They are 9E:65:F9:0E:29:FB and 192.168.0.255 in my case. You can use the ifconfig command to find out that information.

It was always convenient like that until I got sudden disconnection last month.

Suddenly anything stops working, and I wasted several hours hopelessly trying to fix it.

When I went home, I figured out that the electricity in my apartment was very unstable due to a small construction upstairs.

That is like having the servers power switch with me all the time.

It would be so cool, especially when Im away for an extended period and dont want to waste money on the energy bills.

My Network with the Wifi Repeater to provide wired connection to the server, and an insider to help me wake the server through the internet Step 1: Satisfy hardware requirements In most motherboards, there is a function called Wake-on-Lan (WOL).

WoL works by sending a packet of data called a Magic Packet to a target machine.

When the packet is received, the target machines network interface wakes-up the rest of the computer.

However, I recognized that I cannot wake-up my server through its wireless interface (Im using a USB wireless adapter).

It turned out that the Magic Packet must be sent to the motherboards built-in Ethernet port since its the only thing awake when the whole machine off.

I fixed the situation by using a Wifi Repeater, and connect it to the server through an Ethernet cable.

You can skip this step if your machine is using a wired connection.

As the name suggested, WOL is designed to wake-up a machine through a local network.

So you have to be in the same network with your target device to make it work.

First, you have to turn on the WOL feature on your motherboard.

Enter the BIOS setup and look for Wake up on PCI event or Wake up on LAN and enable it.

Second, on Ubuntu, you have to know your default interface, check if it supports WOL, and turn on the feature.

The whole process can be done as following: route Get name of the default interface, for example: eth0 sudo ethtool eth0 Look for Supports Wake-on: g line, which means WOL supported sudo ethtool -s eth0 wol g Enable WOL To make the setting sustains after rebooting, you need to add the last command above to the interfaces configuration in etcnetworkinterfaces.

Now, lets test it.

You can use a mobile app called Wake-on-Lan in Android (there are similar apps for iOS, but I havent tested it).

It can automatically scan your local network and list all of the connected devices.

You just search for your machine, add it, and then you can send the magic packet to it whenever you want.

Try to turn off your target machine and wake it up by your phone.

They are 9E:65:F9:0E:29:FB and 192.168.0.255 in my case.

You can use the ifconfig command to find out that information.

What Is Wake For Network Access On Mac