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-----Original Message-----
From: kerberos-bounces at mit.edu [mailto:kerberos-bounces at mit.edu] On Behalf Of kerberos-request at mit.edu
Sent: Wednesday, August 17, 2011 9:11 AM
To: kerberos at mit.edu
Subject: EXT :Kerberos Digest, Vol 104, Issue 17

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Today's Topics:

   1. WWW-Authenticate: Negotiate in Header (Dirk Heimann)


----------------------------------------------------------------------

Message: 1
Date: Tue, 16 Aug 2011 11:37:26 +0200
From: "Dirk Heimann" <dirk.heimann at westlotto.com>
Subject: WWW-Authenticate: Negotiate in Header
To: <kerberos at mit.edu>
Message-ID: <4E4A56760200003F00029DB0 at Mclp3_server.wl>
Content-Type: text/plain; charset="ISO-8859-1"

Hi,
i have a problem with my SLES11SP1 Webserver. I want to use the Kerberos authentication for SingleSignOn between my Windows ADS, Windows Client and Linux Webserver. I have the /etc/krb5.conf configured and pushed the Kerberos Ticket from my Windows ADS on the Linux Webserver. I also protected my DocumentRoot with a .htaccess file. Now i want to access the webserver and get a 401 error message. In the http trace i can't see the entry "WWW-Authenticate: Negotiate" in the header.
A look into a functioning server errorlog shows me the following:
 [Tue Aug 16 10:23:18 2011] [debug] src/mod_auth_kerb.c(1277): [client 10.43.2.33] Acquiring creds for HTTP at entintranet2.wl 
[Tue Aug 16 10:23:18 2011] [debug] src/mod_auth_kerb.c(1424): [client 10.43.2.33] Verifying client data using KRB5 GSS-API
[Tue Aug 16 10:23:18 2011] [debug] src/mod_auth_kerb.c(1440): [client 10.43.2.33] Client didn't delegate us their credential
[Tue Aug 16 10:23:18 2011] [debug] src/mod_auth_kerb.c(1459): [client 10.43.2.33] GSS-API token of length 161 bytes will be sent back
[Tue Aug 16 10:38:08 2011] [debug] src/mod_auth_kerb.c(1667): [client 10.43.2.33] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
[Tue Aug 16 10:38:08 2011] [debug] src/mod_auth_kerb.c(1667): [client 10.43.2.33] kerb_authenticate_user entered with user (NULL) and auth_type Kerberos
[Tue Aug 16 10:38:08 2011] [debug] src/mod_auth_kerb.c(1277): [client 10.43.2.33] Acquiring creds for HTTP at entintranet2.wl 
[Tue Aug 16 10:38:08 2011] [debug] src/mod_auth_kerb.c(1424): [client 10.43.2.33] Verifying client data using KRB5 GSS-API
[Tue Aug 16 10:38:08 2011] [debug] src/mod_auth_kerb.c(1440): [client 10.43.2.33] Client didn't delegate us their credential
[Tue Aug 16 10:38:08 2011] [debug] src/mod_auth_kerb.c(1459): [client 10.43.2.33] GSS-API token of length 161 bytes will be sent back

The errorlog of the faulty server is empty. Only in the access log I see one 401 messages:
10.43.2.33 - - [16/Aug/2011:10:47:12 +0200] "GET / HTTP/1.1" 401 1432 "-" "Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.2.18) Gecko/20110614 BTRS28059 Firefox/3.6.18"

It looks as if the Kerberos module is not used by the Apache.

Dirk



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