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Index: I

• I flag (Linux routing table): The Routing Table
• IANA (Internet Assigned Numbers Authority)
• • address requests: Obtaining an official network address
  • protocol and port numbers: Protocols, Ports, and Sockets
• ICANN (Internet Corporation for Assigned Names and Numbers)
• • domain name registrars: Creating Domains and Subdomains
  • domain names, registering: Obtaining a Domain Name
• ICMP (Internet Control Message Protocol): Internet Control Message Protocol
• • Echo Message: Internet Control Message Protocol
  • Redirect Message: Internet Control Message Protocol
  • Source Quench Message: Internet Control Message Protocol
  • • Internet Control Message Protocol
• ICMP parameter problem header: Appendix g.3. ICMP Parameter Problem Message Header
• ICMP Redirect: Adding Static Routes
• icmp statement (gated): The icmp Statement
• ICMP Unreachable Port message: Tracing Routes
• Identification field: Fragmenting datagrams
• idle option (pppd): The PPP Daemon
• IDRP (InterDomain Routing Protocol): Border Gateway Protocol
• Ierrs field (netstat command): The Interface Name
• IETF (Internet Engineering Task Force)
• • IPv6: CIDR Blocks and Route Aggregation
  • protocol development: Protocol Standards
• if command (dip): The dip Script File
• Iface field (Linux routing table): The Routing Table
• ifcfg-eth0 file (Linux): Assigning a Subnet Mask
• ifcfg file (Linux): Assigning an Address
• ifconfig command: Reverse Address Resolution Protocol
• • Using Dynamically Loadable Modules
  • arguments: The ifconfig Command
  • ARP, enabling and disabling: ARP
  • broadcast addresses, assigning: Setting the Broadcast Address
  • diagnostic troubleshooting: Diagnostic Tools
  • Ethernet promiscuous mode, enabling and disabling: Promiscuous mode
  • IP addresses, assigning: Assigning an Address
  • MTU, changing: Maximum transmission unit
  • network interfaces
  • • checking: Checking the Interface with ifconfig
    • determining available: The Interface Name
    • enabling and disabling: Enabling and disabling the interface
  • overview: The ifconfig Command
  • routing metric, changing: Metric
  • Solaris
  • • configuring PPP: Solaris PPP
    • Ethernet: The ifconfig Command
  • startup files: Putting ifconfig in the startup scripts
  • subnet masks, assigning: Assigning a Subnet Mask
  • troubleshooting with: Troubleshooting with the ifconfig Command
• iflist (gated): Trace Statements
• ignore parameter (gated): The routerdiscovery Statement
• IHL (Internet Header Length) field: The datagram
• image (MIME data content type): Multipurpose Internet Mail Extensions
• IMAP (Internet Message Access Protocol): Internet Message Access Protocol
• • commands: Internet Message Access Protocol
  • servers, configuring: IMAP Server
• implicit (sendmail K command value): The sendmail K Command
• import keyword (dbmmanage command): Improved user authentication
• import statement (gated): Control Statements
• • The import Statement
• importdefault parameter (gated): The egp Statement
• in-addr.arpa domains: Obtaining an IN-ADDR.ARPA domain
• IN value (DNS resource records): Standard Resource Records
• inactivity_timeout statement (Solaris PPP): Solaris PPP
• inc command (dip): The dip Script File
• include files, gated: Directive Statements
• Includes (Options directive setting): Controlling Server Options
• IncludesNOEXEC (Options directive setting): Controlling Server Options
• indefinite tokens (sendmail pattern matching): Pattern Matching
• indelay parameter (gated): The bgp Statement
• indexes, directory (Apache): Creating a Fancy Index
• Indexes (Options directive setting): Controlling Server Options
• index=file option (share command): The share command
• index.html file (Apache): Configuring Apache on Solaris
• IndexIgnore directive (Apache): Creating a Fancy Index
• IndexOptions directive (httpd.conf file): Creating a Fancy Index
