this post was submitted on 04 Mar 2024
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I am worried that there is not really a benefit of doing that, just more noise and energy consumption.

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[–] [email protected] 1 points 8 months ago* (last edited 8 months ago) (3 children)

Isolated guest networks I get, but isolating guests from other guests on the same subnet/isolated net is what I haven't seen.

[–] [email protected] 2 points 8 months ago

If there's an option on the AP to not permit link local routing within a vlan/ssid, that will force all traffic up to the firewall. Then you can block intrazone traffic at the firewall level for that vlan.
I've seen this in Meraki hardware where it's referred to as "client isolation". Ubiquiti might be able to do this too.

[–] [email protected] 2 points 8 months ago

The APs know who the Wi-Fi clients are and just drops traffic between them. This is called client/station isolation. It’s often used in corporate to 1) prevent wireless clients from attacking each other (students, guests) and 2) to prevent broadcast and multicast packets from wasting all your airtime. This has the downside of breaking AirPlay, AirPrint and any other services where devices are expected to talk to each other.

[–] [email protected] 1 points 8 months ago

I used to have a Netgear Nighthawk router/AP I bought from Costco, and if I remember correctly, its guest network automatically isolated guests from other guests. This router didn't support VLANs so I think it was just a bunch of firewall rules.