[19374] in Kerberos

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krb5 "Error Code 52" - UDP packet size - TCP fallback

daemon@ATHENA.MIT.EDU (=?iso-8859-1?Q?Uli_Schr=F6der?=)
Fri Jun 6 14:28:37 2003

From: =?iso-8859-1?Q?Uli_Schr=F6der?= <uli.schroeder@gmx.net>
To: <kerberos@mit.edu>
Date: Fri, 6 Jun 2003 20:28:18 +0200
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Hi folks,

I have a problem authenticating my RedHat 9 against Active Directory. 
I'm running the MIT implementation of kerberos.

When I run kinit for my testuser it works fine. The testuser ist just a 
member of the domain with read access to the directory. No other groups 
or permissions. When I try to do a kinit for my own account with all its

group memberships, etc., I just get the error code 52. I read on the 
internet that this is because the Windows 2000 server switches from UDP 
to TCP if the maximum packet size is exceeded. I think this happens with

all my "normal" users.

It seems like a lot of people managed to authenticate against AD. 
Maybesomeone can help me with this problem and tell me how he solved it.

Thanks in advance.

Cheers,
Uli


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