The Wi-Fi Alliance proposed WPA as a middle of the road measure to replace WEP pending the accessibility of the full IEEE 802.11i standard. WPA could be executed through firmware overhauls on remote system interface cards intended for WEP that started sending as far back as 1999. In any case, since the progressions required in the remote passages (APs) were more broad than those required on the system cards, most pre-2003 APs couldn't be moved up to help WPA.

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