3Com 3CRUS2475 User Manual page 328

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Transport Layer Transport Layer Security (TLS) is a protocol that ensures privacy between
Security (TLS) 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 A TCP/IP protocol commonly used for software downloads.
Protocol (TFTP)
Tunneled Transport A proposed wireless security protocol, developed by Funk Software and
Layer Security (TTLS) Certicom, that combines network-based certificates with other
authentication such as tokens or passwords. Also known as EAP-TTLS.
User Datagram provides a datagram mode for packet-switched communications. It
UDP
Protocol (UDP) uses IP as the underlying transport mechanism to provide access to
IP-like services. UDP packets are delivered just like IP packets –
connection-less datagrams that may be discarded before reaching their
targets. UDP is useful when TCP would be too complex, too slow, or
just unnecessary.
Virtual LAN (VLAN) A Virtual LAN is a collection of network nodes that share the same
collision domain regardless of their physical location or connection
point in the network. A VLAN serves as a logical workgroup with no
physical barriers, and allows users to share information and resources as
though located on the same LAN.
XModem A protocol used to transfer files between devices. Data is grouped in
128-byte blocks and error-corrected.