated): B.8.9. The routerdiscovery Statement

inet6 option (resolv.conf file): 8.2.1. The Resolver Configuration File

inet6 parameter (gated): B.8.3. The isis Statement

inetd: 5.3. The Internet Daemon

inetd.conf file

fields: 5.3. The Internet Daemon
NFS daemons, starting: 9.1.1. NFS Daemons

info domain: 3.3.1. The Domain Hierarchy

info parameter (gated)

icmp statement: B.8.8. The icmp Statement
kernel statement: B.8.10. The kernel Statement

information disclosure (security risk): 12.1.1. Assessing the Threat

informational RFCs: 1.1.2. Protocol Standards

init command (dip): A.1.1. The dip Script File

init script option (pppd): A.2. The PPP Daemon

init.d/httpd script (Apache): 11.1.1. Using the Red Hat Package Manager

Initial Sequence Number (ISN): 1.6.2. Transmission Control Protocol

inittab file, runlevels and: 5.2.1.1. Understanding /etc/inittab

INPUT_MAIL_FILTER macro (sendmail): E.3. m4 sendmail Macros

insmod command (Linux): 5.1.1. Using Dynamically Loadable Modules

installation

Apache, overview: 11.1. Installing Apache Software
PPP: 6.3. Installing PPP
sendmail: E.1. Compiling sendmail

int domain: 3.3.1. The Domain Hierarchy

InterDomain Routing Protocol (IDRP): 7.5.2. Border Gateway Protocol

interface argument (ifconfig command): 6.1. The ifconfig Command

interface-interval option (named): C.2.5. The options Statement

interface parameter

gated isis statement: B.8.3. The isis Statement
gated kernel statement: B.8.10. The kernel Statement
gated ospf statement: B.8.1. The ospf Statement
gated rip statement: B.8.2. The rip Statement
gated static statements: B.9. static Statements

interfaces

configuring

checking: 6.1.2. Checking the Interface with ifconfig
ifconfig command: 6.1. The ifconfig Command
troubleshooting: 13.4.1. Troubleshooting with the ifconfig Command

connectors (OSI Physical Layer): 1.2. A Data Communications Model

determining avaliable: 6.1.1. The Interface Name

enabling and disabling, ifconfig command: 6.1.6.1. Enabling and disabling the interface

gated support: B.6. Interface Statements

hardware, identifying installed: 5.1.5.3. The device statement

serial lines, overview: 6.2. TCP/IP Over a Serial Line

interior routing protocols

gated sample configuration: 7.7.1.2. Interior gateway configurations
OSPF: 7.4.3. Open Shortest Path First
overview: 7.4. Interior Routing Protocols
RIP: 7.4.1. Routing Information Protocol
routed command: 7.4.1.1. Running RIP with routed

Intermediate System to Intermediate System (see IS-IS)

internal classes, sendmail: E.4.2. sendmail Classes

Internet

architecture, routing: 2.3. Internet Routing Architecture

growth of: 1.1. TCP/IP and the Internet

effect on addressing schemes: 2.2.4. CIDR Blocks and Route Aggregation

history of: 1.1. TCP/IP and the Internet

tier-one providers: 1.1. TCP/IP and the Internet

Internet Assigned Numbers Authority (see IANA)

Internet Control Message Protocol (see ICMP)

Internet Control Protocol (IPCP): 6.2.1. The Serial Protocols

Internet Corporation for Assigned Names and Numbers (see ICANN)

Internet end user (organizational type): 4.2.1.1. Obtaining an official network address

Internet Engineering Task Force (see IETF)

Internet Header Length (IHL) field: 1.5.1.1. The datagram

Internet Layer: 1.5. Internet Layer

ICMP: 1.5.2. Internet Control Message Protocol

IP datagrams: 1.5.1. Internet Protocol

forwarding: 1.5.1.4. Passing datagrams to the transport layer
fragmenting: 1.5.1.3. Fragmenting datagrams
routing: 1.5.1.2. Routing datagrams

Internet Protocol (see IP)

Internet Routing Registry (see IRR)

Internet Service Providers (see ISPs)

Internet standards (RFCs): 1.1.2. Protocol Standards

intr option (vfstab file): 9.1.3.2. The vfstab and fstab files

intranets: 4.1. Connected and Non-Connected Networks

defined: 1.1. TCP/IP and the Internet

intruder detection: 12.4.2. Looking for Trouble

IP addresses

assigning

contiguous blocks of: 2.2.4. CIDR Blocks and Route Aggregation

ifconfig command: 6.1. The ifconfig Command

6.1.3. Assigning an Address

bit masks: 2.2.3. The Natural Mask

broadcast: 2.2. The IP Address

assigning: 6.1.5. Setting the Broadcast Address

CIDR: 2.2.4. CIDR Blocks and Route Aggregation

classes: 2.2.3. The Natural Mask

data delivery: 2.1. Addressing, Routing, and Multiplexing

datagrams: 2.2. The IP Address

default masks, identifying: 2.2.3. The Natural Mask

dotted decimal notation: 2.2. The IP Address

expected utilization rate: 4.2.1.1. Obtaining an official network address

hostnames: 3.1. Names and Addresses

locating with dig: 13.6.4. dig: An Alternative to nslookup

interpreting: 2.2.3. The Natural Mask

IPv6: 2.2.5. IPv6

loopback, localhost: 3.2. The Host Table

multicast: 2.2. The IP Address

natural mask: 2.2.3. The Natural Mask

network growth, effect on addressing schemes: 2.2.4. CIDR Blocks and Route Aggregation

