Because you will be working with Sun Java System Directory Server and Sun Java System Message Queue, you might need to refer to their product documentation:
Sun Java System Directory Server documentation http://docs.sun.com/coll/DirectoryServer_04q2
Sun Java System Message Queue documentation http://docs.sun.com/app/docs/coll/MessageQueue_35_SP1
For information about the basic concepts of public-key cryptography; the Secure Sockets Layer (SSL) protocol; intranet, extranet, and Internet security; and the role of digital certificates in an enterprise, read the security-related appendixes in the Managing Servers With iPlanet Console 5.0 manual.
For information about the Windows 2003 Server and Windows password policies, read the following Microsoft publications: