How to find out who and when connected to Wi-Fi?

Question

network hardware

You need to know which device connected to the router when and at what time.
On the web face there is a system log, but there is no poppy address and nothing useful.

Answer 1

If we are talking about Wi-Fi, then you can configure authorization through Radius.

Answer 2

Look in the firmware to see if the router can write log files to a remote server. Then it would be possible to give him a place to write logs ...
Well, or really do wifi authorization through your own Radius Server
In general, this is a homemade piece of iron for 1k rubles ... he can’t do anything and won’t, except to distribute more / less Internet in 100mb ... and that's not a fact)
if you need something adequate - look towards Zyxel or Mikrotik