Red Hat Enterprise Directory Services and Authentication (RH423)

Manage and deploy directory services for Red Hat Enterprise Linux systems

Note: Red Hat Enterprise Directory Services and Authentication (RH423) is only available as onsite, private team training. Contact us for more information.

Red Hat® Enterprise Directory Services and Authentication is an intensive course designed to train senior system administrators in the skills required to manage and deploy the Red Hat Directory Server on and for Red Hat Enterprise Linux® systems.

This course also covers cross-platform integration of directory services in order to provide authentication or information services across the enterprise. In addition, students will gain an understanding of the basic concepts, configuration, and management of lightweight directory access protocol (LDAP)-based services. This course also explores the Pluggable Authentication Modules (PAM) system, and how it integrates with services that require authentication.

This course can also help prepare current RHCEs for the Red Hat Certificate of Expertise in Directory Services and Authentication Exam (EX423).

Course content summary

  • Understanding basic LDAP concepts
  • Configuring and managing Red Hat Directory Server
  • Managing user authentication with PAM and glibc NSS
  • Using Kerberos and LDAP to centrally manage user authentication
  • Using LDAP referrals and replication for distributed, highly available directory server performance
  • Exploring options for integration with Microsoft Active Directory authentication

Read the entire course outline for more details.

What is a Certificate of Expertise credential?

Red Hat Certificates of Expertise are upper-level credentials available to RHCEs who pass upper-level performance-based exams. The certificates are incremental credentials, attached to an RHCE® certification, that demonstrate skills and knowledge in specialized areas.


Classroom training

Red Hat offers a robust 6-month schedule of classroom training in more then 40 locations across North America. Classes are taught by Red Hat certified instructors who actively engage students in task-focused activities, lab-based knowledge checks, and facilitative discussions.

Length:4 days , Monday through Thursday, 9 a.m. - 5 p.m.


Training units: 11


  • Experienced Linux system administrators responsible for the overall security of their systems and networked services

  • Experienced Linux system administrators tasked with security on other operating systems but who now want to perform those tasks on a Red Hat Linux system

  • An RHCE interested in earning a Red Hat Certification of Expertise, or a Red Hat Certified Security Specialist (RHCSS) or Red Hat Certified Architect (RHCA) certification


  • The essential elements of how to configure the services covered, as this course will be focusing on more advanced topics

  • Red Hat Certified Engineer (RHCE) certification is required to take the exam (EX423) or enroll in a version of this course that includes the exam (RH424)

  • For those who want to take this course without the exam (RH423 or RH423VT) and who have not earned their RHCE, confirmation of the correct skill set knowledge can be obtained by passing the online skills assessment


In addition to classroom training, this course is also offered in the following training methods: On-site team training Training teams together is a proven way for IT staffs to maximize performance and savings, and optimize Red Hat Technologies. Available for the entire JBoss and Red Hat curriculum, on-site training solutions offer flexibility and cost-effective training options whether at your offices, at our training venues, or hosted in a virtual environment.

  • Learn more about on-site team training Virtual training Red Hat virtual training is real-time training conducted by instructors through an online environment. Featuring the same industry-respected content as the corresponding classroom-based courses, virtual training provides an ideal combination of flexibility and knowledge transfer in the convenience of your offices or home.

  • Learn more about virtual training

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This course prepares you for these credentials:

Certificates of Expertise are incremental credentials attached to an RHCE certification that demonstrate skills and knowledge in specialized areas.