P314 Broadband Sharing Gateway with 4-Port Switch
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Glossary of Terms
Gateway
A gateway is a computer system or other device that acts as a translator between two
systems that do not use the same communication protocols, data formatting
structures, languages, and/or architecture.
HDLC
HDLC (High-level Data Link Control) is a bit-oriented (the data is monitored bit by bit
)
,
link layer protocol for the transmission of data over synchronous networks.
Host
Any computer on a network that is a repository for services available to other
computers on the network. It is quite common to have one host machine provide
several services, such as WWW and USENET.
HTTP
Hyper Text Transfer Protocol. The most common protocol used on the Internet. HTTP
is the primary protocol used for web sites and web browsers. It is also prone to certain
kinds of attacks.
IANA
Internet Assigned Number Authority acts as the clearinghouse to assign and
coordinate the use of numerous Internet protocol parameters such as Internet
addresses, domain names, protocol numbers, and more. The IANA Web site is at
http://www.isi.edu/iana.
ICMP
Internet Control Message Protocol is a message control and error-reporting protocol
between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP)
datagrams, but the messages are processed by the TCP/IP software and are not
directly apparent to the application user.
Integrity
Proof that the data is the same as originally intended. Unauthorized software or people
have not altered the original information.
internet
(Lower case i) Any time you connect 2 or more networks together, you have an
internet.
Internet
(Upper case I) The vast collection of inter-connected networks that all use the TCP/IP
protocols and that evolved from the ARPANET of the late 60’s and early 70’s. The
Internet now (July 1995) connects roughly 60,000 independent networks into a vast
global internet
Intranet
A private network inside a company or organization that uses the same kinds of
software that you would find on the public Internet, but that is only for internal use.
IP
Internet Protocol (currently IP version 4, or IPv4), is the underlying protocol for routing
packets on the Internet and other TCP/IP-based networks.
IPCP (PPP)
IP Control Protocol allows changes to IP parameters such as the IP address.
ISP
Internet Service Providers provide connections into the Internet for home users and
businesses. There are local, regional, national, and global ISPs. You can think of local
ISPs as the gatekeepers into the Internet.
LAN
Local Area Network is a shared communication system to which many computers are
attached. A LAN, as its name implies, is limited to a local area. This has to do more
with the electrical characteristics of the medium than the fact that many early LANs
were designed for departments, although the latter accurately describes a LAN as
well. LANs have different topologies, the most common being the linear bus and the
star configuration.
