Auto Shutdown Manager Server supports Wake on LAN (WoL) on remote networks by using so-called directed broadcasts or WoL proxies. Because of the potential security issues of directed broadcasts, WoL proxies are the technology of choice in almost all scenarios when it comes to waking remote computers located outside of the local network.
Every computer that runs the Auto Shutdown Manager client can be used as a WoL proxy. In many cases, small PCs or local servers running 24/7 can do the job on remote locations.
However, if no such server or PC is available, you now can use one of the affordable and low-power consuming Raspberry Pi® devices.
Download the software and a short manual here.