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1 month agoI reworked my entire home network. Going from an Asus router to an opnsense firewall, just to put the HP printer and the LG TV on a VLAN with absolutely no internet access.
These two poor guys ping each other every day, in the hopes one of them gets a connection.
Whether you can access these devices or not depends on your firewall rules.
The usual (very simplifed) setup is as follows
VLANs:
Firewall rules:
VLAN_Trusted: Can access everything, WAN (internet) as well as devices on VLAN_Untrusted and VLAN_IoT. Usually, your PC or smartphone is here
VLAN_IoT: can only access WAN (internet), but none of the other VLANs, usually connected devices, like smart appliances that you control via their dedicated apps, like Philips HUE lamps, etc
VLAN_Untrusted: Can not access anything. Usually devices that you don’t want to allow to access anything, lika a TV, or a printer to prevent automatic firmware updates.
Some people also hav a VLAN_Guests, which is similar to IoT, where devices can only access the internet.
I hope this helps