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5.1. Prerequisites, Assumptions, and Requirements
• This guide does not explain Active Directory, how it works, how to set one up, or how to maintain it. It may not provide “best practices” for your environment.
• This guide assumes that a working Active Directory domain is already configured.
• The domain controller is acting as an authoritative DNS server for the domain.
• The domain controller is the primary DNS resolver as specified in /etc/resolv.conf.
• The appropriate _kerberos, _ldap, _kpasswd, etc. entries are configured in the DNS zone (see Resources section for external links).
• System time is synchronized on the domain controller (necessary for Kerberos).
• The domain used in this example is myubuntu.example.com .