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Re: zwgc vs. attach

daemon@ATHENA.MIT.EDU (Greg Hudson)
Tue Jun 9 12:28:56 1998

To: "David Z. Maze" <dmaze@donut.mit.edu>
Cc: testers@MIT.EDU
In-Reply-To: Your message of "08 Jun 1998 21:32:17 EDT."
             <87u35v4axq.fsf@donut.mit.edu> 
Date: Tue, 09 Jun 1998 12:28:50 EDT
From: Greg Hudson <ghudson@MIT.EDU>

> Situation: zwgc is running normally, zephyrs show up authentic or
> unauthentic, as expected.  I attach an arbitrary AFS locker using
> the other ticket file.  Now all incoming zephyrs that would normally
> be reported authentic are reported as forged instead.

Nothing unexpected about this.  When you run attach, it subscribes you
to some filsrv triplets.  When the zephyr server receives your
subscription notice, it caches your session key and starts using that
to send you notices.  Since zwgc is using a different ticket file, it
uses a different session key to check the notices and concludes that
they are all forged.

One more reason why zephyr should have had a real session layer.  But
it's a bit late now.

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