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Internet browser), the user is sent to the proper IP address. The DNS server address used by the
computers on your home network is the location of the DNS server your ISP has assigned.
DSL - DSL stands for Digital Subscriber Line. A DSL modem uses your existing phone lines to
transmit data at high speeds.
EAP - (Extensible Authentication Protocol) This is a mode of conversation between a Supplicant
and an Authentication Server. Access Points or proxy servers do not take part in the
conversation. Their role is simply to forward EAP messages between the parties performing the
authentication. The EAP messages are transported between a wireless station and an 802.1X
Authenticator using EAPOL. The EAP messages are sent between an 802.1X Authenticator and
the Authentication Server using RADIUS. The EAP framework supports the definition of EAP-Type
Authentication Methods. Today, the major EAP-Type Authentication Methods include EAP-MD5,
EAP-TLS, EAP-TTLS, EAP-PEAP, and Cisco's EAP-LEAP.
EAP-MD5 - This is the most basic EAP-Type, which must be supported by all implementations of
EAP. It is not a strong authentication method and does not support dynamic WEP keys.
EAP-LEAP - (Lightweight Extensible Authentication Protocol) It is the type primarily used on Cisco
WLAN access points. LEAP provides security during credential exchange, encrypts using dynamic
WEP keys, and supports mutual authentication.
EAP-TLS - (Transport Layer Security) This uses the TLS handshake as the basis for
authentication. TLS performs authentication by exchanging digital certificates. The server sends a
certificate to the client and only after validating the server's certificate does the client present a
client certificate.
EAP-TTLS - (Tunneled TLS) This mode an advantage over EAP-TLS that it only requires a
certificate at the Authentication Server.
Ethernet - A standard for computer networks. Ethernet networks are connected by special cables
and hubs, and move data around at up to 10 million bits per second (Mbps).
ESS - ESS (ESS-ID, SSID) stands for "Extended Service Set". More than one BSS is configured to
become an Extended Service Set. LAN mobile users can roam between different BSSs in an ESS
(ESS-ID, SSID).
Fast Ethernet NIC - Network interface card that is in compliance with the IEEE 802.3u standard.
This card functions at the media access control (MAC) layer, using carrier sense multiple access
with collision detection (CSMA/CD).
Fixed IP – (see Static IP)
Full-Duplex - Transmitting and receiving data simultaneously. In pure digital networks, this is
achieved with two pairs of wires. In analog networks, or digital networks using carriers, it is
achieved by dividing the bandwidth of the line into two frequencies, one for sending, one for
receiving.
Hub - Central connection device for shared media in a star topology. It may add nothing to the
transmission (passive hub) or may contain electronics that regenerate signals to boost strength
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