communicate multiple networks
I request your collaboration, this is the network that I have in my house
The problem is that I want to communicate the different LAN networks with the WAN and between them, currently I have an internet provider to movistar fiber optic 192.168.1.0 and 2 decoders, in front of the modem I have a pfsense server, from there the entire lan network is clear 192.168.100.0 and I delivered the internet to 2 more floors apart from my second floor 192.168.100.1 and third floor 192.168.100.3 with other routers. I clarify that I separate them with other networks because the routers require me to have a WAN and create an independent LAN to enable the guest Wi-Fi network.
I would like to know how to communicate the networks of the 2nd and 3rd floor with the main one, besides that they can also see the Movistar WAN network, because the iptv decoders for some reason are not on the same network as the modem they do not provide tv.
I have been reading about a NAT from one network to another or creating vlans but the truth is I am a bit confused, what do you recommend doing so that the networks of the 3 floors can be seen and I can share a Linux server that I have and also be able to see iptv
Thanks for any help you can give me.
Sorry if I posted on the wrong side but didn't know where to ask.