[38288] in Kerberos

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Any set of flags on a princ to allow an AS but no TGS request?

daemon@ATHENA.MIT.EDU (Chris Hecker)
Thu Aug 2 00:53:02 2018

To: "kerberos@mit.edu" <kerberos@mit.edu>
From: Chris Hecker <checker@d6.com>
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Date: Wed, 1 Aug 2018 21:52:46 -0700
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I'd like to make a princ that can be used to test whether the kdc is
working for login, but I don't want this princ to be able to get tickets
to any services (except the initial TGT).  I can turn off u2u with dup
skey, and I tried setting the -maxlife to 0 but that defaulted to 24
hours, and even setting -maxlife "1 second" still lets kvno get tickets
for a while (I assume for the clock skew window, though the tickets have
a start time after their expires time, so maybe they're not usable, I
haven't tried using them).  Am I missing something obvious?

Chris
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