User`s guide
Glossary
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Digi Connect Family User’s Guide
wireless LANs. TKIP provides per-packet key mixing, a message integrity check and a
re-keying mechanism, and addresses several design shortcomings of the original WEP.
TFTP
See Trivial File Transfer Protocol (TFTP).
TLS
See Transport Layer Security.
Transmission Control Protocol (TCP)
A set of rules (protocol) used along with the Internet Protocol (IP) to send data in the
form of message units between computers over the Internet. While IP handles the actual
delivery of the data, TCP handles keeping track of the individual units of data (called
packets) that a message is divided into for efficient routing through the Internet.
For example, when an HTML file is sent to you from a Web server, the Transmission
Control Protocol (TCP) program layer in that server divides the file into one or more
packets, numbers the packets, and then forwards them individually to the IP program
layer. Although each packet has the same destination IP address, it may get routed
differently through the network. At the other end (the client program in your computer),
TCP reassembles the individual packets and waits until they have arrived to forward
them to you as a single file.
TCP is known as a connection-oriented protocol, which means that a connection is
established and maintained until such time as the message or messages to be exchanged
by the application programs at each end have been exchanged. TCP is responsible for
ensuring that a message is divided into the packets that IP manages and for
reassembling the packets back into the complete message at the other end. In the Open
Systems Interconnection (OSI) communication model, TCP is in layer 4, the Transport
Layer.
Transport Layer Security (TLS)
A protocol that ensures privacy between communicating applications and their users on
the Internet. When a server and client communicate, TLS ensures that no third party
may eavesdrop or tamper with any message. TLS is the successor to the Secure Sockets
Layer (SSL).
Trivial File Transfer Protocol (TFTP)
An Internet software utility for transferring files that is simpler to use than the File
Transfer Protocol (FTP) but less capable. It is used where user authentication and