Wake-on-LAN - Wake On Internet

Wake On Internet

The computer being woken does not know whether the wakeup signal comes from another machine on the same network or from anywhere else. If the magic packet can be made to reach a computer, it can originate anywhere (e.g., from the Internet). This can be achieved by a virtual private network (VPN), which makes the remote computer appear to be a member of the local area network (LAN). In the absence of a VPN, a computer connected to a router can be woken if a magic packet sent over the Internet is routed to it. This requires any firewall to be set up to allow entry of the Wake-on-LAN signal to a specified port. The port can be forwarded to the computer to be woken up; or some routers permit the packet to be broadcast to the entire LAN. However, some routers do not support this as they will not forward broadcast packets.