2016 – Page 3 – Rui Miguel Feio

Using CLIST with RACF SEARCH command

13th September 2016 Rui Miguel Feio

Probably not known to many people is the existence or how to use the CLIST parameter of the RACF SEARCH command. Its usefulness however makes it worthwhile for everyone to learn how it works. As you may know, to query the RACF database for the existence of profiles, we rely […]

Useful Operator Commands to Manage a Parallel Sysplex Environment

5th September 2016 Rui Miguel Feio

The following table contains the list of some useful operator commands to manage a Parallel Sysplex environment: Command Description ATS STAR commands D U,,AS Display auto switchable tape devices. V xxxx,AS,ON Turn on the auto switchable attribute for a specific device. V xxxx,AS,OFF Turn off the auto switchable attribute for […]

The RACF Started Task definition table ICHRIN03

30th August 2016 Rui Miguel Feio

Before the introduction of the RACF STARTED class, table ICHRIN03 was the way RACF had to control started tasks. However, and contrary to what we may believe, ICHRIN03 still plays an important role. ICHRIN03 is still used when: No STARTED class profile covering a resource exists A STARTED class profile […]

Unix System Services (USS) and Access Control Lists (ACL) using RACF

24th August 2016 Rui Miguel Feio

In z/OS Unix System Services (USS), Access Control Lists (ACLs) are used in conjunction with the normal permission bits, allowing access control for files and directories by individual UIDs and GIDs. These are known as extended Access Control Lists and require RACF class FSSEC to be active. Although controlled by […]

Watch hackers break into the US power grid

22nd August 2016 Rui Miguel Feio

A power company in the Midwest (USA) hired a group of white hat hackers to test its defenses. This 15 minute video shows how much work needs to be done to (properly) secure not only this company, but many other companies around the world from hackers. * A Tech Insider […]