[modauthkerb] Negotiate on Windows with cross-realm trust ADand MIT Kereros.
Douglas E. Engert
deengert at anl.gov
Mon Jul 23 17:27:56 EDT 2007
Mikkel Kruse Johnsen wrote:
> Hi Markus
>
> Yes that is what I want. I need the KRB5CCNAME (the credential) so I can
> login to my OpenLDAP SASL based server and PostgreSQL with kerberos.
So what you need is the Kerberos credentials. I have an older version
of mod_auth_kerb I assume your version has the routine store_gss_creds()
which should be doing this for you and creating the name in the
create_krb5_ccache(). and calling
apr_table_setn(r->subprocess_env, "KRB5CCNAME", ccname);
Is KrbSaveCredentials being set in the conf file?
This controls the saving of credentials:
if (conf->krb_save_credentials && delegated_cred != GSS_C_NO_CREDENTIAL)
store_gss_creds(...)
Are the above routines being called.
Is the client actually delegating a credential.
Is the KRB5CCNAME being set in the environment of the subprocess.
>
> /Mikkel
>
> On Mon, 2007-07-23 at 19:33 +0100, Markus Moeller wrote:
>>
>> Storing credentials in a krb5 cache pointing to KRB5CCNAME has nothing
>> to do with delegation. You only need delegation if you wnat that
>> Apache logs into a backend application with the users ID. Is that what
>> you want ? If see you need to be very careful as iit gives yor apache
>> server a lot of power if you don't use constraint delegation. You
>> need to protect it like a domain controller !!!
>>
>> Markus
>>
>>
>> "Mikkel Kruse Johnsen" <mikkel at linet.dk <mailto:mikkel at linet.dk>>
>> wrote in message news:1184745677.3078.5.camel at tux.lib.cbs.dk...
>>
>> Hi All
>>
>> That did the trick, recompiling krb5-1.5 (on RHEL5 64bit) with
>> that patch.
>>
>> Now I only have the problem that mod_auth_kerb don't write my
>> credentials to KRB5CCNAME (in PHP).
>>
>> My "kerbtray" under windows says it is Forwardable but no "Ok to
>> delegate", So I guess that is the problem.
>>
>> Under linux they are forwardable.
>>
>> ------
>> [mkj at tux ~]$ klist -f
>> Ticket cache: FILE:/tmp/krb5cc_500
>> Default principal: mkj.lib at HHK.DK <mailto:mkj.lib at HHK.DK>
>>
>> Valid starting Expires Service principal
>> 07/18/07 09:16:49 07/18/07 19:16:55 krbtgt/HHK.DK at HHK.DK
>> <mailto:HHK.DK at HHK.DK>
>> renew until 07/19/07 09:16:49, Flags: FRIA
>> 07/18/07 09:17:06 07/18/07 19:16:55 krbtgt/CBS.DK at HHK.DK
>> <mailto:CBS.DK at HHK.DK>
>> renew until 07/19/07 09:16:49, Flags: FRAO
>> 07/18/07 09:17:04 07/18/07 19:16:55 HTTP/sugi.cbs.dk at CBS.DK
>> <mailto:sugi.cbs.dk at CBS.DK>
>> renew until 07/18/07 09:17:04, Flags: FRAT
>> 07/18/07 09:35:35 07/18/07 19:16:55 host/sugi.cbs.dk at CBS.DK
>> <mailto:sugi.cbs.dk at CBS.DK>
>> renew until 07/18/07 09:35:35, Flags: FRAT
>>
>>
>> Kerberos 4 ticket cache: /tmp/tkt500
>> klist: You have no tickets cached
>> --------
>>
>>
>> I found how to set ok-as-delegate for heimdal how is this done for
>> MIT kerberos ?
>>
>> And how is it done under MS AD ?
>>
>> /Mikkel
>>
>>
>> On Tue, 2007-07-17 at 21:25 +0200, Achim Grolms wrote:
>>> On Tuesday 17 July 2007 09:41, Mikkel Kruse Johnsen wrote:
>>>
>>> > gss_accept_sec_context() failed: Unspecified GSS failure. Minor code
>>> > may provide more information (Cannot allocate memory)
>>>
>>> What OS and what Kerberoslibs do you use?
>>> Background of this question:
>>>
>>> I've seen this errormessage "Cannot allocate memory"
>>> (and it's solution) in
>>>
>>> <http://sourceforge.net/mailarchive/forum.php?thread_name=2306E39C-CE49-4CC2-A902-4AE1C40E486E%40neosaint.org&forum_name=modauthkerb-help <http://sourceforge.net/mailarchive/forum.php?thread_name=2306E39C-CE49-4CC2-A902-4AE1C40E486E%40neosaint.org&forum_name=modauthkerb-help>>
>>>
>>> Achim
>> Mikkel Kruse Johnsen
>> Linet
>> Ørholmgade 6 st tv
>> 2200 København N
>>
>> Tlf: +45 2128 7793
>> email: mikkel at linet.dk
>> www: http://www.linet.dk
>>
>>
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> *Mikkel Kruse Johnsen*
> Adm.Dir.
>
> *Linet <http://www.linet.dk>*
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--
Douglas E. Engert <DEEngert at anl.gov>
Argonne National Laboratory
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