Chapter 1. Before You Start
Air Live IAS-2000 User’s Manual V1.0
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Network
A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between
users.
Node
A network junction or connection point, typically a computer or work station.
Packet
A unit of data sent over a network.
Passphrase
Used much like a password, a passphrase simplifies the WEP encryption process by automatically generating the
WEP encryption keys for the company products.
POP
Post Office Protocol. Short for Post Office Protocol, a protocol used to retrieve e-mail from a mail server. Most e-mail
applications (sometimes called an e-mail client) use the POP protocol, although some can use the newer IMAP
(Internet Message Access Protocol).
There are two versions of POP. The first, called POP2, became a standard in the mid-80's and requires SMTP to
send messages. The newer version, POP3, can be used with or without SMTP.
POP3
Post Office Protocol 3. A standard protocol used to retrieve e-mail stored on a mail server.
Port
1. The connection point on a computer or networking device used for plugging in a cable or an adapter.
2. The virtual connection point through which a computer uses a specific application on a server.
PPPoE
Point-to- Point Protocol over Ethernet. PPPoE relies on two widely accepted standards: PPP and Ethernet. PPPoE
is a specification for connecting the users on an Ethernet to the Internet through a common broadband medium,
such as a single DSL line, wireless device or cable modem. All the users over the Ethernet share a common
connection, so the Ethernet principles supporting multiple users in a LAN combine with the principles of PPP, which
apply to serial connections.
PPTP
Point-to-Point Tunneling Protocol. A new technology for creating Virtual Private Networks (VPNs), developed jointly
by Microsoft Corporation, U.S. Robotics, and several remote access vendor companies, known collectively as the
PPTP Forum. A VPN is a private network of computers that uses the public Internet to connect some nodes.
Because the Internet is essentially an open network, the Point-to-Point Tunneling Protocol (PPTP) is used to ensure