UDP

ALSO CALLED: Internet Key Exchange, User Datagram Protocol, UDP Port 500, UDP 500, UDP/500, IKE (Internet Key Exchange), and Datagram Protocol
DEFINITION: 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  … 
Definition continues below.

UDP DEFINITION (continued): …  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. Specifically, UDP doesn't provide sequencing of the packets that the data arrives in. This means that the application program that uses UDP must be able … 
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