nslookup and: 8.4. Using nslookup

obtaining: 2.2.1. Address Structure

4.2.1. Obtaining an IP Address

official, assessing need for: 4.2.1.1. Obtaining an official network address

pppd command and: 6.3.1. The PPP Daemon

registries, obtaining addresses from: 4.2.1.1. Obtaining an official network address

resolution: 2.5. Address Resolution

reverse domains: 4.2.1.2. Obtaining an IN-ADDR.ARPA domain

routing tables, reducing size of: 2.2.4. CIDR Blocks and Route Aggregation

share command and: 9.1.2.1. The share command

shortage of: 2.2.5. IPv6

structure: 2.2.1. Address Structure

subnet masks

assigning: 6.1.4. Assigning a Subnet Mask
creating: 2.2.2. Subnets
RFCs: 2.2.2. Subnets

subnets: 2.2.2. Subnets

translation

forward-mapping zone files: 8.3.7. The Forward-Mapping Zone File
overview: 4.2.1. Obtaining an IP Address
reverse zone files: 8.3.6. The Reverse Zone File
troubleshooting: 13.4.2. Troubleshooting with the arp Command

unicast: 2.2. The IP Address

uniqueness of: 4.2.1. Obtaining an IP Address

IP datagram header: Appendix g.1. IP Datagram Header

IP (Internet Protocol)

datagrams: 1.5.1.1. The datagram
forwarding datagrams: 1.5.1.4. Passing datagrams to the transport layer
fragmenting datagrams: 1.5.1.3. Fragmenting datagrams
overview: 1.5.1. Internet Protocol
RFC 791: 3.1. Names and Addresses
routing datagrams: 1.5.1.2. Routing datagrams
versions: 1.5. Internet Layer

ip module, ip_forwarding variable: 5.1.1. Using Dynamically Loadable Modules

IPADDR (Linux configuration value): 6.1.3. Assigning an Address

ipcp-accept-local option (pppd): A.2. The PPP Daemon

ipcp-accept-remote option (pppd): A.2. The PPP Daemon

IPCP (Internet Control Protocol): 6.2.1. The Serial Protocols

ipcp-max-configure option (pppd): A.2. The PPP Daemon

ipcp-max-failure option (pppd): A.2. The PPP Daemon

ipcp-max-terminate option (pppd): A.2. The PPP Daemon

ipcp-restart option (pppd): A.2. The PPP Daemon

ip_forwarding variable (ip module), configuring: 5.1.1. Using Dynamically Loadable Modules

Ipkts field (netstat command): 6.1.1. The Interface Name

ipparam option (pppd): A.2. The PPP Daemon

iptables command

filtering routers: 12.7.2.1. Defining iptables filter rules
samples: 12.7.2.2. Sample iptables commands

IPv6: 2.2.4. CIDR Blocks and Route Aggregation

2.2.5. IPv6
demand for: 2.2.5. IPv6
efficiency of: 2.2.5. IPv6

IPv4 flag (ifconfig command): 6.1.2. Checking the Interface with ifconfig

ipv6 option (pppd): A.2. The PPP Daemon

ipv6cp-max-configure option (pppd): A.2. The PPP Daemon

ipv6cp-max-failure option (pppd): A.2. The PPP Daemon

ipv6cp-max-terminate option (pppd): A.2. The PPP Daemon

ipv6cp-restart option (pppd): A.2. The PPP Daemon

ipv6cp-use-ipaddr option (pppd): A.2. The PPP Daemon

ipv6cp-use-persistent option (pppd): A.2. The PPP Daemon

IRR (Internet Routing Registry): 2.3. Internet Routing Architecture

4.3.2. Registering in a Routing Database

IRs (Internet Registries), address requests: 4.2.1.1. Obtaining an official network address

IS-IS (Intermediate System to Intermediate System), overview: 7.4. Interior Routing Protocols

isis statement (gated): B.8.3. The isis Statement

ISN (Initial Sequence Number): 1.6.2. Transmission Control Protocol

ISPs (Internet Service Providers): 1.1. TCP/IP and the Internet

addresses, assigning: 2.2.1. Address Structure
as organizational type: 4.2.1.1. Obtaining an official network address

ISS (automated system monitoring): 12.4.3. Automated Monitoring

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