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

The magic packet contains the MAC address of the destination computer.

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.

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.

He speaks your language too, for he is the grandson of a chieftain on Taui who made much magic and was strong and cunning.

As Lipton puts it: `` The Eros is felt in the magic circle of marijuana with far greater force, as a unifying principle in human relationships, than at any other time except, perhaps, in the mutual metaphysical orgasms.

The magic circle is, in fact, a symbol of and preparation for the metaphysical orgasm ''.

that is, he is suspect, guilty, punishable, as is anyone in Mann's stories who produces illusion, and this is true even though the constant elements of the artist-nature, technique, magic, guilt and suffering, are divided in this story between Jacoby and Lautner.

Now the Stone Harbor bird sanctuary, 31 acres of magic attraction for exotic herons, is threatened, but the battlefront extends far beyond our state.

There is no such magic in man-made laws.

We found that wherever you can use two teams on a job, five men, not four, is the magic number ''.

And where is `` home '', that magic place of the heart??

But, again, we have no real evidence on this from that quarter until the close of the ninth century A.D., when an Arabic scholar, Tabit Ibn Korra ( 836-901 ) is said to have discussed the magic square of three.

If one takes the middle number, 5, and multiplies it by 3 ( the base number of the magic square of three ), the result is 15, which is also the constant sum of all the rows, columns, and two main diagonals.

* Psyche is used for feats of willpower or magic.

However, in general, the books only feature mental battles when there is some reason for mind-to-mind contact ( for example, Trump contact ) and magic or Trump is involved in all three of the above conflicts, so it is not clear whether Zelazny intended his characters to have such a power ; the combination of Brand's " living trump " powers and his high Psyche ( as presented in the roleplaying game ) would have guaranteed him victory over Corwin.

Armida is a tale of love and duty in conflict and is saturated in magic.

Abracadabra is an incantation used as a magic word in stage magic tricks, and historically was believed to have healing powers when inscribed on an amulet.

The word is thought to have its origin in the Aramaic language, in which ibra ( אברא ) means " I have created " and k ' dibra ( כדברא ) which means " through my speech ", providing a translation of abracadabra as " created as I say ", thus its use in magic.

In the Nintendo / GameFreak video game franchise " Pokémon ", there are three creatures in the same evolutionary chain named Abra, Kadabra, and Alakazam ( the third of which is also an alleged magic word used by stage magicians ).

Abra Kadabra is the name of a DC Comics villain, who originally uses futuristic technology to create effects that appear magic to present-day people, and later gains actual magic powers.

However, this incident actually sparked the research movement, led by Paul Lazarsfeld and Herta Herzog, that would disprove the magic bullet or hypodermic needle theory, as Hadley Cantril managed to show that reactions to the broadcast were, in fact, diverse, and were largely determined by situational and attitudinal attributes of the listeners.

In addition to eight appearances on Saturday Night Live between 1981 and 1985, Anderson had a recurring guest role as con man " Harry the Hat " on Cheers, toured extensively as a magician, and did several magic / comedy shows for broadcast, including Harry Anderson's Sideshow ( 1987 ).

In a television broadcast hosted by Aurora, she attempts to corrupt viewers but is ultimately defeated by Marnie who fires a magic archery arrow at the book, destroying it, killing Toledo and the Dawn Queen's darkness in the process, but leaving Aurora alive.

In 1957 at the age of 62 he appeared on one of the few magic television shows broadcast at that time, Festival of Magic.

The program, broadcast as part of The Pac-Man / Rubik, the Amazing Cube Hour block on ABC, featured a magic Rubik ’ s Cube named Rubik who could fly through the air and had other special powers.

Jackie Shroff was a judge on a magic show called India's Magic Star broadcast on Indian channel Star One on a weekend.

At the end of each broadcast, the hostess would look through a " magic mirror " – actually an open hoop with a handle, the size and shape of a hand mirror – recite the rhyme, " Romper, bomper, stomper boo.