[Freeipa-users] Additional pre-authentication required, Ticket Wrong ?

Tue Mar 31 09:38:30 UTC 2015

Here some extra logging from the kerberos log:

Mar 31 11:34:51 ldap-01.domain.local krb5kdc[2764](info): AS_REQ (6
etypes {18 17 16 23 25 26}) 10.10.0.121: NEEDED_PREAUTH:
kinituser at DOMAIN.LOCAL for krbtgt/DOMAIN.LOCAL at DOMAIN.LOCAL,
Additional pre-authentication required
Mar 31 11:34:51 ldap-01.domain.local krb5kdc[2764](info): AS_REQ (6
etypes {18 17 16 23 25 26}) 10.10.0.121: ISSUE: authtime 1427794491,
etypes {rep=18 tkt=18 ses=18}, kinituser at DOMAIN.LOCAL for
krbtgt/DOMAIN.LOCAL at DOMAIN.LOCAL
Mar 31 11:34:51 ldap-01.domain.local krb5kdc[2764](info): TGS_REQ (6
etypes {18 17 16 23 25 26}) 10.10.0.121: ISSUE: authtime 1427794491,
etypes {rep=18 tkt=18 ses=18}, kinituser at DOMAIN.LOCAL for
HTTP/ldap-01.domain.local at DOMAIN.LOCAL

I don't get the preauth needed, does it have anything todo with the
301 redirect which I follow with CURL ?

2015-03-31 11:15 GMT+02:00 Matt . <yamakasi.014 at gmail.com>:
> Yes I would assume too, but it's just kicking out possibilities what
> could make it not working.
>
> I cannot figure out why it only logs the 401 after the known 301's in
> the access_log and nothing further, apache really blocks, so kerberos
> should be in the way for sure, but how.
>
>
>
> 2015-03-31 11:09 GMT+02:00 Sumit Bose <sbose at redhat.com>:
>> On Tue, Mar 31, 2015 at 11:02:24AM +0200, Matt . wrote:
>>> On my client I still see:
>>>
>>> 03/31/2015 11:00:08  04/01/2015 11:00:07  krbtgt/DOMAIN.LOCAL at DOMAIN.LOCAL
>>> 03/31/2015 11:00:09  04/01/2015 11:00:07  HTTP/ldap-01.domain.local at DOMAIN.LOCAL
>>>
>>> Should ldap-01 not be ldap as I go through my loadbalancer ?
>>
>> I guess not, because your loadbalancer just redirects the traffic and
>> the authentication is done with ldap-01.
>>
>> bye,
>> Sumit
>>
>>>
>>> Do I need to merge keytabs or so ?
>>>
>>> 2015-03-31 7:54 GMT+02:00 Matt . <yamakasi.014 at gmail.com>:
>>> > Hi,
>>> >
>>> > I tried to trace some stuff but this doesn't give me much more info.
>>> >
>>> > What I see at the moment in the /var/log/httpd/acces_log is exactly
>>> > what happens but without the info I need to get a better view:
>>> >
>>> > 10.10.0.121 - - [30/Mar/2015:22:22:58 +0200] "POST /ipa/json HTTP/1.1" 301 258
>>> > 10.10.0.121 - - [30/Mar/2015:22:22:58 +0200] "POST /ipa/json HTTP/1.1"
>>> > 301 259 "https://ldap.domain.local/ipa/json" "-"
>>> > 10.10.0.121 - - [30/Mar/2015:22:22:58 +0200] "POST /ipa/json HTTP/1.1" 401 1469
>>> > 10.10.0.121 - - [30/Mar/2015:22:22:59 +0200] "POST /ipa/json HTTP/1.1" 401 1469
>>> >
>>> > 2015-03-30 15:03 GMT+02:00 Sumit Bose <sbose at redhat.com>:
>>> >> On Mon, Mar 30, 2015 at 04:56:11AM +0200, Matt . wrote:
>>> >>> Hi,
>>> >>>
>>> >>> I just tot home and typing from my cell so i'm suite short in words
>>> >>>
>>> >>> Create keytab for ldap-01.domain
>>> >>> Kinit with that to ldap.domain
>>> >>> Curl against ldap.domain
>>> >>> Get a 301 which I manage from curl (goes well)
>>> >>> Get kerberos ticket error
>>> >>>
>>> >>> now I don't kinit anymore so re-use my existing ticket and curl against
>>> >>> ldap-01.domain and I'm accepted and can execute stuff.
>>> >>>
>>> >>> My ssl is OK, ticket also it seems.
>>> >>
>>> >> Maybe the output of
>>> >>
>>> >> KRB5_TRACE=/dev/sdtout curl -v ....
>>> >>
>>> >> might help to see what is going on?
>>> >>
>>> >> bye,
>>> >> Sumit
>>> >>
>>> >>>
>>> >>> Thanks M.
>>> >>> Op 30 mrt. 2015 03:50 schreef "Dmitri Pal" <dpal at redhat.com>:
>>> >>>
>>> >>> > On 03/29/2015 04:47 AM, Matt . wrote:
>>> >>> >
>>> >>> >> Hi Guys,
>>> >>> >>
>>> >>> >> Now my Certification issues are solved for using a loadbalancer in
>>> >>> >> front of my ipa servers I get the following:
>>> >>> >>
>>> >>> >> Unable to verify your Kerberos credentials
>>> >>> >>
>>> >>> >> and in my logs:
>>> >>> >>
>>> >>> >> Additional pre-authentication required.
>>> >>> >>
>>> >>> >> This happens when I connect throught my loadbalancers, I see my server
>>> >>> >> coming ni with the right IP.
>>> >>> >>
>>> >>> >> When I access my ipa server directly, not using the loadbalancer IP
>>> >>> >> between it, my kerberos Ticket is valid.
>>> >>> >>
>>> >>> >> I get the feeling that when I use my loadbalancers and because of that
>>> >>> >> I get a 301 redirect it needs a preauth. I see some issues on
>>> >>> >> mailinglists but it doesn't fit my situation.
>>> >>> >>
>>> >>> >> Why wants it the preauth when I already have a valid ticket and my
>>> >>> >> redirect is followed by CURL and posted the right way ?
>>> >>> >>
>>> >>> >
>>> >>> > Can you describe the sequence?
>>> >>> > What do you do?
>>> >>> >
>>> >>> > From the client you try IPA CLI and this is where you see the problem even
>>> >>> > with the valid ticket or is the flow different?
>>> >>> >
>>> >>> >  I hope someone has an idea.
>>> >>> >>
>>> >>> >> Thanks,
>>> >>> >>
>>> >>> >> Matt
>>> >>> >>
>>> >>> >>
>>> >>> >
>>> >>> > --
>>> >>> > Thank you,
>>> >>> > Dmitri Pal
>>> >>> >
>>> >>> > Sr. Engineering Manager IdM portfolio
>>> >>> > Red Hat, Inc.
>>> >>> >
>>> >>> > --
>>> >>> > Manage your subscription for the Freeipa-users mailing list:
>>> >>> > https://www.redhat.com/mailman/listinfo/freeipa-users
>>> >>> > Go to http://freeipa.org for more info on the project
>>> >>> >
>>> >>
>>> >>> --
>>> >>> Manage your subscription for the Freeipa-users mailing list:
>>> >>> https://www.redhat.com/mailman/listinfo/freeipa-users
>>> >>> Go to http://freeipa.org for more info on the project
>>> >>