RADIUS attribute from rfc2869

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ARAP-Features

This attribute is sent in an Access-Accept packet with Framed-
      Protocol of ARAP, and includes password information that the NAS
      should sent to the user in an ARAP "feature flags" packet.

   A summary of the ARAP-Features attribute format is shown below.  The
   fields are transmitted from left to right.

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |     Type      |    Length     |     Value1    |    Value2     |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Value3                              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Value4                              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                           Value5                              |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Type

      71 for ARAP-Features.

   Length

      16Value

      The Value field is a compound string containing information the
      NAS should send to the user in the ARAP "feature flags" packet.

         Value1: If zero, user cannot change their password. If non-zero
         user can.  (RADIUS does not handle the password changing, just
         the attribute which indicates whether ARAP indicates they can.)

         Value2: Minimum acceptable password length, from 0 to 8.

         Value3: Password creation date in Macintosh format, defined as
         32 unsigned bits representing seconds since Midnight GMT
         January 1, 1904.

         Value4: Password Expiration Delta from create date in seconds.

         Value5: Current RADIUS time in Macintosh format.

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