missing parameters in krb5-conf

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missing parameters in krb5-conf

ankur-9
hello,
I am very new to kerberos authentication.

I have installed the krb5-user utility. i am getting the tickets from
the server. But when i start the kdamin utility it says missing
parameters in krb5-conf.

my configuration file is as follows:
#############################################################
[libdefaults]
        default_realm = EXAMPLE.COM

# The following krb5.conf variables are only for MIT Kerberos.
        krb4_config = /etc/krb.conf
        krb4_realms = /etc/krb.realms
        kdc_timesync = 1
        ccache_type = 4
        forwardable = true
        proxiable = true

# The following encryption type specification will be used by MIT
Kerberos
# if uncommented.  In general, the defaults in the MIT Kerberos code
are
# correct and overriding these specifications only serves to disable
new
# encryption types as they are added, creating interoperability
problems.
#
# Thie only time when you might need to uncomment these lines and
change
# the enctypes is if you have local software that will break on ticket
# caches containing ticket encryption types it doesn't know about
(such as
# old versions of Sun Java).

# default_tgs_enctypes = des3-hmac-sha1
# default_tkt_enctypes = des3-hmac-sha1
# permitted_enctypes = des3-hmac-sha1

# The following libdefaults parameters are only for Heimdal Kerberos.
        v4_instance_resolve = false
        v4_name_convert = {
                host = {
                        rcmd = host
                        ftp = ftp
                }
                plain = {
                        something = something-else
                }
        }
        fcc-mit-ticketflags = true

[realms]

        ATHENA.MIT.EDU = {
                kdc = kerberos.mit.edu:88
                kdc = kerberos-1.mit.edu:88
                kdc = kerberos-2.mit.edu:88
                admin_server = kerberos.mit.edu
                default_domain = mit.edu
        }
        MEDIA-LAB.MIT.EDU = {
                kdc = kerberos.media.mit.edu
                admin_server = kerberos.media.mit.edu
        }
        ZONE.MIT.EDU = {
                kdc = casio.mit.edu
                kdc = seiko.mit.edu
                admin_server = casio.mit.edu
        }
        MOOF.MIT.EDU = {
                kdc = three-headed-dogcow.mit.edu:88
                kdc = three-headed-dogcow-1.mit.edu:88
                admin_server = three-headed-dogcow.mit.edu
        }
        CSAIL.MIT.EDU = {
                kdc = kerberos-1.csail.mit.edu
                kdc = kerberos-2.csail.mit.edu
                admin_server = kerberos.csail.mit.edu
                default_domain = csail.mit.edu
                krb524_server = krb524.csail.mit.edu
        }
        IHTFP.ORG = {
                kdc = kerberos.ihtfp.org
                admin_server = kerberos.ihtfp.org
        }
        GNU.ORG = {
                kdc = kerberos.gnu.org
                kdc = kerberos-2.gnu.org
                kdc = kerberos-3.gnu.org
                admin_server = kerberos.gnu.org
        }
        1TS.ORG = {
                kdc = kerberos.1ts.org
                admin_server = kerberos.1ts.org
        }
        GRATUITOUS.ORG = {
                kdc = kerberos.gratuitous.org
                admin_server = kerberos.gratuitous.org
        }
        DOOMCOM.ORG = {
                kdc = kerberos.doomcom.org
                admin_server = kerberos.doomcom.org
        }
        ANDREW.CMU.EDU = {
                kdc = vice28.fs.andrew.cmu.edu
                kdc = vice2.fs.andrew.cmu.edu
                kdc = vice11.fs.andrew.cmu.edu
                kdc = vice12.fs.andrew.cmu.edu
                admin_server = vice28.fs.andrew.cmu.edu
                default_domain = andrew.cmu.edu
        }
        CS.CMU.EDU = {
                kdc = kerberos.cs.cmu.edu
                kdc = kerberos-2.srv.cs.cmu.edu
                admin_server = kerberos.cs.cmu.edu
        }
        DEMENTIA.ORG = {
                kdc = kerberos.dementia.org
                kdc = kerberos2.dementia.org
                admin_server = kerberos.dementia.org
        }
        stanford.edu = {
                kdc = krb5auth1.stanford.edu
                kdc = krb5auth2.stanford.edu
                kdc = krb5auth3.stanford.edu
                master_kdc = krb5auth1.stanford.edu
                admin_server = krb5-admin.stanford.edu
                default_domain = stanford.edu
        }

[domain_realm]
        .mit.edu = ATHENA.MIT.EDU
        mit.edu = ATHENA.MIT.EDU
        .media.mit.edu = MEDIA-LAB.MIT.EDU
        media.mit.edu = MEDIA-LAB.MIT.EDU
        .csail.mit.edu = CSAIL.MIT.EDU
        csail.mit.edu = CSAIL.MIT.EDU
        .whoi.edu = ATHENA.MIT.EDU
        whoi.edu = ATHENA.MIT.EDU
        .stanford.edu = stanford.edu
        .slac.stanford.edu = SLAC.STANFORD.EDU

[login]
        krb4_convert = true
        krb4_get_tickets = false
##########################################################


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Re: missing parameters in krb5-conf

tps (Bugzilla)
Am 31.01.2011 12:51, schrieb ankur:

