Passwords must be at least 8 characters. Maximum password length must be at least 64 characters. Passwords must contain at least one digit, one alphabetic letter, one special character (such as ! @ # $ % ^ & * ( ) _ = - +), and no more than 2 repeating characters. A password history preventing the reuse of the last 6 passwords. A password history preventing the reuse passwords for a period of at least 6 months.