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Re: [Fedora-directory-users] best practice for uid

Thanks Phil. From my experience its a good idea to
have a userid "and" a unique identifier for all
entries in the ldap. We use a uuid, and thats our rdn.
At some point in the netscape/iplanet/sun/aol
directory server   road to red hat, it began assigning
a uuid as an operational attribute for internal
purposes. Same thing really but since its operational
its not easy to work with.

Like you, I have had mixed results with COTS. Some
work and some dont have any flexibility. Hopefully we
can instill in vendors and their developers that we
are going to have a unique identifier other than the
uid and hey, what a surprise, it might be in the DN.

--- Phil Lembo <phil lembo gmail com> wrote:

> Pierangelo has it exactly right. The place to fix
> this is at the application
> that's attempting to authenticate. A few years ago,
> I had to push back on a
> certain vendor of portfolio/project management
> software and got their
> development team to admit they'd hardcoded their
> LDAP config to work with a
> certain fixed DIT scheme. My response to them was
> that they should be
> ashamed of themselves for such shoddy programming.
> Subsequent versions of
> the same software now do The Right Thing (TM) and
> allow you to define the
> user ID attribute to be used and then do a search on
> LDAP to pull back the
> dn of the corresponding entry before attempting to
> authenticate. As others
> have said on this thread, which you could use a
> custom attribute for the
> user ID, down the road you'll regret it because
> you're inevitably going to
> have integration problems with COTS applications you
> may need to integrate
> with.
>  The scheme I've found most useful is to assign a
> unique identifier to each
> user. Something completely meaningless, like a
> lowercase letter followed by
> a bunch of digits (that pattern will work as an ID
> in most NOS or non
> directory systems like AD, NDS, Unix, NT SAM, etc).
> Just increment the
> numeric suffix as you assign each new ID. Using
> e-mail like aliases is
> generally a pain because it requires you to change
> the ID every time you
> have a name change. Same is true for IDs that are
> tied to a user's role
> (like using different letter prefixes for employees
> and temps). It's usually
> pretty easy to build a routine into your user
> provisioning software that
> will increment the ID value automatically. Any
> provisioning software that
> won't let you do this should get rejected out of
> hand (with a pointed memo
> to the vendor giving the reason for the rejection).
> Getting any enterprise,
> especially one where system administration is
> decentralized, to adopt a
> common ID scheme  is almost always difficult and
> usually requires
> considerable effort on the 8th layer of the OSI
> model -- Politics.
> Phil Lembo
> > --
> Fedora-directory-users mailing list
> Fedora-directory-users redhat com

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