User guide

D-6 Glossary
HTTPS Hypertext Transfer Protocol over Secure Socket Layer, or HTTP
over SSL, is a Web protocol that encrypts and decrypts user page
requests as well as the pages that are returned by the Web server.
HTTPS uses Secure Socket Layer (SSL) as a sublayer under its
regular HTTP application layering. (HTTPS uses port 443 instead
of HTTP port 80 in its interactions with the lower layer, TCP/IP.)
SSL uses a 40-bit key size for the RC4 stream encryption
algorithm, which is considered an adequate degree of encryption
for commercial exchange.
IBSS Independent Basic Service Set. See BSS. An IBSS is the 802.11
term for an adhoc network. See adhoc network.
ICMP Internet Control Message Protocol, an extension to the Internet
Protocol (IP) defined by RFC792. ICMP supports packets
containing error, control, and informational messages. The PING
command, for example, uses ICMP to test an Internet connection.
ICV ICV (Integrity Check Value) is a 4-byte code appended in standard
WEP to the 802.11 message. Enhanced WPA inserts an 8-byte
MIC just before the ICV. (See WPA and MIC)
IE Internet Explorer.
IEEE Institute of Electrical and Electronics Engineers, a technical
professional association, involved in standards activities.
IETF Internet Engineering Task Force, the main standards organization
for the Internet.
Infrastructure Mode An 802.11 networking framework in which devices communicate
with each other by first going through an Access Point (AP). In
infrastructure mode, wireless devices can communicate with each
other or can communicate with a wired network. (See ad-hoc
mode and BSS.)
Internet or IP telephony IP or Internet telephony are communications, such as voice,
facsimile, voice-messaging applications, that are transported over
the Internet, rather than the public switched telephone network
(PSTN). IP telephony is the two-way transmission of audio over a
packet-switched IP network (TCP/IP network).
An Internet telephone call has two steps: (1) converting the analog
voice signal to digital format, (2) translating the signal into Internet
protocol (IP) packets for transmission over the Internet. At the
receiving end, the steps are reversed. Over the public Internet,
voice quality varies considerably. Protocols that support Quality of
Service (QoS) are being implemented to improve this.
IP Internet Protocol is the method or protocol by which data is sent
from one computer to another on the Internet. Each computer
(host) on the Internet has at least one IP address that uniquely
identifies it. Internet Protocol specifies the format of packets, also
called datagrams, and the addressing scheme. Most networks
combine IP with a higher-level protocol called Transmission
Control Protocol (TCP), which establishes a virtual connection
between a destination and a source.
IPC Interprocess Communication. A capability supported by some
operating systems that allows one process to communicate with
another process. The processes can be running on the same
computer or on different computers connected through a network.
Term Definition