HI Mike,     (replying on both RACF-L and IBM-MAIN)

I misunderstood what you were proposing in your initial reply on IBM-MAIN. I 
thought you were advocating setting default access of NONE on all Linklist 
libraries. I now understand you are advocating setting default access to READ, 
which I generally agree with. "Default access", as I use the term, can either 
be UACC(READ) or ID(*) READ. I generally favor the latter.

That said, this does need to be evaluated on a case-by-case basis as there can 
be exceptions. Consider ISMF. It does not run APF-authorized. If you want all 
users to use ISMF but also want to lock down certain functions, which can only 
be done with PROGRAM profiles, you put the ISMF libraries in the Linklist but 
set default access on the libraries to NONE. If default access is READ, users 
can copy the programs to their own libraries and execute them, thus bypassing 
PROGRAM profile protection which is tied to specific libraries. Radoslaw also 
mentioned blocking JOBLIB/STEPLIB to the libraries as allowing this may not 
always be desirable to certain libraries; although in most cases, its fine.

Regards, Bob

-----Original Message-----
Date:    Sun, 23 Jun 2024 14:15:53 +0200
From:    Radoslaw Skorupka <[email protected]>
Subject: Re: Data Set Commander Monitor (DSCMON) Access Authority

W dniu 23.06.2024 o 10:51, Mike Cairns pisze:
> No Bob - I meant UACC(READ) or its equivalent.  I just don't see what gate is 
> being closed by insisting that LinkList or LPA libraries must have 
> UACC(NONE), when, as you confirm, they cannot be fetch protected and 
> therefore the content is available to anyone on the system anyway.

I met the following justification: when you have UACC(NONE) for 
linklisted library then you enforce use LNKLST instead of STEPLIB/JOBLIB.
While I understand the above, I don't agree with the goal as being worth 
such configuration.

And there is another approach: UACC above NONE should not be used at 
all. Just because mama (auditor) said so.


-- 
Radoslaw Skorupka
Lodz, Poland

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