Wake-on-LAN

What it does: sends a Wake-on-LAN 'magic packet' (broadcast UDP) to power on a machine by its MAC.

Reaching another subnet: the broadcast box defaults to 255.255.255.255 (this segment). A picker offers each of this machine's local subnet directed-broadcasts, and for a subnet you're NOT on you can type its CIDR (e.g. 10.30.40.0/24) and 'Compute broadcast' to fill in that subnet's directed broadcast — a router set for 'ip directed-broadcast' can then forward it to wake a host on that remote VLAN.

Safe to run: yes — it only broadcasts a wake request; there's no reply, so 'sent' doesn't guarantee the host woke.

Reading results: nothing to read. Requirements: the target must have Wake-on-LAN enabled in BIOS/UEFI and its NIC, and be reachable by the broadcast you chose. Use the device's wired MAC.

These are the Windows and Linux 1.3 guides, the same help that ships inside those apps. The Mac app carries its own in-app help; where macOS differs, see Privacy and FAQ. All docs. Spot something unclear? Tell us.