IAB (Internet Architecture Board) Internet Architecture Board (IAB) ICMP (Internet Control Message Protocol) idle mode (PVCs) IDSL (Integrated Services Digital Network Digital Subscriber Line) IDSs (Intrusion Detection Systems) IDSs:host-based host-based IDS security:IDS:host-based;unauthorized access:intrusion detection:host-based IDS IDSs:network-based network-based IDS security:IDS:network-based;unauthorized access:intrusion detection:network-based IDS IDSs:statistical profiling security:IDSs:signature analysis unauthorized access:IDSs:signature analysis;signature analysis 2nd 3rd security:IDSs:statistical profiling unauthorized access:IDSs:statistical profiling;statistical profiling IEEE (Institute of Electrical and Electronic Engineers) Institute of Electrical and Electronic Engineers (IEEE) IGPs (Interior Gateway Protocols) IGRP:load balancing load balancing:IGRP traffic:IGRP:load balancing IGRP:load balancing:equal-cost load balancing:IGRP:equal-cost traffic:IGRP:load balancing;equal-cost load balancing IGRP:load balancing:feasible successors load balancing:IGRP:feasible successors traffic:IGRP:load balancing;feasible successors (IGRP) 2nd IGRP:load balancing:unequal-cost load balancing:IGRP:unequal-cost traffic:IGRP:load balancing;unequal-cost load balancing IGRP:metrics metrics:IGRP IGRP:metrics:calculating metrics:IGRP:calculating calculating:IGRP metrics 2nd IGRP:metrics:delay metrics:IGRP:delay delay metric:IGRP IGRP:metrics:hop count metrics:IGRP:hop count hop count:IGRP IGRP:metrics:link bandwidth metrics:IGRP:link bandwidth link bandwidth:IGRP;bandwidth:link bandwidth (IGRP) IGRP:metrics:load metrics:IGRP:load load metric:IGRP IGRP:metrics:MTU metrics:IGRP:MTU MTU:IGRP IGRP:metrics:reliability metrics:IGRP:reliability reliability metric:IGRP IGRP:timers timers:IGRP 2nd IGRPs (interior gateway routing protocols) IKE (Internet Key Exchange) security:IKE DOI (Domain of Interpretation) 2nd illicit command execution normal user access:illicit command execution administrator access:illicit command execution;security:illicit command execution information formats of transmitted data format of transmitted data interworking:information formats information formats of transmitted data:cells format of transmitted data:cells interworking:information formats:cells;cells information formats of transmitted data:datagrams format of transmitted data:datagrams interworking:information formats:datagrams;datagrams information formats of transmitted data:frames format of transmitted data:frames interworking:information formats:frames;frames information formats of transmitted data:packets format of transmitted data:packets interworking:information formats:packets;packets information formats of transmitted data:segments format of transmitted data:segments interworking:information formats:segments;segments 2nd Init state (OSPF) inter-area route summarization areas:inter-area route summarization interdomain algorithms interfaces:NNIs NNIs (ntework-to-network interfaces) WANs:interfaces:NNIs 2nd interfaces:UNIs UNIs (user-to-network interfaces) WANs:interfaces:UNIs interLATA connections internal routers (OSPF) Internet protocols WWW:Internet protocols 2nd Internet protocols:chat WWWInternet protocols:chat chat ;IRC;IM (instant messaging) Internet protocols:e-mail WWW:Internet protocols:e-mail e-mail Internet protocols:FTP WWWInternet protocols:FTP FTP 2nd Internet protocols:Telnet WWW:Internet protocols:Telnet Telnet Internet protocols:Usenet news WWWInternet protocols:Usenet news Usenet news Internet:programming languages programming languages:Web-based Web programming languages 2nd intradomain algorithms intraLATA connections intranet servers intrusion detection unauthorized access:intrusion detection detecting:unauthorized access IP (Internet Protocol) IP (Internet Protocol):QoS QoS:IP IP (Internet Protocol):QoS:reliability mechanisms QoS:IP:reliability mechanisms reliability:IP 2nd IP addressing DNS IP addressing:CIDR IP addressing:VLSM 2nd IP addressing:Class A addresses Class A addresses TCP/IP:IP addressing:Class A addresses IP addressing:Class B addresses Class B addresses TCP/IP:IP addressing:Class B addresses IP addressing:Class C addresses Class C addresses TCP/IP:IP addressing:Class C addresses IP addressing:Class D addresses Class D addresses TCP/IP:IP addressing:Class D addresses IP addressing:Class E addresses Class E addresses TCP/IP:IP addressing:Class E addresses IP addressing:loopback addresses TCP/IP:IP addressing:loopback addresses loopback addresses 2nd 3rd IP prefix IPSec security:IPSec cryptosystems:IPSec IRB (Integrated Routing and Bridging) ISDN (Integrated Services Digital Network) ISO (International Organization for Standardization) International Organization for Standardization (ISO) ISO Hierarchical model interworking:ISO Hierarchical model ES (end system);IS (intermediate system);intermediate system (IS);end system (ES) ITU-T M.3000 recommendation ITU-T Q.933 LMI specification IXC (Interexchange Carrier) IXCs (inter-exchange carriers) switched access