Woly sends a special network message called a magic packet which allows a computer to be turned on.

The computer that receives this packet must have a motherboard and a Network Controller (NIC) that supports WAKE-On-LAN (WOL). Most modern ATX motherboards have an on board NICs that supports WOL.

You need to know the MAC address of the destination computer to be able to wake it on LAN. It is also possible to wake a computer over Internet. A computer connected to a router can be woken if a magic packet sent over the Internet is routed to it. If you're working
outside of your local network, you'll also need to know your external IP address.

By default the packet is sent to UDP port 9. You can change the port number to another if needed.

Usage: wol.exe mac_address [ip][:port]
Send a Wake on Lan magic packet.

Arguments:
mac_address: Target MAC address with optional delimiters (-, : or space) E.g. FF-25-14-36-5A-FC, FF2514365AFC
ip: Target IP address (optional) E.g. 192.168.1.25
ip:port: Target IP address with port number (optional) E.g. 74.125.39.103:9

The license of this software is Free, you can free download and free use this network utility software.