We are currently working on a project to integrate LDAP and SSL to
provide a secure next-generation network directory services archetecture
to replace the aging Network Information Service(NIS). LDAP is quickly
gaining acceptance as the directory service structure for the internet. It has
many features that make it ideal for providing network information services,
including encryption support, access control lists, fast read accesss, etc..
LDAP will combine several systems that normaly have to be maintained seperately
, such as NT authentication, UNIX authentication, MTA routing information,
services/protocols/hosts information, network address books, etc.
As to why you would want to use LDAP on your network, please see this
interesting article from Bruce Markey at Netscape:
A System Administrator's Vie
w of LDAP