this post was submitted on 27 Aug 2024
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most properly configured public wifi will enable client separation, of course that potentially still leaves lower level protocol and radio attacks.
I have no idea what this client separation is.
As far as I know there isn't really any client separation on wifi. It's a shared medium.
At least I don't see anything preventing you from reading someone else traffic. So anything unencrypted on a wifi is also accessible to any other clients.
I had tools more than 10 years ago that could automatically hijack session cookies on wifi for anybody connected and not using https.
no worries.
the net effect of client separation is that your device sees no other layer 2 devices on the wlan besides the gateway. this would typically be enforced at the frame level by the APs and is separate from any radio privacy cryptography.
a properly configured wireless setup would assume every client is compromised and would also disallow local client-client via source routing or proxy ARP or any other escape options. 100% secure? probably not, but its a non trivial barrier that would have to be circumvented.
as with e.g. broken WEP years ago, there are still options to mess with clients at ~Layer 1 but I dont believe its currently as trivial as it used to be.
Good explanation, a note that most public WiFi will use client separation. Macca's, starbucks, airplanes etc you will only ever see your device and the gateway. (More for other people that are reading, I assume you know this 😄)