Thank you for your recommendations.
Unfortunately, I don’t know anything about pfSense or OPNSense. How much effort does it take to become familiar with it and what costs do you have to expect for the basic hardware?
I would like to design the structure independently of the provider. In the meantime, I saw that firewalls with 10Gbit/s connections are rarely offered or are very expensive.
As a start, I imagine using a Layer 2+ switch in order to at least be able to separate the different networks and since this switch supports the mentioned IGMP snooping and multicast. This switch can also be used for 2.5Gbit/s or 10Gbit/s in the future. Specifically, I looked at the following switch “Netgear MS510TXM”: [https://www.downloads.netgear.com/files/GDC/MS510TXUP/MS510TXUP\_MS510TXM\_DS.pdf](https://www.downloads.netgear.com /files/GDC/MS510TXUP/MS510TXUP_MS510TXM_DS.pdf)
Is this a correct approach or am I completely wrong here, apart from the solution with pfSense/OPNSense?