BAM Not Active

hello …

i have a problem, when i try to configurer de Autentication, the aplication show me one winwodws : BAN Feature is Not Active. Cannot modify authentication settings.

pleas, if somebody kwon what is teh reason for thees only writeme. …
so much thks. …

NOTE: my english not is perfect, but i undestand, and i hope tha yours understandme.

att, genkiro