Which Captive portal should be used for the following tasks?

Question

Computer networks

There is a network. It has a server on Windows Server 2008 R2
. The server has two network cards - one LAN to another Internet.
From the server, respectively, the Internet is distributed through Routing and Traffic Inspector.
Some of the IPs on the network computers are set statically (manually, don't ask why, it's necessary), some are distributed via DHCP from this server. Clients who connect via Wi-Fi receive an IP address via DHCP (computers with statics also come in from the same physical access points).
Task:
It is necessary for guests (the range of IPs issued to them is known, connection to a Wi-Fi point without a password) at the first entry to issue a registration page (preferably through social networks) and after authorization they already received access to the Internet.
As an option: dhcp issues settings to another PC in the set, which may be a PC with Ubuntu. And there is already some kind of Captive portal. But that PC will have one network card