Intellinet 524360 (Annex A) User Manual page 38

Idle Timeout: After there is no traffic to the Internet for a pre-configured amount
of time, Idle Timeout automatically disconnects from it.
ISP: The Internet Service Provider is a business that provides connectivity to the
Internet for individuals, businesses and organizations.
ISP Gateway Address: This is an IP address for the Internet router located at
the ISP's office.
LAN: A local Area network is a group of computers and devices connected in a
relatively small area (e.g., a house or office). A home network is considered a lAn.
MAC Address: A Media Access Control (MAC) address is the hardware
address of a device connected to a network. It's a unique identifier for a device
with an ethernet interface. It is composed of two parts: 3 bytes of data that
correspond to the manufacturer Id (unique for each manufacturer), plus 3 bytes
that are often used as the product's serial number.
MTU: Maximum Transmission Unit.
NAT: A network Address Translator, as defined by RFC 1631 (see RFC below),
enables a lAn network to use one set of IP addresses for internal traffic. A
nAT box, located where the lAn meets the Internet, provides the necessary IP
address translation. This helps provide a sort of firewall and allows for a wider
address range to be used internally without danger of conflict. Using the router's
nAT capability, the Internet can be accessed from any computer on a home
network without having to purchase more IP addresses from the ISP.
Port: network clients (lAn PC) use port numbers to distinguish one network
application/protocol from another. Common examples:
Application
Telnet
FTP
SMTP
PoP3
H.323
SnMP
PPP: Point-to-Point-Protocol is the successor to SlIP. It provides router-to-router and
host-to-network connections over both synchronous and asynchronous circuits.
PPPoA (RFC 2364): The Point-to-Point Protocol (PPP) provides a standard method for
transporting multi-protocol data grams over point-to-point links. This document describes
the use of ATM Adaptation layer 5 (AAl5) for framing PPP-encapsulated packets.
PPPoE (RFC 2516): This document describes how to build PPP sessions and
encapsulate PPP packets over the ethernet. PPP over ethernet (PPPoe) provides
the ability to connect a network of hosts over a simple bridging access device
to a remote access concentrator.
Protocol: A protocol is a set of rules for interaction agreed upon between
multiple parties so that when they interface with each other based on such a
38
GloSSARY
524360_524377_01_man.indd 38
Protocol Port No. Application
TCP 23 SnMP Trap
TCP 21 HTTP
TCP 25 PPTP
TCP 110 PC Anywhere TCP
TCP 1720 PC Anywhere UdP
UCP 161
Protocol Port No.
UdP 162
TCP 80
TCP 1723
5631
5632
12/18/08 2:24:02 PM