@BrechtSchamp wrote: A hidden SSID still sends out beacon frames, it just doesn't contain the SSID name. Note that hidden SSIDs don't add much security. You just have to wait untill an actual client comes by and connects to know the SSID name: https://ethicalhackingblog.com/uncovering-hidden-ssids/ The problem is (particularly for roaming) is that some drivers (some Intel ones for sure) will not send probe packets on DFS channels, so unless there is a device already using the channel in question the client device will simply never find the SSID on that channel. On it's own that's enough reason never use a hidden SSID, the fact that they are useless is (now to me) fairly minor compared with the strange issue they can cause. I think I still have my logs from back in 2005 when I used to log Access points (including the hidden ones) from the top deck of a London bus and that was when the hide your SSID and limit to known MAC addresses made you super secure. BTW the customer made up the bit about requiring the SSID to be hidden to get PCI compliance in the EU.
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