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  3. Wake-on-LAN (tutorial)?
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However, Wake-on-LAN is a specific operation because it is based on using the hardware technology to wake up computers, so it has a few specific requirements. In this chapter, you can see how to configure and use Wake-on-LAN. Wake-on-LAN WOL is a technology supported by hardware that allows waking up computers by sending a specific network packet to them.

To uniquely identify the target computer, a sender uses the unique MAC address of the network card of the receiver. Besides, to wake up a computer, the receiver should listen to network packets, so the network card should be turned on even if you turn the computer off. If you plan to use Wake-on-LAN, you need to enable it on the remote computers by following these steps:.

Wake On Lan

So you want to have your machines go to sleep when they are not working and then be able to remotely connect to them and have them automagically respond? This is cross platform and can potentially work on any computer.

The Magic Packet: How Wake-on-LAN Works

The computers can be in a totally powered off state but still connected to the power outlet and woken up all the way to a simple stand-by mode. According to Wikipedia , Wake-on-LAN is an Ethernet computer networking standard that allows a computer to be turned on or woken up by a message. The message is usually sent by a simple program executed on another computer on the local area network. The Automatic WOL daemon will send out a periodic wake on lan packet at the intervals you specify.

This may be useful to keep a system online most of the time even if it is turned off. For Interval you can enter a value in seconds as low as 15 seconds and as high as seconds 1 day. Host name should be the broadcast address for your LAN. If you do not have a BIOS that requires this form of password then you can leave the box blank or type in You likely will not need to worry about this unless the system you are attempting to send the WOL packet is on another subnet or you are trying to monitor the packets.

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