Andrew, from the capture you have provided us 
(no-canon.enterprise.lc-realm.uc-user.krb5-realm.win2k.upn.pcap), 

Client sent Cname = [email protected] and the 
actual submitted Realm from the network capture is 
WIN2012R2.ABARTLET.WGTN.CAT-IT.CO.NZ.  (It is not 
w2k12.abartlet.wgtn.cat-it.co.nz)

The client did not ask for canonicalization.
The KDC returned Cname [email protected] which 
is exactly what is sent
The KDC returned Crealm WIN2012R2.ABARTLET.WGTN.CAT-IT.CO.NZ as expected.

The realm is always normalized per RFC. It's just that if windows AD receives a 
mixed case realm name, then it will do a case insensitive comparision per 
MS-KILE 3.1.5.7 Internationalization and Case Sensitivity.

I do not see short-form domain being changed to a DNS-based realm. Please let 
me know if I am missing something.  


Regards,
Sreekanth Nadendla
Microsoft Windows Open Specifications

-----Original Message-----
From: Andrew Bartlett [mailto:[email protected]] 
Sent: Monday, February 16, 2015 11:11 PM
To: Sreekanth Nadendla
Cc: MSSolve Case Email; [email protected]
Subject: Re: [cifs-protocol] 114121712176508 MS-KILE Behaviour for client 
principal name in service tickets

On Tue, 2015-02-17 at 03:44 +0000, Sreekanth Nadendla wrote:
> Hello Andrew, MS-KILE section “3.1.5.7 Internationalization and Case 
> Sensitivity” in mentions that Name comparisons, whether for users or domains 
> MUST NOT be case sensitive in MS-KILE. So a separate WBN is NOT needed.

I still don't see where that allows a short-form domain to be changed into a 
DNS-based realm, nor a implies that the case of that MUST be transformed to 
upper case.

Andrew Bartlett

--
Andrew Bartlett
http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba




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