Selfhosted
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It looks like you’re not understanding what a VLAN is. It is a virtual LAN, it’s near physical separation of traffic.
In your example, your IoT devices and HA would sit in their network. Your PCs and phones on another, reaching outside through PiHole. Your *arr suite in a third, only routed outside through a VPN. You get the gist. And then you set rules on how these subnets talk to each other in a router, like you would do if they were physically separate.
Yes, that is why I gave an example of how i thought it worked, but i have a single physical server with *arr suite, HA, reverse proxy, and all of my other services.
If it is a near physical separation of traffic, how can 1 device with 1 MAC and 1 IP be isolated on multiple parts of the VLAN?
You would expose a single port to multiple vlans, and then bind multiple addresses to that single physical connected interface. Each service would then bind itself to the appropriate address, rather than "*"
~~Oh, it can’t. You’d need more ETH ports.~~ One for each VLAN a device is connected to. You can find multiport low speed expansion cards for cheap, even more so used. Many people think it’s a worthy investment. You learn a valuable skill and have a more resilient, secure network.
Of course that assumes you have spare expansion connectors on your server. I might be wrong, but I’m pretty sure you can find ETH boards for that “Wi-Fi” M.2 connector, so that’s an option if you don’t have PCI. That way you can at least segregate Internet and local traffic.
Edit: apparently you can. Time for me to update my knowledge.
Yes, you create virtual nics tied to the physical one.
Thanks, I’ll look into it!