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Authenticating using lower case domain/realm

daemon@ATHENA.MIT.EDU (San tos)
Mon Mar 9 07:50:04 2009

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Date: Mon, 9 Mar 2009 11:48:55 +0000
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From: San tos <sansancasd@gmail.com>
To: kerberos@mit.edu
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Hello to all.

I have successfully configured ubuntu machines to authenticate to a active
directory running windows 2k (pam_krb5/LDAP/Kerberos). The realm is
DOMAIN.COM, however in order to be user friendly and maintain the same login
address in everything, i need to authenticate using user@domain.com instead
of user@DOMAIN.COM.

It seems windows 2k, accepts either way, but maybe kerberos don't like the
response it receives:

kinit(v5): KDC reply did not match expectations while getting initial
credentials



I'm using ubuntu 8.10 and:

krb5-config 1.19 Configuration files for Kerberos Version 5
krb5-user 1.6.dfsg.4~beta1-3 Basic programs to authenticate using MIT Ker
libkrb53 1.6.dfsg.4~beta1-3 MIT Kerberos runtime libraries

The krb5.conf:

[libdefaults]
        default_realm = DOMAIN.COM
        kdc_timesync = 1
        ccache_type = 4
        forwardable = true
        proxiable = true
#       dns_lookup_realm = true
#       dns_lookup_kdc = false

[realms]
        DOMAIN.COM = {
                kdc = dc.domain.com
                admin_server = dc.domain.com
                default_domain = DOMAIN.COM
        }


[domain_realm]
        domain.com = DOMAIN.COM
        .domain.com  = DOMAIN.COM



I have googled, read the mans, tried a lot of other configurations, etc, for
days now, but can't figure it out. I will appreciate any input you got on
this.


Thanks in advance for you replies.

Santos
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