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How to activate Wake on LAN programmatically

Is there a way to programmatically get to the BIOS and enable the Wake on LAN feature for those machines that support it?

Ideally, the solution will be cross-BIOS, but it will be good to hit each of the main suppliers with separate solutions.

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BIOS configuration is what the OS deliberately limits to avoid virus problems (many BIOS viruses back in a day!).

You need to look at the system management interface to see if it is available at all. You will probably have to work in ring0 on windows (or root / kernel on linux). In addition, you will most likely need to learn how to do this, directly access the hardware, study and store a database of the most common manufacturers and types of BIOS, and even then they will not be able to cover all of them.

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SMBIOS can help?

I know that I had a utility for reading BIOS from a regular Windoze program once, at my previous work.

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I think you will find that Wake on LAN is a CMOS Setup option, and therefore is not programmed through the hardware agnostic interfaces of the OS.

Dell Inc. provides customers with a set of OpenManage utilities for remote management of settings on their client computers. Some links:

Dell openmanage
Wikipedia article

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There are several steps to enable Wake on LAN. First, it must be enabled in the BIOS, and then it must be enabled on the network card itself.

On Windows, you can find the settings in the advanced settings dialog for your network adapter. For Linux, you can use the ethtool command.

Use ethtool eth0 to display the current status for the eth0 interface:

 Settings for eth0: Wake-on: g

Use ethtool -s eth0 wol XYZ to set this parameter, but remember that not all cards support all WoL methods and that some cards remember the settings upon reboot, while others do not (then you need to add this command to startup scripts).

  wol p | u | m | b | a | g | s | d ...
     Sets Wake-on-LAN options.  Not all devices support this.  The argument to this option is a string of
     characters specifying which options to enable.
     p Wake on phy activity
     u Wake on unicast messages
     m Wake on multicast messages
     b Wake on broadcast messages
     a wake on ARP
     g Wake on MagicPacket (tm)
     s Enable SecureOn (tm) password for MagicPacket (tm)
     d Disable (wake on nothing).  This option clears all previous options.
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Source: https://habr.com/ru/post/921809/

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