The *Correct* method of having a selected group of users authorized to
access your system is to use LDAP groups and that's something I intend
to add to web2py as currently LDAP support is really basic.

In my case, I want to authenticate only against LDAP and no
registration is required.

On Sep 1, 12:18 pm, Don Lee <sam...@gmail.com> wrote:
> I know it seems strange but LDAP authentication works best if you follow the
> books recommendation.  I spent some time trying to understand the code.  I
> used wingIDE to try to understand what was going on (I am new to python).  I
> tried only LDAP, inserting LDAP before the reference to auth, and doing what
> the book recommended, which is to append LDAP.
>
> I think the way the code is written, LDAP should be appended.  Otherwise,
> anyone from your LDAP server can login and use the application, and this may
> be what you want.  But I would wager that most people will not want this.
> In a company of 1000 people, you may only want 20 of those people to have
> access to your application.  Appending forces the users to register, and it
> configured, allows the administrator to approve the user the before they
> gain access.
>
> The major problem I had with appending LDAP is that the password is checked
> against the local password database first.  In my scenario, the user
> registers with no password because the LDAP server already has their
> password.  So when I approve them, I either have to manually change the
> empty password to something the user will not know or figure out a way to
> automate that.  Because the local empty password will be accepted.  But once
> I have set the password to something the user would never type, LDAP
> authentication works.
>
> *** A word of caution to anyone testing LDAP on ubuntu 9.04, apparently
> there is something wrong with trying to connect to a secure LDAP server.  I
> could only get non-SSL connections to work.  Secure connections worked fine
> with RedHat.
>
>
>
> On Sun, Aug 30, 2009 at 4:00 PM, Ahmed Soliman <ah...@farghal.com> wrote:
> > Hello Everybody,
> > I've seen a *possible* bug if I got things right in the authentication
> > code, let me tell you about how to reproduce it first.
> > *
> > *
> > *steps to reproduce:*
>
> >    1. I use LDAP authentication (LDAP only, no local authentication
> >    wanted) so I set my
>
> > auth.settings.login_methods = ldap_auth(server=ldapConfig.server,
> > base_dn=ldapConfig.basedn, mode=ldapConfig.searchattr)]
>
> >    1. When I try to login with LDAP account things go great and the user
> >    is created in the authentication database as caching, next time you login
> >    with that user you will be able to login with any password!, the LDAP
> >    authentication is not even checked!
> >    2. When you try to login with any other unknown user in the database,
> >    the LDAP authentication is checked and fails as expected.
>
> > I'm submitting the patch against the source version and the fix is really
> > simple, please review and consider for merge.
>
> > Note: I noticed 'self.settings.alternate_requires_registration' and I
> > didn't understand its role, but it's set to False by default and setting it
> > to True will cause the following
> >  1- Initially you won't be able to authenticate to LDAP users that are not
> > already in the cache, but if they are in the cache already things work fine
> > and you can't see the bug, so it's confusing what it should 'actually' do.
>
> > Thanks
>
> > Ahmed Soliman
> > Software Engineer
> > B-Virtual Team.
>
> > Thebe Technology. Egypt - Belgium
> > 16 Nehro St. Heliopolis. Cairo
> > Egypt.
>
> >http://www.b-virtual.org
> >http://www.thebetechnology.com
>
> > GPG ID: 0xAEEE5042
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