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Do clients use WPS every time when they connect to a WPS-enabled AP? Or maybe they do it just the first time and then they switch to a normal WPA/WPA2 key exchange?

If the latter, it's possible for an AP to force a client to use WPS every time?

Gianluca Ghettini
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WPS would generally only be used for the initial connection because the wireless network settings (pass-phrase/SSID) are saved on the connecting device. I don't know if it is possible to "force" clients to connect every time with WPS. If it is...I would not recommend it. WPS is insecure. A quick search for "WPS Hack" on a search engine will provide you with further information. Generally it is recommended that the WPS feature should be disabled.

Scott
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  • Thank you Scott. I was asking because facking the AP in a evil twin scenario is much more effective than the classic half pin guessing algorithm – Gianluca Ghettini Mar 13 '15 at 14:13