• indirect map configuration file (automounter): NFS Automounter
• ineligible parameter (gated): The routerdiscovery Statement
• inet6 option (resolv.conf file): The Resolver Configuration File
• inet6 parameter (gated): The isis Statement
• inetd: The Internet Daemon
• inetd.conf file
• • fields: The Internet Daemon
  • NFS daemons, starting: NFS Daemons
• info domain: The Domain Hierarchy
• info parameter (gated)
• • icmp statement: The icmp Statement
  • kernel statement: The kernel Statement
• information disclosure (security risk): Assessing the Threat
• informational RFCs: Protocol Standards
• init command (dip): The dip Script File
• init script option (pppd): The PPP Daemon
• init.d/httpd script (Apache): Using the Red Hat Package Manager
• Initial Sequence Number (ISN): Transmission Control Protocol
• inittab file, runlevels and: Understanding /etc/inittab
• INPUT_MAIL_FILTER macro (sendmail): sendmail Macros
• insmod command (Linux): Using Dynamically Loadable Modules
• installation
• • Apache, overview: Installing Apache Software
  • PPP: Installing PPP
  • sendmail: Compiling sendmail
• int domain: The Domain Hierarchy
• InterDomain Routing Protocol (IDRP): Border Gateway Protocol
• interface argument (ifconfig command): The ifconfig Command
• interface-interval option (named): The options Statement
• interface parameter
• • gated isis statement: The isis Statement
  • gated kernel statement: The kernel Statement
  • gated ospf statement: The ospf Statement
  • gated rip statement: The rip Statement
  • gated static statements: static Statements
• interfaces
• • configuring
  • • checking: Checking the Interface with ifconfig
    • ifconfig command: The ifconfig Command
    • troubleshooting: Troubleshooting with the ifconfig Command
  • connectors (OSI Physical Layer): Data Communications Model
  • determining avaliable: The Interface Name
  • enabling and disabling, ifconfig command: Enabling and disabling the interface
  • gated support: Interface Statements
  • hardware, identifying installed: The device statement
  • serial lines, overview: TCP/IP Over a Serial Line
• interior routing protocols
• • gated sample configuration: Interior gateway configurations
  • OSPF: Open Shortest Path First
  • overview: Interior Routing Protocols
  • RIP: Routing Information Protocol
  • routed command: Running RIP with routed
• Intermediate System to Intermediate System (see IS-IS)
• internal classes, sendmail: sendmail Classes
• Internet
• • architecture, routing: Internet Routing Architecture
  • growth of: TCP/IP and the Internet
  • • effect on addressing schemes: CIDR Blocks and Route Aggregation
  • history of: TCP/IP and the Internet
  • tier-one providers: TCP/IP and the Internet
• Internet Assigned Numbers Authority (see IANA)
• Internet Control Message Protocol (see ICMP)
• Internet Control Protocol (IPCP): The Serial Protocols
• Internet Corporation for Assigned Names and Numbers (see ICANN)
• Internet end user (organizational type): Obtaining an official network address
• Internet Engineering Task Force (see IETF)
• Internet Header Length (IHL) field: The datagram
• Internet Layer: Internet Layer
• • ICMP: Internet Control Message Protocol
  • IP datagrams: Internet Protocol
  • • forwarding: Passing datagrams to the transport layer
    • fragmenting: Fragmenting datagrams
    • routing: Routing datagrams
• Internet Protocol (see IP)
• Internet Routing Registry (see IRR)
• Internet Service Providers (see ISPs)
• Internet standards (RFCs): Protocol Standards
• intr option (vfstab file): The vfstab and fstab files
• intranets: Connected and Non-Connected Networks
• • defined: TCP/IP and the Internet
• intruder detection: Looking for Trouble
• IP addresses
• • assigning
  • • contiguous blocks of: CIDR Blocks and Route Aggregation
    • ifconfig command: The ifconfig Command
    • • Assigning an Address
  • bit masks: The Natural Mask
  • broadcast: The IP Address
