18 May
2020
18 May
'20
3:57 p.m.
thank you, that was the/an answer I was looking for.
On 5/18/20 7:51 AM, Jonathan Billings wrote:
On Sun, May 17, 2020 at 07:46:00PM -0600, R C wrote:
what port does ether-wake use? (I believe it is port 9? but not sure).
The 'ether-wake' command in net-tools doesn't use a port at all. It's just a raw packet of EtherType 0x0842 as the so-called "Magic Packet" https://en.wikipedia.org/wiki/Wake-on-LAN#Magic_packet
For example, if you were to run:
(assuming interface name 'eth0') # tcpdump -i eth0 ether proto 0x0842
You'd see the ether-wake command's packet. If you strace the process, you'll see the socket is created as socket(AF_PACKET, SOCK_RAW, htons(0)).