Sorry for the banal question, I'm not an expert...
I have seen many guides that explain how to create a wireless network for guests, it is not clear to me what the best solution is.
Someone use a VLAN for the bridge guest others instead create a rule in the firewall for isolate the main bridge from that used for the guest network.
In your opinion, what is the best solution and which it occupies less CPU.
VLAN or a firewall rule?