David Boreham wrote:
Joerg Schoppet wrote:
I'm in an account of a bigger company, which uses Microsoft Active
Directory for User Management and Authentication.
Now we need to save some additional information for a subset of all
employees, but the AD-Administrators do not want to include the
required attributes in the company ad. Our plan is now to install
"Fedora Directory Server" to hold these additional information. The
users, which uses a special application, should now connect to this
server to retrieve the necessary information, but the authentication
should stay in the AD.
Is it possible, and if yes how, to configure "Fedora Directory
Server" to pass the authentication information to the AD and only let
the specific user bind to the directory server if the
AD-Authentication is OK?
Hmm...I think what you are trying to implement is a form of Directory
Federation.
You might be able to achieve what you want with FDS and its AD sync
feature.
In that case, passwords are synchronized from AD to FDS (and vice versa)
so your requirement for authentication 'against AD' would be met
except that
authentication would be done by FDS, using the AD password. If you
want to
proxy authentication directly to AD that might be possible without
code changes in
FDS, but I'm not sure.
Another option you might look at is to deploy Microsoft's ADAM, which
is a Federation add-on for AD. It was designed to meet your exact needs
(application wants to use AD for directory services, but AD admins refuse
to allow the schema to be extended).
The Pass Through Authentication plugin should also work with ADS because
it doesn't rely on proxied authentication unlike the Chaining Backend
plugin or the loop detection control. PTA is the magic that allows the
uid=admin,..,o=Netscaperoot user to log in and configure all FDS servers
in an instance group even though o=Netscaperoot only exists in the
configuration instance. I've seen it work with ADS too though. Details:
http://www.redhat.com/docs/manuals/dir-server/ag/7.1/pasthru.html#1095869
You may need a FDS build from the tip, the PTA doesn't correctly handle
bind responses with server controls. I'm not sure about ADS' use of
controls in bind responses.
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