Comment by pdonis
13 hours ago
So if you're running multiple SSIDs on a single router, but all of them use encryption and require a passphrase (i.e., none of them are open), the attacks you are describing don't work?
To clarify, the passphrase for each SSID is different, and the question is whether, first, an client that doesn't know any of the passphrases can somehow attack other clients who do, and second, whether a client that knows the passphrase for one SSID can attack clients connected to the other SSID (which has a different passphrase)?
My interpretation:
First, they can't attack a WiFi access point for which they do not know any password(s). Thus your multi-SSID access point with multiple passwords is "safe" from this particular attack.
However, second, they can attack an access point for which they know any password, gaining access to clients on the other SSIDs. This means your security is now effectively only the security of your worst SSID's password. It also may defeat your purpose in having multiple SSIDs/passwords in the first place.