P314 Broadband Sharing Gateway with 4-Port Switch

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.

J

Glossary of Terms