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GCP: (google-copy-paste)
Wake-on-LAN normally uses UDP ports 7 and 9.
The packets are sent to the special broadcast address of the LAN, so it will be received by all network-attached hosts, rather than by a specific host.
The MAC address is used to identify the particular host that should "Wake Up"
If the PC is Wake-on-LAN enabled it will be listening for packets on the above ports.
If the magic packet is coming from the internet (WAN) then any firewall must be set up to allow entry of the Wake-on-LAN signal to a specified port, which can be forwarded to the computer to be woken up
Some routers permit the packet to be broadcast to the entire LAN.
Some routers do not support this as they will not forward broadcast packets. |
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