[389-users] Re: Login restrictions

Good morning.

It might be enlightening to define "a lot of machines." I have ~300 clients tied to a 3 node 389-ds cluster, with a few hundred accounts.

I've built access restrictions here on the basis of hostname and NSRole definitions. For Linux hosts using sssd, I have a filter expression in ldap_user_search_base that ends up something like:

ldap_user_search_base = ou=OU,dc=fq,dc=dn?sub?|(host=hostname)(nsrole=cn=Role1,ou=OU,dc=fq,dc=cn)...

I use a similar expression in /etc/ldap.conf for earlier versions, using nss_base_passwd (there is a difference in syntax.) As a side note, I'd started a few years back with the pam_filter call, and discovered that I was overrunning a buffer. My Linux kickstarts build these expressions for me automatically, and I've got scripts set up to extend as necessary. Similar filters work for both AIX and HP-UX.

With the exception of HP-UX (due to the way that filtering is implemented in the LDAP-UX client,) this does have the pleasant side effect of only showing users that are authorized for a particular server, not the entire list of accounts when running 'getent passwd' or the O/S equivalent.

Obviously, you can tailor the filtering expressions to search on arbitrary attributes.

adduser? Unless I'm missing something completely, that's only for local accounts.

Jeff Kalchik
Systems Engineering
Land O'Lakes

-----Original Message-----
From: Enrico Morelli [mailto:morelli@cerm.unifi.it]
Sent: Thursday, April 28, 2016 4:07 AM
To: 389-users@lists.fedoraproject.org
Subject: [389-users] Re: Login restrictions

On Wed, 27 Apr 2016 17:44:22 -0000
"Lukas Slebodnik" <lslebodn@fedoraproject.org> wrote:

> > Is it possible to restrict login only to to whom bound to a
> > determinated group?
> >
> > I tried to use the following lines in sssd.conf but doesn't works:
> >
> > access_provider = ldap
> > ldap_access_order = filter
> > ldap_access_filter = (gidNumber=900)
> I think it might be simpler to use access_provider simple @see man
> sssd-simple
>
> [domain/example.com]
> access_provider = simple
> simple_allow_users = user1, user2

Could be, but I think to loose the LDAP benefit. I've a lot of machines and to avoid to create/remove users on each machine I installed 389ds.
So if I've to add/remove user to the simple_allow_users on each machine I can continue to use adduser. Or not?

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Enrico Morelli
System Administrator | Programmer | Web Developer

CERM - Polo Scientifico
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phone: +39 055 457 4269
fax: +39 055 457 4927
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