E1

European equivalent of a T1 leased line circuit.

EAP

Extensible Authentication Protocol. Defined by RFC 2284, EAP provides a general protocol for AAA functions in PPP and related servers. It is currently supported and driven primarily by Microsoft Windows RAS software.

EAPOE

Extensible Authentication Protocol Over

Ethernet. A proposed IEEE standard for authenticating workstations to the switch and remote servers.

EAR

Export Administration Regulations. The rules under which United States government regulates the export of cryptography software in both binary and source form.

EBGP

Exterior Border Gateway Protocol. A pair of routers under two distinct Autonomous System administrative domains which exchange routes, such as beetween two ISPs which have a peering agreement.

Editor

One of several programs in Unix used to create and modify text files, some common editors include vi, ee and, pico.

Eiffel

An object-oriented programming language designed to encourage reusable, correct software. Created by Bertrand Meyer, the language is named after Gustave Eiffel, the designer of the Eiffel Tower. For more information visit the Eiffel home page and newsgroup

EIGRP

A Routing protocol. EIGRP Is IP protocol number 88. See also BGP.

E-Mail

See Mail.

EMC

EMC^2 is a company which produces high-capacity high-availablity storage solutions. The name is derived from the initials of the three founders. (mskalski)

Encryption

The process of using cryptography to protect data from unauthorized access.

ESP

Encapsulating Security Payload. A feature of IPSEC. As defined in RFC 2406.

Ethernet

A standard for LAN communications, ethernet defines the hardware and communications standard for communications at 10Mbps over coax, twisted-pair or fiber. There is also a 'fast ethernet' standard for both twisted pair and fiber. Ethernet is defined in IEEE 802.3.

Extranet

A private network segment providing limited connectivity between a completely non-public intranet, and outside partners or the public internet.