- E -

electronic mail (e-mail)

Electronic mail, or e-mail, is a way users with a computer can send messages between each other easily and more quickly than regular mail.

e-mail (Electronic Mail)

Electronic mail, or e-mail, is a way users with a computer can send messages between each other easily and more quickly than regular mail.

e-mail address

A person’s email address is usually like this:

Userid@domain.com

Userid represents the identification of the person, the @ is what separates the userid from the domain name, and the domain name refers to the host that the person is using.

encryption

This is what Internet security is built upon. Encryption will scramble information so it is readable only by the intended recipient.

Ethernet

An Ethernet connection is a LAN (Local Area Network) that consists of computers connected by twisted-pair or coaxial cable. Transfers can be made on an Ethernet connection at up to 10 Mb/s.

- D -

Data Encryption Key (DEK)

Used for encryption and decryption of message text.

Data Encryption Standard (DES)

Standardized encryption method used most on the Internet.

datagram

A block of data that can travel from one Internet site to another without relying on an earlier exchange between the source and destination computers.

DDN (Defense Data Network)

The United States Department of Defense global communications network.

DECnet

A proprietary network protocol designed by Digital Equipment Corporation.

dedicated line

A communications line used solely for computer connections, such as T1 and T3 lines. An additional phone line solely for your modem is a dedicated line as well.

Defense Data Network (DDN)

The United States Department of Defense global communications network.

dial-up

Most widely used way of accessing the Internet. This involves one computer connecting to another by way of a modem.

DNS (Domain Name Service)

A name service used with TCP/IP hosts. A DNS exists on numerous servers over the Internet. It is a database for finding host names and IP addresses on the Internet and trying to figure them out.

domain

An area on host or an IP address.

Domain Name Service (DNS)

A name service used with TCP/IP hosts. A DNS exists on numerous servers over the Internet. It is a database for finding host names and IP addresses on the Internet and trying to figure them out.

dot address

IP addresses in the form of 1.1.1.1 in a 4-byte IP address where each number is equal to 1 byte.

- C -

CHAP (Challenge-Handshake Authentication Protocol)

A method of authentication when connecting to an Internet service provider.

Challenge-Handshake Authentication Protocol (CHAP)

A method of authentication when connecting to an Internet service provider.

CHAT

Conversational Hypertext Access Technology.

CIX

Commercial Internet Exchange.

client

An application that performs for a certain purpose.

cracker

Persons who attempt to gain illegal access to computers. Not to be confused with hackers.

Cyberspace

According to M.N.A “the world of computers and the society that gathers around them.”