What settings are needed to make a network from a router and laptops?

Question

Computer networks

Is it possible to create a network by connecting one laptop to the router via a cable, and the rest of the laptops via Wi-Fi to the network?
And what settings are needed for this?

Answer 1

Usually none, ports inside the network are open, IP addresses are static, and of course "white" from inside the network.
All that is needed (I talk about TCP and protocols based on it as being used in 99.99% of cases) is that there is one server where you can programmatically get an IP like 192.168.xx, and a "client" is installed on other PCs, then there is a program that will somehow know this IP, and connect to it.
Ethernet or Wi-Fi - it doesn't matter, TCP is abstract from them.
True, not everything is so simple, the same problems still remain as on the Internet, a rather complex algorithm is needed for reliable data transfer, so that if the transmission time coincides with the "break", then there will be no "departure" and, if possible, there will be no data loss , but on a local network this is much less common, therefore, with a certain risk, it can be neglected, while on the Internet a too simple server may not work for a day.
Perhaps the use of HTTP instead of TCP will greatly simplify the task, since on the client side there will be a library that abstracts from TCP, and on the server there will be a ready-made Web server like Apache or nginx.

Answer 2

Instructions for the router are no longer fashionable to read?