wake on lan

Hi, I am wondering, if it is possible to make a freebsd server fall asleep like when you close the display of a laptop making the machine switching into stand-by. On the other hand, is it possible to resume a freebsd server using WoL (wake on lan)? Does anyone have experience?

I cannot seem to get WOL working with FreeBSD on my server based on a ASRock B250M Pro4 board. In the UEFI Chip Set Configuration of the board, I enabled PCIe/PCI Devices Power On. Actually, when I start the system into the UEFI settings, and then by using the power button directly switch it...