I've made a lot of progress as an OpenWrt newbie thanks to all the help I've gotten in this forum. I hope this is the last issue I have with regards to getting set up.
My primary goal is to separate the various computers on my home network as much as possible. I set up VLANs for each router port and did firewall rules so they can't talk to each other. As mentioned in several other threads I started I have the WiFi separated, and it is only used with one computer, and I don't want it to be able to communicate with the others, or vice versa.
Here's what I have done, and what my questions are so I can finish up. I unbridged the radios from the lan, as I don't want the wireless associated with any physical router ports. I created a network, let's say 'WiFi', and added the 2.4 GHz radio to this network and created a firewall zone for this. I also have a 5.0 GHz radio, but I do not plan on using this. I might some day down the line, but it's unlikely (super slow Internet connection, so no real need to). Right now the 5.0 GHz is disabled.
Here are the things I am trying to sort out.
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Is there any benefit to creating another network for the second radio, or should I just put it in the same network as the 2.4 GHz radio? Right now I have different SSIDs for each (wifi24 and wifi50, for example). I think in the same network they need the same SSIDs? And if I put them in the same network, will I have to bridge them?
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I came to OpenWrt so I could do VLANs. But as I am currently set up, I don't have the wireless in a VLAN, like the default bridged to lan configuration. If I set up a VLAN and do not link it to any physical router port, can it be used with the wireless, or is that a nonsensical question? Would it even be beneficial? I was under the impression I wanted everything in a VLAN, and now I have the wireless not in a VLAN. Or can this only be done by bridging to a physical port on the router? If so, then I would basically just 'sacrifice' a port for this purpose, and not use it so I have the isolation I want.
Anything here that would help me understand this would really be appreciated. I've read all the documentation and forum posts I could, but something this simple and it is just eluding me...