Gelbe Linie

USER DATAGRAM PROTOCOL (UDP)


BACKGROUND:

UDP is a connectionless service that sends small amounts of data at one time and does not guarantee delivery. It is commonly used with applications such as NETSTAT, TFTP, SNMP, NETBIOS name service and NETBIOS datagram service. Like TCP, UDP uses ports to provide the location to send packets.

HEADER STRUCTURE:

***SOURCE PORT:

UDP port of the source host.

***DESTINATION PORT:

UDP port of receiving host.

***MESSAGE LENGTH:

The total size of the UDP packet.

***CHECKSUM:

Verifies that the header is intact.