I'm trying to set up Wake on LAN/WAN for my PC, but I'm hitting some roadblocks. Here's what I've done so far: I configured my MSI motherboard to support WOL, turned off Windows fast startup, and set up port forwarding for UDP on port 7 to my PC, along with a local static IP through my ISP. I'm using an app with the MAC address and local IP for WOL and another rule with the MAC and public IP for WAN.
Here's the situation: WOL works perfectly when I'm on the same WiFi as my PC. If the PC is shut down for less than two hours, I can wake it up from anywhere. However, after it's been shut down for over two hours, I can't wake it when I'm off my network. When the PC goes into sleep mode, I can still wake it, regardless of my network location.
I suspect there might be an issue with my internet box, but I'm not sure. Is there something I'm missing with the configuration? Also, is it okay if I keep my computer in sleep mode all the time? Thanks for any help!
2 Answers
Wake on LAN is primarily designed to work within the same local network, and it's typically not recommended to try complex workarounds that could compromise network security. If you find it's useful, you might want to consider a dedicated WOL device. I’ve been using a Tuya PCIe card that connects to my motherboard and allows me to control power remotely via an app. Also, keeping your PC in sleep mode is totally fine and won’t damage it. I’ve done that for years without any issues!
It sounds like you're in a bit of a pickle! Usually, the problem comes from the need for a device within your local network to send WOL packets. So, after your PC has been shut down for over two hours, it's likely that the settings for port forwarding on your router may not be sufficient for waking it up remotely. Just to clarify, your internet box is indeed the device responsible for forwarding those packets externally, and you might need to check its settings to ensure they're correctly configured for WOL.
But if it works for shorter durations, doesn't that mean the forwarding is set up right?

Thanks for the tip! So I should avoid risky rules on the router then?