Peter ... my apologies .. I used the wrong terminology. 

May I please contact you offline on this ??. 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of Peter Relson
Sent: Sunday, December 01, 2013 9:47 AM
To: [email protected]
Subject: Re: Un-authorized caller calling authorized services.

>TPROT

TPROT can tell you "it is not OK". It almost never can tell you fully "it is
OK" because of time-of-check to time-of-use exposures.

>In a nutshell, I'm trying to find out what the best way is for an 
>un-authorized called to call  / invoke a SRB.

Not only is there no "best way" there is "no way".

You cannot "call" or "invoke" an SRB. You can only schedule an SRB. And
scheduling an SRB is limited to authorized programs.
Thus an unauthorized program would have to "get authorized" (such sa via SVC
or PC) in order to schedule an SRB.

It is also the case that, if you do allow an unauthorized program to invoke
an SVC/PC to schedule an SRB, you might need to provide some throttle to
prevent a malicious unauthorized program from doing this "too often".

Peter Relson
z/OS Core Technology Design

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