Glossary
GL-4
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows
OL-1394-04
L
LEAP
LEAP, or EAP-Cisco Wireless, is the 802.1X authentication type that is available for use with operating
systems that do not have EAP support. Support for LEAP is provided in the client adapter’s firmware
and the Cisco software that supports it, rather than in the operating system. With LEAP, a username and
password are used by the client adapter to perform mutual authentication with the RADIUS server
through an access point.
M
MAC Address
The Media Access Control (MAC) address is a unique serial number assigned to a networking device
by the manufacturer.
MIC
Message integrity check. MIC prevents bit-flip attacks on encrypted packets. During a bit-flip attack,
an intruder intercepts an encrypted message, alters it slightly, and retransmits it, and the receiver
accepts the retransmitted message as legitimate. The client adapter’s driver must support MIC
functionality, and MIC must be enabled on the access point.
Modulation
Any of several techniques for combining user information with a transmitter’s carrier signal.
Multicast Packets
Packets transmitted to multiple stations.
Multipath
The echoes created as a radio signal bounces off of physical objects.
O
OFDM
Orthogonal frequency division multiplexing. A multicarrier modulation method for broadband wireless
communications.
Overrun Packets
Packets that were discarded because the access point had a temporary overload of packets to handle.
P
Packet
A basic message unit for communication across a network. A packet usually includes routing
information, data, and sometimes error detection information.
Q
QPSK
Quadruple phase shift keying. A modulation technique used by IEEE 802.11-compliant wireless LANs
for transmission at 2 Mbps.
