10.2. Checklist of prerequisites for establishing an AD trust


You can use the following checklist to review the prerequisites for creating a trust with an AD domain.

Expand
表10.1 Table
ComponentConfigurationAdditional details

Product versions

Your Active Directory domain is using a supported version of Windows Server.

Supported versions of Windows Server

AD Administrator privileges

The Active Directory administration account must be a member of one of the following groups:

  • Enterprise Admin (EA) group in the AD forest
  • Domain Admins (DA) group in the forest root domain for your AD forest
 

Networking

IPv6 support is enabled in the Linux kernel for all IdM servers.

IPv6 requirements in IdM

Date and time

Verify the date and time settings on both servers match.

Time service requirements for IdM

Encryption types

The following AD accounts have AES encryption keys:

  • AD Administrator
  • AD user accounts
  • AD services

If you have recently enabled AES encryption in AD, generate new AES keys with the following steps:

  1. Re-establish trust relationships between any AD domains in your forest.
  2. Change the passwords for the AD Administrator, user accounts, and services.

Firewall

You have opened all necessary ports on IdM servers and AD Domain Controllers for bidirectional communication.

Ports required for communication between IdM and AD

DNS

  • IdM and AD each have unique primary DNS domains.
  • IdM and AD DNS domains do not overlap.
  • Proper DNS service (SRV) records for LDAP and Kerberos services.
  • You can resolve DNS records from all DNS domains in the trust.
  • Kerberos realm names are the upper-case versions of primary DNS domain names. For example, DNS domain example.com has a corresponding Kerberos realm EXAMPLE.COM

Configuring DNS and realm settings for a trust

Topology

Ensure you are attempting to establish a trust with an IdM server you have configured as a trust controller.

Trust controllers and trust agents

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