wolz/README.md

Wolz

• Broadcast Wake on Lan (WoL) magic packet to network devices in the local network.
• WoL only works if the target network interface supports it and is not in low power mode. Check arch wiki on this subject to setup your device to wakup

Usage

Run wolz to view the help text.

Troubleshooting

This tool broadcasts the magic packet to the limited broadcast address 255.255.255.255 and port 9.

Install tcpdump to inspect the network traffic published to the limited broadcast address (255.255.255.255) and port 9

$> # Update `enp42s0` to your interface name.
$> # To find out the interface to which the kernel 
$> # routes the packets to, do
$> # ip route get 255.255.255.255
$> sudo tcpdump -i enp42s0 udp and host 255.255.255.255 and port 9 -n -XX
$>
$> # Sample output for mac 04:7c:16:6e:c0:2f 
0x0000:  4500 0082 6153 4000 4011 ceb6 0a60 0002  E...aS@.@....`..
0x0010:  ffff ffff 8bd0 0009 006e b739 ffff ffff  .........n.9....
0x0020:  ffff 047c 166e c02f 047c 166e c02f 047c  ...|.n./.|.n./.|
0x0030:  166e c02f 047c 166e c02f 047c 166e c02f  .n./.|.n./.|.n./
0x0040:  047c 166e c02f 047c 166e c02f 047c 166e  .|.n./.|.n./.|.n
0x0050:  c02f 047c 166e c02f 047c 166e c02f 047c  ./.|.n./.|.n./.|
0x0060:  166e c02f 047c 166e c02f 047c 166e c02f  .n./.|.n./.|.n./
0x0070:  047c 166e c02f 047c 166e c02f 047c 166e  .|.n./.|.n./.|.n
0x0080:  c02f                                     ./

If you have VPN enabled, depending on the configuration the kernel might route it to the tunnel interface, and the tool will not work.

To debug TCP packets intended to wolz-daemon, run

$> sudo tcpdump -i lo tcp and port 21367 -n -XX