Wake up from Lan (WOL) is a standard system network, which is let on or the same as waking up with a message network to the computer. This message usually by a simple program on a system other on the same local network will be sent. Waking up from the network, or the same Wake-on-LAN will briefly WOL is also called.

In cases where the computers have Network, WiFi, awake. can be from the pack of so-called Wireless Multimedia Extensions, or WMM, to send a message. Another name for this method of wake-up via wireless Wake on Wireless LAN or WoWLAN. This method in the implementation of old times existed.