Re: V5R4 and patch programs -- MI400

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-----Original Message-----
From: mi400-bounces@xxxxxxxxxxxx [mailto:mi400-bounces@xxxxxxxxxxxx]On
Behalf Of Bryan Dietz
Sent: Tuesday, January 31, 2006 9:11 AM
To: mi400@xxxxxxxxxxxx
Subject: [MI400] V5R4 and patch programs



>I thought this last paragraph was very interesting.

><snip>
>Finally, if you are running so-called "patched" or "system state" programs,
>like the old Fast400 governor buster, V5R4 is not going to let you do this
>any more. As part of the security enhancements in i5/OS, the software will
>not let programs go down into the microcode layer anymore. By letting
>independent software vendors do this, IBM left itself open to the whole
>Fast400 debacle and also left open a potential security risk on its AS/400,
>iSeries, and i5 servers.

how do they stop it?  What was fast400 able to do and how does the system
prevent it from working on the new release?

The STRSST option that allows the PowerPC instructions of a program to be
altered - does that option still exist on V5R4?  Will the altered program be
allowed to execute?

-Steve

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