User's Manual Part 5

Access / One

Network

186 Glossary of Terms

DHCP

(Dynamic Host Configuration Protocol) A method for dynamically assigning IP

addresses to devices on a network. Issues IP addresses automatically within a

specified range to devices such as PCs when they are first powered up. The

device retains the use of the IP address for a specific license period defined by

the system administrator.

EAP

(Extensible Authentication Protocol) A general point-to-point protocol that

supports multiple authentication mechanisms. Defined in RFC 2284, EAP has

been adopted by IEEE 802.1X as an encapsulation protocol for carrying

authentication messages in a standard message exchange between a user (client

or supplicant) and an authenticator. See also, 802.1X.

EAPoL

(EAP over LAN) An encapsulated form of the Extensible Authentication Protocol

(EAP), defined in the IEEE 802.1X standard, that allows EAP messages to be

carried directly by a LAN media access control (MAC) service between a user

(client or supplicant) and an authenticator. See also, 802.1X.

EAP-TLS

(Extensible Authentication Protocol with Transport Layer Security) Used for

802.1X authentication. EAP-TLS supports mutual authentication and uses digital

certificates to address the mutual challenge. The authentication server responds

to a user authentication request with a server certificate. The user then replies

with its own certificate and validates the server certificate. EAP-TLS algorithm

derives session encryption keys from the certificate values. The authentication

server in turn sends the session encryption keys for a particular session to the

user after validating the user certificate. See also, authentication and EAP.

encryption

Any procedure used in cryptography to translate data into a form that can be

decrypted and read only by its intended receiver.