  • • assigning: Setting the Broadcast Address
  • CIDR: CIDR Blocks and Route Aggregation
  • classes: The Natural Mask
  • data delivery: Addressing, Routing, and Multiplexing
  • datagrams: The IP Address
  • default masks, identifying: The Natural Mask
  • dotted decimal notation: The IP Address
  • expected utilization rate: Obtaining an official network address
  • hostnames: Names and Addresses
  • • locating with dig: dig: An Alternative to nslookup
  • interpreting: The Natural Mask
  • IPv6: IPv6
  • loopback, localhost: The Host Table
  • multicast: The IP Address
  • natural mask: The Natural Mask
  • network growth, effect on addressing schemes: CIDR Blocks and Route Aggregation
  • nslookup and: Using nslookup
  • obtaining: Address Structure
  • • Obtaining an IP Address
  • official, assessing need for: Obtaining an official network address
  • pppd command and: The PPP Daemon
  • registries, obtaining addresses from: Obtaining an official network address
  • resolution: Address Resolution
  • reverse domains: Obtaining an IN-ADDR.ARPA domain
  • routing tables, reducing size of: CIDR Blocks and Route Aggregation
  • share command and: The share command
  • shortage of: IPv6
  • structure: Address Structure
  • subnet masks
  • • assigning: Assigning a Subnet Mask
    • creating: Subnets
    • RFCs: Subnets
  • subnets: Subnets
  • translation
  • • forward-mapping zone files: The Forward-Mapping Zone File
    • overview: Obtaining an IP Address
    • reverse zone files: The Reverse Zone File
    • troubleshooting: Troubleshooting with the arp Command
  • unicast: The IP Address
  • uniqueness of: Obtaining an IP Address
• IP datagram header: Appendix g.1. IP Datagram Header
• IP (Internet Protocol)
• • datagrams: The datagram
  • forwarding datagrams: Passing datagrams to the transport layer
  • fragmenting datagrams: Fragmenting datagrams
  • overview: Internet Protocol
  • RFC 791: Names and Addresses
  • routing datagrams: Routing datagrams
  • versions: Internet Layer
• ip module, ip_forwarding variable: Using Dynamically Loadable Modules
• IPADDR (Linux configuration value): Assigning an Address
• ipcp-accept-local option (pppd): The PPP Daemon
• ipcp-accept-remote option (pppd): The PPP Daemon
• IPCP (Internet Control Protocol): The Serial Protocols
• ipcp-max-configure option (pppd): The PPP Daemon
• ipcp-max-failure option (pppd): The PPP Daemon
• ipcp-max-terminate option (pppd): The PPP Daemon
• ipcp-restart option (pppd): The PPP Daemon
• ip_forwarding variable (ip module), configuring: Using Dynamically Loadable Modules
• Ipkts field (netstat command): The Interface Name
• ipparam option (pppd): The PPP Daemon
• iptables command
• • filtering routers: Defining iptables filter rules
  • samples: Sample iptables commands
• IPv6: CIDR Blocks and Route Aggregation
• • IPv6
  • demand for: IPv6
  • efficiency of: IPv6
• IPv4 flag (ifconfig command): Checking the Interface with ifconfig
• ipv6 option (pppd): The PPP Daemon
• ipv6cp-max-configure option (pppd): The PPP Daemon
• ipv6cp-max-failure option (pppd): The PPP Daemon
• ipv6cp-max-terminate option (pppd): The PPP Daemon
• ipv6cp-restart option (pppd): The PPP Daemon
• ipv6cp-use-ipaddr option (pppd): The PPP Daemon
• ipv6cp-use-persistent option (pppd): The PPP Daemon
• IRR (Internet Routing Registry): Internet Routing Architecture
• • Registering in a Routing Database
• IRs (Internet Registries), address requests: Obtaining an official network address
• IS-IS (Intermediate System to Intermediate System), overview: Interior Routing Protocols
• isis statement (gated): The isis Statement
• ISN (Initial Sequence Number): Transmission Control Protocol
• ISPs (Internet Service Providers): TCP/IP and the Internet
• • addresses, assigning: Address Structure
  • as organizational type: Obtaining an official network address
• ISS (automated system monitoring): Automated Monitoring

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