5/26/05 Glossary
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Encryption Key
An alphanumeric (letters and/or numbers) series that enables data to be encrypted and then decrypted
so it can be safely shared among members of a network. WEP uses an encryption key that automati-
cally encrypts outgoing wireless data. On the receiving side, the same encryption key enables the
computer to automatically decrypt the information so it can be read.
Enterprise
A term that is often applied to large corporations and businesses. The enterprise market can incorpo-
rate office buildings, manufacturing plants, warehouses and R&D facilities, as well as large colleges and
universities.
ESSID
The identifying name of an 802.11 wireless network. When you specify your correct ESSID in your
client setup you ensure that you connect to your wireless network rather than another network in
range. (See SSID.) ESSID is also known as Network Name, Preferred Network, SSID or Wireless LAN
Service Area.
Ethernet
International standard networking technology for wired implementations. Basic 10BASE-T networks
offer a bandwidth of about 10 Mbps. Fast Ethernet (100 Mbps) and Gigabit Ethernet (1000 Mbps) are
becoming popular.
Exclusion ListExclusion List
Clients who fail to authenticate three times when attempting to associate are automatically blocked, or
Excluded, from further association attempts for an operator-defined timeout. After the Exclusion
timeout, the client is allowed to retry authentication until it associates or fails authentication and is
Exclusion again.
The Operating System also allows operators to permanently Exclude clients by MAC address.
Note that this feature was formerly known as Blacklisting and Disabling.
FCS
Frame Check Sequence. A cyclic redundancy check (CRC) Physical Layer 1 error-detection algorithm.
FIPS
Federal Information Processing Standard. Refer to FIPS Publication 197 (http://csrc.nist.gov/publica-
tions/fips/fips197/fips-197.pdf) for more information.
Firewall
A system that enforces an access control policy between two or more networks, securing the
network(s) and preventing access by unauthorized users. Firewalls can be software, hardware or a
combination of both. Firewalls can prevent unrestricted access into a network, as well as restrict data
from flowing out of a network.
FireWire
A high-speed serial bus system, FireWire is the IEEE 1394 standard for input/output technology that
connects multimedia and storage peripherals to a PC. FireWire (Apple), 1394 (Linux) and iLink (Sony)
are different names for products that perform the same function. FireWire can provide a bandwidth of
about 400 Mbps.
.FPE.FPE
A filename extension used by the Floor Plan Editor for wall map configuration files. Requires a
corresponding .GIF, .JPG, .BMP, or .PNG file when importing into Cisco WCS.