> hello,
> I am very new to kerberos authentication.
>
> I have installed the krb5-user utility. i am getting the tickets from
> the server. But when i start the kdamin utility it says missing
> parameters in krb5-conf.
>
> my configuration file is as follows:
> #############################################################
> [libdefaults]
> default_realm = EXAMPLE.COM
>
> # The following krb5.conf variables are only for MIT Kerberos.
> krb4_config = /etc/krb.conf
> krb4_realms = /etc/krb.realms
> kdc_timesync = 1
> ccache_type = 4
> forwardable = true
> proxiable = true
>
> # The following encryption type specification will be used by MIT
> Kerberos
> # if uncommented.  In general, the defaults in the MIT Kerberos code
> are
> # correct and overriding these specifications only serves to disable
> new
> # encryption types as they are added, creating interoperability
> problems.
> #
> # Thie only time when you might need to uncomment these lines and
> change
> # the enctypes is if you have local software that will break on ticket
> # caches containing ticket encryption types it doesn't know about
> (such as
> # old versions of Sun Java).
>
> # default_tgs_enctypes = des3-hmac-sha1
> # default_tkt_enctypes = des3-hmac-sha1
> # permitted_enctypes = des3-hmac-sha1
>
> # The following libdefaults parameters are only for Heimdal Kerberos.
> v4_instance_resolve = false
> v4_name_convert = {
> host = {
> rcmd = host
> ftp = ftp
> }
> plain = {
> something = something-else
> }
> }
> fcc-mit-ticketflags = true
>
> [realms]
>
> ATHENA.MIT.EDU = {
> kdc = kerberos.mit.edu:88
> kdc = kerberos-1.mit.edu:88
> kdc = kerberos-2.mit.edu:88
> admin_server = kerberos.mit.edu
> default_domain = mit.edu
> }
> MEDIA-LAB.MIT.EDU = {
> kdc = kerberos.media.mit.edu
> admin_server = kerberos.media.mit.edu
> }
> ZONE.MIT.EDU = {
> kdc = casio.mit.edu
> kdc = seiko.mit.edu
> admin_server = casio.mit.edu
> }
> MOOF.MIT.EDU = {
> kdc = three-headed-dogcow.mit.edu:88
> kdc = three-headed-dogcow-1.mit.edu:88
> admin_server = three-headed-dogcow.mit.edu
> }
> CSAIL.MIT.EDU = {
> kdc = kerberos-1.csail.mit.edu
> kdc = kerberos-2.csail.mit.edu
> admin_server = kerberos.csail.mit.edu
> default_domain = csail.mit.edu
> krb524_server = krb524.csail.mit.edu
> }
> IHTFP.ORG = {
> kdc = kerberos.ihtfp.org
> admin_server = kerberos.ihtfp.org
> }
> GNU.ORG = {
> kdc = kerberos.gnu.org
> kdc = kerberos-2.gnu.org
> kdc = kerberos-3.gnu.org
> admin_server = kerberos.gnu.org
> }
> 1TS.ORG = {
> kdc = kerberos.1ts.org
> admin_server = kerberos.1ts.org
> }
> GRATUITOUS.ORG = {
> kdc = kerberos.gratuitous.org
> admin_server = kerberos.gratuitous.org
> }
> DOOMCOM.ORG = {
> kdc = kerberos.doomcom.org
> admin_server = kerberos.doomcom.org
> }
> ANDREW.CMU.EDU = {
> kdc = vice28.fs.andrew.cmu.edu
> kdc = vice2.fs.andrew.cmu.edu
> kdc = vice11.fs.andrew.cmu.edu
> kdc = vice12.fs.andrew.cmu.edu
> admin_server = vice28.fs.andrew.cmu.edu
> default_domain = andrew.cmu.edu
> }
> CS.CMU.EDU = {
> kdc = kerberos.cs.cmu.edu
> kdc = kerberos-2.srv.cs.cmu.edu
> admin_server = kerberos.cs.cmu.edu
> }
> DEMENTIA.ORG = {
> kdc = kerberos.dementia.org
> kdc = kerberos2.dementia.org
> admin_server = kerberos.dementia.org
> }
> stanford.edu = {
> kdc = krb5auth1.stanford.edu
> kdc = krb5auth2.stanford.edu
> kdc = krb5auth3.stanford.edu
> master_kdc = krb5auth1.stanford.edu
> admin_server = krb5-admin.stanford.edu
> default_domain = stanford.edu
> }
>
> [domain_realm]
> .mit.edu = ATHENA.MIT.EDU
> mit.edu = ATHENA.MIT.EDU
> .media.mit.edu = MEDIA-LAB.MIT.EDU
> media.mit.edu = MEDIA-LAB.MIT.EDU
> .csail.mit.edu = CSAIL.MIT.EDU
> csail.mit.edu = CSAIL.MIT.EDU
> .whoi.edu = ATHENA.MIT.EDU
> whoi.edu = ATHENA.MIT.EDU
> .stanford.edu = stanford.edu
> .slac.stanford.edu = SLAC.STANFORD.EDU
>
> [login]
> krb4_convert = true
> krb4_get_tickets = false
> ##########################################################
>
>

Do you really use stanford.edu or any of the other default realms?
If not --- what about removing them?

It looks a lot like you never added your own realms here, leaving
the file as it was installed by some thumd installer leaving all
unreachable, example realms.

--
Thomas
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Re: missing parameters in krb5-conf

Brian Candler
In reply to this post by ankur-9
On Mon, Jan 31, 2011 at 03:51:00AM -0800, ankur wrote:
> hello,
> I am very new to kerberos authentication.
>
> I have installed the krb5-user utility. i am getting the tickets from
> the server. But when i start the kdamin utility it says missing
> parameters in krb5-conf.

Yep, kadmin needs to be configured explicitly (in krb5.conf) with the
location of the master KDC. e.g.

        EXAMPLE.COM = {
            kdc = kdc1.example.com
            kdc = kdc2.example.com
            admin_server = kdc1.example.com
        }

At some point in the future it may be able to pick this up from DNS SRV
records instead, or be able to specify it on the kadmin command line - but
neither of those options works today.
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