A Christmas tree packet is a packet with every single option set for whatever protocol is in use. Also known as a "Kamikaze" packet, nastygram, and lamp test segment. A packet is the fundamental unit of information carriage in all modern computer networks. ...
The term probably derives from a fanciful image of each little option bit being represented by a different-colored light bulb, all turned on, as in, "the packet was lit up like a Christmas Tree."
Christmas Tree packets can be used as a method of divining the underlying nature of a TCP/IP stack by sending the packets and awaiting and analyzing the responses. Many operating systems implement their compliance with the Internet Protocol standard (RFC 791) in varying or incomplete ways. By observing how a host responds to an odd packet, such as a Christmas Tree packet, assumptions can be made regarding the host's operating system. Versions of Microsoft Windows, BSDi, HP-UX, Cisco IOS, MVS, and IRIX display behaviors that differ from the RFC standard when queried with said packets. The Internet protocol suite is the set of communications protocols that implement the protocol stack on which the Internet runs. ... The Internet Protocol (IP) is a data-oriented protocol used by source and destination hosts for communicating data across a packet-switched internetwork. ... Alternate meaning: Wikipedia:Requests for comment A Request for Comments (RFC) document is one of a series of numbered Internet informational documents and standards very widely followed by both commercial software and freeware in the Internet and Unix communities. ... Microsoft Windows is a range of operating environments for personal computers and servers. ... BSDi (or BSDI) is a common name for: Berkeley Software Design Inc. ... HP-UX is Hewlett-Packards proprietary implementation of the Unix operating system. ... Cisco IOS (originally Internetwork Operating System) is the operating system used on Cisco Systems routers and some network switches (those which dont use CatOS). ... MVS (Multiple Virtual Storage) was the most commonly used operating system on the System/370 and System/390 IBM mainframe computers. ... IRIX 6. ...
A Christmastreepacket is a packet with every single option set for whatever protocol is in use.
ChristmasTreepackets can be used as a method of divining the underlying nature of a TCP/IP stack by sending the packets and awaiting and analyzing the responses.
By observing how a host responds to an odd packet, such as a ChristmasTreepacket, assumptions can be made regarding the host's operating system.
One of the most popular traditions associated with the celebration of Christmas, the Christmastree is normally an evergreen conifer tree that is brought in the house or used in the open, and is decorated with Christmas lights and colourful ornaments during the days around Christmas.
The Christmastree is often explained as a Christianization of the ancient pagan idea that the evergreen tree represents a celebration of the renewal of life.
Traditionally, Christmastrees were not brought in and decorated until Christmas Eve (24 December), and then removed the day after twelfth night (i.e., 6 January); to have a tree up before or after these dates was even considered bad luck.
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