System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP)

Generic Directory Server Requirements

To support Solaris 9 LDAP clients, the server, regardless of what brand, must support the LDAP v3 protocol and compound naming and auxiliary object classes. In addition, at least one of the following controls must be supported.

If using pam_unix, the server must support storing passwords in UNIX crypt format.

If using TLS, the server must support SSL or TLS.