How to organize a welcome / social network page on a Keenetic or MikroTik wifi point?

Question

WiFi

An open wifi network, it is necessary to show the user a welcome page after connecting the user, or open access to the network after a certain trigger, like / subscribe / repost.
Are there ready-made solutions, preferably free or where to read?
article one
article two
article three

Answer 1

https://asp24.ru/mikrotik/sozdanie-i-nastroyka-hot...