Wake-on-LAN is implemented using a special network message called a magic packet.

The listening computer waits for a magic packet addressed to it and then initiates system wake-up.

The magic packet is sent on the data link or layer 2 in the OSI model and broadcast to all NICs using the network broadcast address ; the IP-address ( layer 3 in the OSI model ) is not used.

The magic packet is a broadcast frame containing anywhere within its payload 6 bytes of all 255 ( FF FF FF FF FF FF in hexadecimal ), followed by sixteen repetitions of the target computer's 48-bit MAC address, for a total of 102 bytes.

Since the magic packet is only scanned for the string above, and not actually parsed by a full protocol stack, it may be sent as any network-and transport-layer protocol, although it is typically sent as a UDP datagram to port 7 or 9, or directly over Ethernet as EtherType 0x0842.

A standard magic packet has the following basic limitations:

Also, it is not always clear what kind of magic packet a NIC expects to see.

In that case, software tools like a packet analyzer can help with Wake-on-LAN troubleshooting as they allow to confirm ( while the PC is still on ) that the magic packet is indeed seen by a particular computer's NIC.

The same magic packet can then be used to find out if the computer powers up from an offline state.

Clients have to append this password to the magic packet.

The use of Wake-on-LAN technology on enterprise networks can sometimes conflict with network access control solutions such as 802. 1x or MAC-based authentication, which may prevent magic packet delivery if a machine's WoL hardware has not been designed to maintain a live authentication session while in a sleep state.

Because the encrypted communication is out-of-band, the PC ’ s hardware and firmware receive the magic packet before network traffic reaches the software stack for the operating system ( OS ).

Software which sends a WoL magic packet is referred to in different circles as both a " client " and a " server ", which can be a source of confusion.

Also there are web sites on the Internet that allow a magic packet to be sent online without charge.

Wake on Directed Packet is particularly useful as the machine will automatically come out of standby or hibernation when it is referenced, without the user or application needing to explicitly send a magic packet.

If the magic packet can be made to reach a computer, it can originate anywhere ( e. g., from the Internet ).

In the absence of a VPN, a computer connected to a router can be woken if a magic packet sent over the Internet is routed to it.

* DHCP packets use a " magic cookie " value of ' ' at the start of the options section of the packet.

A magic cookie or just cookie for short, is a token or short packet of data passed between communicating programs, where the data is typically not meaningful to the recipient program.

Because mandrake contains deliriant hallucinogenic tropane alkaloids such as atropine, scopolamine, apoatropine, hyoscyamine and the roots sometimes contain bifurcations causing them to resemble human figures, their roots have long been used in magic rituals, today also in neopagan religions such as Wicca and Germanic revivalism religions such as Odinism.

Shamanistic magic is focused on manipulation and alteration of the basic elements of the natural world ( earth, wind, fire, water and spirit ) and contains spell for both offense and convenience, such as Raywing, Fireball, or Elmekia Lance.

Johann Zahn's " Oculus Artificialis Teledioptricus Sive Telescopium, which was published in 1685, contains many descriptions and diagrams, illustrations and sketches of both the camera obscura and of the magic lantern.

A normal magic square contains the integers from 1 to n < sup > 2 </ sup >.

Arthas first exhumes the remains of Kel ' Thuzad, contains it in a magic urn of the ashes of his father, which was protected by Uther the Lightbringer, head paladin of The Order of the Silver Hand as well as Arthas ' former mentor and close friend.

This approach has been criticized by modern researchers who have proposed that themes mentioned in other genres, such as as fairy tales, legends, and records of folk beliefs and magic practices, might compliment folk songs as each genre contains different themes and might provide only partial insight into mythology.

Murfreesboro contains a Center for the Arts close to the Square, which entertains with a variety of exhibits, theatre arts, concerts, dances, and magic shows.

In later seasons it is revealed that Sunnydale contains a campus of the University of California system, as well as a profitable magic supply shop.

It contains a mixture of magic and medicine with invocations to banish disease and a catalogue of useful plants, minerals, magic amulets and spells.

The only non-trivial normal magic hexagon contains 19 hexagons ( the other being 1 ).

The first section, called Ars Goetia, contains descriptions of the seventy-two demons that Solomon is said to have evoked and confined in a brass vessel sealed by magic symbols, and that he obliged to work for him.

However, it contains no references to magic cows, so Chelsie's special abilities remain a mystery.

Redwall contains little practice of magic.

Chapter 2 contains the commandments against murder, adultery, corrupting boys, sexual promiscuity, theft, magic, sorcery, abortion, infanticide, coveting, perjury, false testimony, speaking evil, holding grudges, being double-minded, not acting as you speak, greed, avarice, hypocrisy, maliciousness, arrogance, plotting evil against neighbors, hate, narcissism and expansions on these generally, with references to the words of Jesus.

The tradition is based largely upon Gardnerian Wicca, in which Sanders was trained to the first degree of initiation, and also contains elements of ceremonial magic and Qabalah, which Sanders had studied independently.

Every blister that contains a Wizard includes a free Incantation Rules Booklet as well as cards that describe magic items and special spells particular to each.

The secret room contains some food and more, all the magic potions ( extra shot power, extra shot speed, extra magic power, extra speed, extra armor and extra fight power ).

John Bellairs ' classic fantasy novel The Face in the Frost contains several double dactyls, used as nonsense magic spells, such as the following:

Psilocybe semilanceata, commonly known as the liberty cap, is a psychedelic ( or " magic ") mushroom that contains the psychoactive compounds psilocybin and baeocystin.

The combination of a tale that is apparently set in medieval Europe, but which contains significant elements of fantasy and magic lends itself to use as setting for role-playing games such as Dungeons and Dragons.

He leaves the shop through a magic door at the back of the changing room and enters a world appropriate to his costume, where he has an adventure ( which usually contains a moral ) before the shopkeeper reappears to lead him back to the changing room, and the story comes to an end.

The story " A Case Of Identity " also contains two subtle references to contract bridge, including a magic spell for establishing identity called the Jacoby transfer which requires blood from " at least two hearts.