Glossary
159
H
HTTP
The Hypertext Transfer Protocol (
HTTP
) defines
how messages are formatted and transmitted on the
World Wide Web. An HTTP message consists of a
URL
and a command (
GET
,
HEAD
,
POST
, etc.), a
request followed by a response.
HTTPS
The Secure Hypertext Transfer Protocol (HTTPS) is
the secure version of HTTP, the communication
protocol of the World Wide Web. HTTPS is built into
the browser. If you are using HTTPS you will notice
a closed lock icon at the bottom corner of your
browser page.
All data sent via HTTPS is encrypted, thus ensuring
secure transactions take place.
I
IAPP
The Inter Access Point Protocol (IAPP) is an
IEEE
standard (
802.11f
) that defines communication
between the access points in a “distribution system”.
This includes the exchange of information about
mobile stations and the maintenance of bridge
forwarding tables, plus securing the communications
between access points.
IBSS
An independent basic service set (IBSS) is an
Ad hoc
Mode
Wireless Networking Framework
in which
stations communicate directly with each other.
IEEE
The Institute of Electrical and Electronic Engineers
(IEEE) is an international standards body that
develops and establishes industry standards for a
broad range of technologies, including the 802
family of networking and wireless standards. (See
802
,
802.1X
,
802.11
,
802.11a
,
802.11b
,
802.11e
,
802.11f
,
802.11g
, and
802.11i
.)
For more information about IEEE task groups and
standards, see
http://standards.ieee.org/
.
Infrastructure Mode
Infrastructure Mode is a
Wireless Networking
Framework
in which wireless stations communicate
with each other by first going through an
Access
Point
. In this mode, the wireless stations can
communicate with each other or can communicate
with hosts on a wired network. The access point is
connected to a wired network and supports a set of
wireless stations.
An infrastructure mode framework can be provided
by a single access point (
BSS
) or a number of access
points (
ESS
).
Intrusion Detection
The Intrusion Detection System (IDS) inspects all
inbound network activity and reports suspicious
patterns that may indicate a network or system attack
from someone attempting to break into the system. It
reports access attempts using unsupported or known
insecure protocols.
IP
The Internet Protocol (IP) specifies the format of
packets, also called datagrams, and the addressing
scheme. IP is a connectionless, best-effort packet
switching protocol. It provides packet routing,
fragmentation and re-assembly. It is combined with
higher-level protocols, such as
TCP
or
UDP
, to
establish the virtual connection between destination
and source.
The current version of IP is IPv4. A new version,
called IPv6 or IPng, is under development. IPv6 is an
attempt to solve the shortage of IP addresses.
IP Address
Systems are defined by their IP address, a four-byte
(octet) number uniquely defining each host on the
Internet. It is usually shown in form
10.90.90.91
.
This is called dotted-decimal notation.
An IP address is partitioned into two portions: the
network prefix and a host number on that network. A
Subnet Mask
is used to define the portions. There are
