![]() ![]() The WoL protocol is simple in theory, but in practice, it turns up to be a challenging thing to set up. And yes, it waits for the magic packet when the entire system is completely turned off (just don’t remove the plug from the socket). If your LAN-card receives a magic packet with its MAC while waiting for it, the LAN-card tries to turn the computer on via ACPI. The magic packet is a UDP datagram that should begin with six 0xFF bytes, then contain the MAC-address of your target PC repeated 16 times. ![]() All you need to do is to send a so-called Magic Packet to your network’s broadcast IP (e.g., 192.168.1.255 or even 255.255.255.255) and port 9. If your router’s configuration is flexible enough, you can even catch that packet from the Internet and broadcast it as required. Wake on LAN (WoL) is a protocol that allows you to turn a PC on by broadcasting a specially formed packet into your local network. ![]()
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