I'm trying to develop a discovery procedure based on how a 3rd party device works... For discovery, I need to do a UDP broadcast to a specific port, and in turn all of the devices out there, will send a UDP response from that port, back to the (ephemeral) source port from the original broadcast.
For example:
192.168.1.149:port --> 255.255.255.255:9999 192.168.1.149:port <-- 192.168.1.130:9999
How do I configure firewalld to enable such behaviour?
Thanks Fulko