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Glossary
network. SMB was later renamed to CIFS
(Common Internet File System) with more
features added, including support for
symbolic links, hard links, and larger file
sizes.
TFTP – Trivial File Transfer Protocol
A TCP/IP protocol commonly used for
software downloads.
TKIP – Temporal Key Integrity Protocol
A protocol used for WPA data encryption. It
ensures that a unique master key is
generated for each packet, supports message
integrity and sequencing rules, and supports
re-keying mechanisms. TKIP avoids the
problems of WEP static keys by dynamically
changing data encryption keys.
SSID – Service Set Identifier
A unique network name, or identifier, that
differentiates one wireless LAN from another.
All access points and clients attempting to
connect to a specific WLAN must use the
same SSID.
UDP – User Datagram Protocol
A connection-less transport service that
dispenses with the reliability services
provided by TCP. UDP gives applications a
direct interface with IP and the ability to
address a particular application process
running on a host via a port number, without
setting up a connection session.
Subnet
A portion of a network. The subnet is
distinguished from the larger network by a
subnet mask that selects some of the
computers of the network and excludes all
others. The subnet’s devices remain
physically connected to the rest of the
network, but they are treated as though they
were on a separate network.
UPnP – Universal Plug and Play
A networking architecture that provides
compatibility among networking equipment,
software, or between equipment and
software.
Subnet mask
A mask that defines a subnet. See also
Network mask.
Switching
Routing data traffic by setting up temporary
connections between two or more network
points. This will take the data toward its
intended destination.
UPnP IGD – UPnP Internet Gateway Device
A standard used by UPnP aware clients, such
as MSN Messenger, to work properly from
behind a NAT.
UMTS – Universal Mobile
Telecommunications Service
A 3G wireless system that delivers high-
bandwidth data and voice services to mobile
users. UMTS has an air interface based on
WCDMA and a core network based on the
General Packet Radio Service (GPRS).
TCP – Transmission Control Protocol
See TCP/IP.
TCP/IP – Transmission Control Protocol /
Internet Protocol
The basic protocols used on the Internet.
TCP is responsible for dividing data up into
packets for delivery and reassembling them
at the destination. IP is responsible for
delivering the packets from source to
destination. When TCP and IP are bundled
with higher-level applications such as HTTP,
FTP, Telnet, and so on, TCP/IP refers to this
whole suite of protocols.
URL – Uniform Resource Locator
The address of a resource on the Internet, for
example www.ericsson.com.
USB – Universal Serial Bus
An interface for connecting peripherals such
as storage devices and printers to a host.
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