How to use broadcast?

Question

Computer networks

I can’t figure out how, for example, to send some text to the broadcast of my router, how it is arranged.
I tried through telnet, netcat, it didn’t work either there, I also noticed that the port is necessary, any port? Or am I doing something completely wrong and understanding? Maybe it works at another level where there is no concept of a port.
I would also like to know how to receive everything that goes on broadcast.
PS: I'm just a user and I want to see how it works, please do not judge strictly). Thanks.)

Answer 1

The broadcast address is the broadcast address of your network, and the router has nothing to do with it. Anything sent to this address will be received by all hosts on that subnet.
In local networks, it is used for technical needs, such as arp and others. It is completely incomprehensible why there is something to send manually.
If you are wondering what broadcast packets are going on the network, just look through Wireshark to see what is being sent to this address.