I am attempting to conduct a deauthentication attack on a stand alone AP using Aircrack-ng. Im using an ASUS 802.11ac router and using aireplay-ng to send the deauthentication packets.
But when conducting the attack whilst the router has any form of security enabled, WPA/WPA2, the deauthentication packets are sent, but don't seem to be accepted by the AP, meaning the stations stay authenticated.
However, if I take the security off the AP, the attack works successfully and the station is deauthenticated from the AP and a further authentication and association request is sent.
I am fully aware of 802.11w, that protects the management frames and would prevent deauthentication attacks from occurring, but this AP does not support PMF, so I cannot find a reason why the stations are not being deauthenticated when the packets are sent to the AP.
Am I missing something obvious as to why the attack isnt being successful? or does anyone have any further knowledge about WPA/WPA2 that would prevent the attack from working?