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3 hours


The “RACF - RACF and z/OS UNIX” course describes the requirements for configuring security in a z/OS UNIX environment using RACF. It covers the creation and use of UID and GID definitions as well as file and directory permission bits and access control lists that are referenced when accessing those z/OS UNIX resources.


Application programmers, systems programmers, database administrators, security administrators and anyone requiring knowledge about securing z/OS UNIX users and system resources using RACF.


Successful completion of the “RACF - Defining and Managing Users” and “RACF - Managing RACF Groups and Administrative Authorities” course or equivalent knowledge.


    After completing this course, the student will be able to:
  • Describe how z/OS UNIX users are defined
  • Define and Maintain z/OS UNIX File Permissions and Access Control Lists
  • Invoke and use ISHELL to maintain z/OS UNIX file and directory access

Course Content

Defining and Managing z/OS UNIX Users

How z/OS UNIX Security Requirements Differ
UID and GID Requirements
OMVS Profile Segment
Automatically Assigning UIDs and GIDs
Unique and Shared IDs
Displaying UID and GID Information
z/OS UNIX Attributes in the User Profile
Updating OMVS Segment Data
Superuser Authority

Protecting z/OS UNIX Resources

Protecting z/OS UNIX Files and Directories
Access Classes
Creating and Updating File Permission Bits
Using Access Control Lists
Controlling Access to File Systems
Using the ISPF UNIX Shell to Protect File and Directory Access
Restricting Access to z/OS UNIX File Systems
Using FACILITY Class Profiles to Protect z/OS UNIX Functions

RACF - RACF and z/OS UNIX Mastery Test

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