Dictionary of Information Security

I

IBM compatible originally, hardware compatible with

IBM mainframe systems, later hardware and/or soft-

ware compatible with IBM mainframes or mini-

computers. In the 1980s, the phrase came to be

associated with compatibility with ISA and MS-

DOS (and later Windows) systems.

ICMP Internet Control Message Protocol. Since these

packets, as the name suggests, relate to various types

of control information for the Internet, there are a

number of Internet security implications.

ICMP flood denial of service attack that sends a host more

ICMP (Internet Control Message Protocol) echo

request (“ping”) packets than the protocol imple-

mentation can handle

identification process that enables recognition of an entity

by a system, generally by the use of unique

machine-readab ...