I am trying to make a custom router login page. I want the user to ridirected to the login page when he/she connects to the wifi network. How can i make such a login /registration system?
closed as too broad by joeqwerty, HopelessN00b, Sven♦ Jul 2 '17 at 17:59
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What you are looking for is called captive portal.
Wikipedia describes some methods for implementation:
A PHP implementation can be found here: http://www.andybev.com/index.php/Using_iptables_and_PHP_to_create_a_captive_portal
Very popular implementation is chillispot (there is also a good description of the technology in the backend):
Often you will also need a capable router e.g. a device that uses open-wrt: https://en.wikipedia.org/wiki/OpenWrt#