The Ironstream SSDFAUTH library must only be accessed by STEPLIB or JOBLIB. If your installation standards dictate that system load libraries must be included in LINKLIST or LPA, there are Ironstream FTP exit programs that may inadvertently be invoked by your existing system FTP and TCPIP tasks. This will result in SAF failures in these address spaces and may cause other issues if you are already using your own versions of these exits.
For more information and to understand your options, review the following:
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FTP needs to be set up as a protected program in RACF, as described in the ZEN FTP CONTROL Configuration and Reference manual bundled with Ironstream documentation. Specifically, refer to the section “A Note on First-Time Login Problems” in “Chapter 3, Getting Started”.
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Also, refer to the “Protecting Programs” chapter in IBM’s z/OS Security Server RACF Security Administrator's Guide SA23-2289.