O Defending Against 80211 Frame Analysis

As with RF spectrum analysis, frame analysis is a passive exercise. The attacker is not sending out any 802.11 frames, only passively receiving whatever AP- or station-transmitted frames come its way.

One possible method of interfering with some portion of the frame capture during the sniffing session that must precede the frame analysis is sending out crafted frames that exploit a denial-of-service (DoS) vulnerability against the chipset/driver combination the attacker is using. However, this is difficult, to say the least, because (1) you would have to know first whether an attacker was around (remember, he or she is running passive silent in the first place) and (2) if any legitimate users are running the same chipset/driver combination as the attacker, you might accidentally target them instead if you wrongly guessed the MAC address of the station you wanted to attack.

Realistically, the entire 802.11 specification has to be rewritten with an eye to either encrypting the frame headers and/or performing some sort of mutual authentication/ verification against a frame sender. However, that is a matter for the IEEE to settle and, for the foreseeable future, attacks targeting the management and control frames of the IEEE 802.11 specification are likely to continue with a substantial degree of success.

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