Freeradius +LDAP + Samba integrates to Active Derectory

[John]

Hi all,
 
We deploy freeradius integrated to Active Directory, but the AD enabled "Require signing" option (see the attachement).
 
net join is OK after we set "LDAP SASL wrapping" to 'sign'. But LDAP search failed.  Is there a way to let LDAP search work? Can someone show me some reference or guide?
 
Thanks,
John
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freeradius.org/pipermail/freeradius-users/attachments/20130412/5e49ea54/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: LDAP SASL wrapping.JPG
Type: image/pjpeg
Size: 32339 bytes
Desc: not available
URL: <http://lists.freeradius.org/pipermail/freeradius-users/attachments/20130412/5e49ea54/attachment-0001.bin>