Messages

Which Wifi-API you would suggest for this project please? Any recommendations?
Please note that I am in the German area, if this should have any meanings.

I'd agree with Demusman about the switch. On the Protectli use one port for the WAN and another for the LAN and connect it to a switch and all the devices to one, or more, switches you'll have a more simple configuration with that.

That means though

4-port Protectli vp2410 model w/ quad-core CPU
|                               |                                               |                              |                                       
wan/        Unmanaged/managed switch                     empty                     empty
modem    desktop computer,
               wifi-AP and other clients like
               Apple TV, Blu-Ray Player and so on

Am I correct

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Ich habe Interesse mir eine OPNsense Firewall zu basteln. Bin dazu wie verrückt am googeln, aber alles was ich zum Thema Glasfaser und OPNsense gefunden habe hat mich nur noch mehr verunsichert.
.......

Schau dir mal den (Link) von Dennis an.
Grundkenntnisse ganu gut erklärt.
https://schroederdennis.de/allgemein/fritzbox-bridge-mode-aktivieren-und-genau-erklaert-6591-6660/