User's Manual Part 2

TCP/IP
Glossary of Terms 305
TCP/IP
TCP/IP (Transmission Control
Protocol/Internet Protocol) is the
underlying communication
protocol of the Internet.
U
UDP
UDP (User Datagram Protocol)
is a communications protocol
that offers a limited amount of
service when messages are
exchanged between computers in
a network that uses the Internet
Protocol (IP). UDP is an
alternative to the Transmission
Control Protocol (TCP) and,
together with IP, is sometimes
referred to as UDP/IP. Like the
Transmission Control Protocol,
UDP uses the Internet Protocol
to actually get a data unit (called
a datagram) from one computer
to another. Unlike TCP,
however, UDP does not provide
the service of dividing a message
into packets (datagrams) and
reassembling it at the other end.
UDP is often used for
applications such as streaming
data.
URL
A URL (Uniform Resource
Locator) is the address of a file
(resource) accessible on the
Internet. The type of resource
depends on the Internet
application protocol. On the Web
(which uses the Hypertext
Transfer Protocol), an example
of a URL is
'http://www.sofaware.com'.
V
VPN
A virtual private network (VPN)
is a private data network that
makes use of the public
telecommunication
infrastructure, maintaining
privacy through the use of a
tunneling protocol and security
procedures.
VPN tunnel
A secure connection between a
Remote Access VPN Client and
a Remote Access VPN Server.
W
WLAN
A WLAN is a wireless local area
network protected by the
Safe@Office appliance.