On 09/25/2013 11:15 AM, Sumit Bose wrote:
> On Wed, Sep 25, 2013 at 12:01:38PM +0300, Alexander Bokovoy wrote:
>> On Wed, 25 Sep 2013, Sumit Bose wrote:
>>> On Wed, Sep 25, 2013 at 10:17:04AM +0200, Martin Kosek wrote:
>>>> On 09/24/2013 04:40 PM, Alexander Bokovoy wrote:
>>>>> On Tue, 24 Sep 2013, Alexandre Ellert wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I've successfully setup a testing environment with an IPA server (RHEL 
>>>>>> 6.4)
>>>>>> and a cross realm trust with my Active Directory (Win2008 R2).
>>>>>> Authentication works both with AD passwords and Kerberos GSS-API.
>>>>>>
>>>>>> Now, I'm trying to find the way to manage ssh key which belong to AD
>>>>>> users. It seems that I can do that only with users declared on IPA
>>>>>> domain.  Can you confirm that ?
>>>>> Yes. AD users do not exist physically in IPA LDAP, therefore there is no
>>>>> object to assign attributes into.
>>>>>> Does winsync method provide a way to add ssh key to an AD user ?
>>>>> Under winsync AD users would become 'normal' LDAP objects in IPA,
>>>>> therefore you can assign additional values/attributes to them.
>>>>
>>>> Though note that winsync, one would loose all the SSO capabilities...
>>>>
>>>> Alexander, I am just thinking about possibilities. We now have the concept 
>>>> of
>>>> external groups in FreeIPA which one can then use as members of normal 
>>>> POSIX
>>>> groups and use them in HBAC or other policies.
>>>>
>>>> Would it be possible to create "external users", i.e. user entries 
>>>> identified
>>>> by FQDN/SID and then be able to assign selected set of user attributes 
>>>> (like
>>>> SSH public key, home directory, shell...) which could then be leveraged by 
>>>> SSSD?
>>>
>>> Does anyone know if there is a ssh key management solution for AD? If
>>> yes, I think it would be better to use this and enhance SSSD to fetch
>>> them from AD. The data can then be stored in the sssd cache on the IPA
>>> servers and distributed to the IPA clients with the LDAP exop we already
>>> use to make the AD users available to the clients.
>> Yes, there are few commercial solutions. Many of them use their own
>> schemes so supporting them would need to work on multiple different
>> schemes.
>>
>> http://tools.ietf.org/html/draft-ylonen-sshkeybcp-01 describes recommended 
>> practices.
> 
> Thank you for the details. So it looks that this might be an interesting
> RFE.
> 
> bye,
> Sumit

Agreed.

I filed a RFE ticket: https://fedorahosted.org/sssd/ticket/2099

Martin

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