I am looking for a software or combination of software running on Linux to manage network guest passwords for a semi public facility.
Semi-public means a facility owned by a compound that can b e rented. There is a WiFi connected to fiber (100Gbit/s) that can be shared to visitors but we do not want to have publicly open since the facility is centrally located.
What we try to achieve is:
* In advance generate passwords for the period of time (some months) and let the system change password Fridays and Mondays. Someone need to know the expected password in advance
* Have a WebGUI from LAN but not from WAN
* Can be installed on a Raspberry Pi 3 with Linux possible located between internal public LAN and the router. (Will a Raspberry Pi 3 be able to cope with HD streamed movie?)
* Users without a ticket shall preferably be redirected to a web page on the Raspberry
The alternatives I have found so far either looks abandoned or I cant figure out if they help (like hostapd)
Thankful for all pointers or ideas.