Fragmentation

The fundamental unit of information passed across the Internet. Contains source and destination addresses, along with data and a number of fields that define such things as the length of the datagram, the header checksum, and flags to say whether the datagram can be (or has been) fragmented.
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The process by which an IP datagram is “put back together” at the receiving hosts after having been fragmented in transit.
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A portion of a message that contains data and the destination address; also called a datagram. Typically located at the Network layer. Logical grouping of information that includes a header containing control information and (usually) user data. Packets are most often used to refer to network layer units of data. The terms “datagram,” “frame,” “message,” and “segment” are also used to describe logical information groupings at various layers of the OSI Reference Model and in various technology circles.
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An attack that exploits vulnerabilities in the fragment reassembly functionality of the TCP/IP protocol stack.
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Logical grouping of information sent as a network layer unit over a transmission medium without prior establishment of a virtual circuit. IP datagrams are the primary information units in the Internet. The terms “cell,” “frame,” “message,” “packet,” and “segment” are also used to describe logical information groupings at various layers of the OSI Reference Model and in various technology circles. The combination of Transport layer UDP header and payload.
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