Chapter 1. Before You Start
Air Live IAS-2000 User’s Manual V1.0
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HTTP
HyperText Transport Protocol. The communications protocol used to connect to servers on the World Wide Web.
IEEE
Institute of Electrical and Electronics Engineers, New York, www.ieee.org. A membership organization that includes
engineers, scientists and students in electronics and allied fields. It has more than 300,000 members and is involved
with setting standards for computers and communications.
Internet appliance
A computer that is intended primarily for Internet access is simple to set up and usually does not support installation
of third-party software. These computers generally offer customized web browsing, touch-screen navigation, e-mail
services, entertainment and personal information management applications. An Internet appliance can be Wi-Fi
enabled or it can be connected via a cable to the local network.
Infrastructure
Currently installed computing and networking equipment.
Infrastructure Mode
Configuration in which a wireless network is bridged to a wired network via an access point.
IP
Internet Protocol. A set of rules used to send and receive messages at the Internet address level.
IP address
A 32-bit number that identifies each sender or receiver of information that is sent across the Internet. An IP address
has two parts: an identifier of a particular network on the Internet and an identifier of the particular device (which can
be a server or a workstation) within that network.
IPsec
IP Security. A set of protocols developed by the IETF to support secure exchange of packets at the IP layer. IPsec
has been deployed widely to implement Virtual Private Networks (VPNs).
IPsec supports two encryption modes: Transport and Tunnel. Transport mode encrypts only the data portion
(payload) of each packet, but leaves the header untouched. The more secure Tunnel mode encrypts both the
header and the payload. On the receiving side, an IPSec-compliant device decrypts each packet.
For IPsec to work, the sending and receiving devices must share a public key. This is accomplished through a
protocol known as Internet Security Association and Key Management Protocol/Oakley (ISAKMP/Oakley), which
allows the receiver to obtain a public key and authenticate the sender using digital certificates.
ISDN
Integrated Services Digital Network.
A type of broadband Internet connection that provides digital service from the