Several Netscape applications, including Netscape Roaming
Access are
LDAP-enabled. Sendmail can use LDAP to look
up addresses. Your organization can use LDAP as an organization-wide
directory and/or name service (in place of NIS or flat files). You can
even use a personal LDAP server to keep track of your own e-mail address
book (see the section called LDAP Resources on the Web).
LDAP can be used as an authentication service via the
pam_ldap module. LDAP is commonly used as a
central authentication server so that users have a unified login that
covers console logins, POP servers, IMAP servers, machines connected to
the network using Samba, and even Windows NT machines. All of these
login situations can rely on the same user ID and password combination,
using LDAP. The pam_ldap module is provided in the
nss_ldap package.