User guide

D-8 Glossary
MIB Management Information Base is a formal description of a set of
network objects that can be managed using the Simple Network
Management Protocol (SNMP). The format of the MIB is defined
as part of the SNMP. A MIB is a collection of definitions defining
the properties of a managed object within a device. Every
managed device keeps a database of values for each of the
definitions written in the MIB. Definition of the MIB conforms to
RFC1155 (Structure of Management Information).
MIC Message Integrity Check or Code (MIC), also called ‘Michael’, is
part of WPA and TKIP. The MIC is an additional 8-byte code
inserted before the standard 4-byte integrity check value (ICV)
that is appended in by standard WEP to the 802.11 message. This
greatly increases the difficulty in carrying out forgery attacks.
Both integrity check mechanisms are calculated by the receiver
and compared against the values sent by the sender in the frame.
If the values match, there is assurance that the message has not
been tampered with. (See WPA, TKIP and ICV).
MTU Maximum Transmission Unit. The largest packet size, measured
in bytes, that a network interface is configured to accept. Any
messages larger than the MTU are divided into smaller packets
before being sent.
MU Mobile Unit, a wireless device such as a PC laptop.
multicast, broadcast, unicast Multicast: transmitting a single message to a select group of
recipients. Broadcast: sending a message to everyone connected
to a network. Unicast: communication over a network between a
single sender and a single receiver.
NAS Network Access Server, a server responsible for passing
information to designated RADIUS servers and then acting on the
response returned. A NAS-Identifier is a RADIUS attribute
identifying the NAS server. (RFC2138)
NAT Network Address Translator. A network capability that enables a
group of computers to dynamically share a single incoming IP
address. NAT takes the single incoming IP address and creates
new IP address for each client computer on the network.
Netmask In administering Internet sites, a netmask is a string of 0's and 1's
that mask or screen out the network part of an IP address, so that
only the host computer part of the address remains. A frequently-
used netmask is 255.255.255.0, used for a Class C subnet (one
with up to 255 host computers). The ".0" in the "255.255.255.0"
netmask allows the specific host computer address to be visible.
NIC Network Interface Card. An expansion board in a computer that
connects the computer to a network.
NMS Network Management System. The system responsible for
managing a network or a portion of a network. The NMS talks to
network management agents, which reside in the managed
nodes.
Term Definition