[python-ldap] GSSAPI and Active Directory

Michael Ströder michael at stroeder.com
Wed Aug 12 19:51:09 CEST 2015

陈伟洪 wrote:
> I try to use digest-md5:
> [..]
> ldap.INVALID_CREDENTIALS: {'info': "80090303: LdapErr: DSID-0C0904BE,
> comment: The digest-uri does not match any LDAP SPN's registered for this
> server., data 0, v1db1", 'desc': 'Invalid credentials'}
> 2015-08-12 6:52 GMT+08:00 Jun Sheng <chaoseternal at gmail.com>:
>> I remember if GSSAPI is used, a successful kerberos login (kinit) must
>> be performed before doing ldap_bind, but I am not very sure.
>> Still, AD supports digest-md5, I suggest you try that first.
>> On Tue, Aug 11, 2015 at 3:50 PM, 陈伟洪 <whchen1080 at gmail.com> wrote:
>>> In the Linux environment, I tried to run this script:
>>> [..]
>>> sasl_auth = ldap.sasl.sasl(
>>>           {
>>>             ldap.sasl.CB_AUTHNAME:"",
>>>             ldap.sasl.CB_PASS    :"",
>>>           },
>>>             'GSSAPI'
>>>             )
>>> adconn.sasl_interactive_bind_s('', sasl_auth)
>>> [..]
>>> ldap.LOCAL_ERROR: {'info': 'SASL(-1): generic failure: GSSAPI Error:
>>> Unspecified GSS failure.  Minor code may provide more information (No
>>> Kerberos credentials available)', 'desc': 'Local error'}

It works for me both GSSAPI and DIGEST-MD5.

But MS AD is pretty picky regarding correct DNS names to be used. So this
likely does not work:


Put correct DNS names in their. Start with locating the DCs hostnames:

host -t srv _ldap._tcp.example.com

with example.com being the DNS domain name of your AD domain.

Ciao, Michael.

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