[32213] in Kerberos
mixed case hostname issue
daemon@ATHENA.MIT.EDU (Matt Zagrabelny)
Wed Mar 31 11:24:25 2010
From: Matt Zagrabelny <mzagrabe@d.umn.edu>
To: kerberos <kerberos@mit.edu>
Date: Wed, 31 Mar 2010 10:21:05 -0500
Message-ID: <1270048865.4868.262.camel@grateful.d.umn.edu>
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Greetings,
I have a mixed-case hostname:
kplz354S2 (note the capital 'S'), its FQDN is kplz354S2.d.umn.edu.
When I try to telnet to it:
% telnet kplz354S2.d.umn.edu
Trying 10.25.1.14...
Will send login name and/or authentication information.
Connected to kplz354S2.d.umn.edu (10.25.1.14).
Escape character is '^]'.
[ Kerberos V5 refuses authentication ]
kerberos_server_auth:   Couldn't authenticate client from
grateful.d.umn.edu.
% Authentication failed
% Authentication failed
Connection closed by foreign host.
I get the following message in my kdc.log:
Mar 31 10:05:50 stout krb5kdc[27785](info): TGS_REQ (1 etypes {1})
131.212.60.196: UNKNOWN_SERVER: authtime 1270046583,  mzagrabe@D.UMN.EDU
for host/kplz354s2.d.umn.edu@D.UMN.EDU, Server not found in Kerberos
database
Note the lower-case 's' in the FQDN.
The principal in the KDC database matches the mixed-case FQDN:
kadmin.local:  listprincs
<snip>
host/kplz354S2.d.umn.edu@D.UMN.EDU
<snip>
FWIW, I've grepped /usr/share/doc/krb* for the word 'case' and didn't
find any hits.
Any ideas on this one?
Thanks,
--=20
Matt Zagrabelny - mzagrabe@d.umn.edu - (218) 726 8844
University of Minnesota Duluth
Information Technology Systems & Services
PGP key 4096R/42A00942 2009-12-16
Fingerprint: 5814 2CCE 2383 2991 83FF  C899 07E2 BFA8 42A0 0942
He is not a fool who gives up what he cannot keep to gain what he cannot
lose.
-Jim Elliot
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