
Chapter 2 Setting Up Windows Services 19
Open Directory password validation can be used with user accounts stored in LDAP
directory domains as well as NetInfo directory domains. The directory domain does not
store the Open Directory password, just a pointer to the Open Directory Password
Server and a password ID. The Open Directory Password Server stores passwords in a
private database file readable only by the root user, and the contents are encrypted.
The Open Directory Password Server never allows passwords to be read over the
network—they can only be set and verified.
Shadow Passwords
If a user’s account has a password type of shadow password, the user’s password is
encrypted and stored in a file on the server. Each user’s shadow password is stored in a
different file, and these files can be read only by the root user. Only user accounts that
are stored in a local directory domain can have a shadow password.
A shadow password can be used to authenticate for Windows file service, but can’t be
used to log in to the Windows domain of a PDC.
Authentication Manager Password
Mac OS X Server supports user accounts that were configured to use the legacy
Authentication Manager technology for password validation in Mac OS X Server
versions 10.0–10.2. After upgrading a server to Mac OS X Server version 10.3, existing
users can continue to use their same passwords. An existing user account uses
Authentication Manager if the account is in a NetInfo domain for which Authentication
Manager has been enabled and the account is set to use a crypt password.
If you migrate a directory domain from NetInfo to LDAP, all user accounts that used
Authentication Manager for password validation are converted to have a password
type of Open Directory.
Setting the Server’s Role and Identity for Windows
Services
You can set up Mac OS X Server to assume any of three roles in providing Windows
services:
• Primary domain controller (PDC) The server provides Windows file and print
services. It also hosts a Windows domain, storing user, group, and computer accounts
and providing authentication services to the domain. The PDC server can host user
profiles and home directories for users who have user accounts on the PDC.
• Domain member The server provides Windows file and print services. It gets
authentication services from the Mac OS X Server PDC. A domain member can host
user profiles and home directories for users who have user accounts on the PDC.
LL2356.book Page 19 Thursday, September 4, 2003 3:21 PM
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