From memory, wi(4) can be configured with WEP, or with open networks, The driver does not support WPA, WPA2, WAS, or any other 802.11 encryption/authentication scheme.
If you must use open networks or WEP, it is commonly recommended to add additional encryption services, as neither of these provide secure communication, and are open to both passive interception as well as active man-in-the-middle attack.
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