Hi,

Can someone confirm if it's necessary to have nss? I don't have nss in my 
configuration (I'm running OpenBSD, so it's a little different) and it's not 
working, I've also tried adding LDAP users to my /etc/passwd for my samba users 
as an experiment, but I couldn't get them to authenticate with LDAP through a 
shell, nor did it help Samba in any way so I removed them again. According to 
the logs, login_ldap (the bsd_auth module for ldap authentication) is 
attempting to communicate with openldap with ldapv2, which openldap doesn't 
support, so it appears this technique is impossible as far as I could figure 
out. However, it is strange that login_ldap and openldap ship together in the 
same version of the bsd packages collection, yet they communicate with 
different versions. Anyways, I need LDAP authentication for users with shell 
access, but luckily not on this server, they will only need to authenticate 
against this server, not login to the server itself via
 SSH or shell, only log in onto the shell on Linux workstations (which can 
easily be configured to authenticate with my OpenBSD openldap server using 
ldapv3). Anyways, this is a bit off-topic I think, but does this in any way 
relate to Samba? If I don't have users in my /etc/passwd file can't they log in 
to Samba?

Btw I don't think that should break my configuration, considering that I should 
still be able to log in as root since root has account in both LDAP and 
/etc/passwd, though the problem I'm experiencing with my configuration is that 
I don't even get an opportunity to log in, it just bluntly throws at me "The 
specified network name is no longer available" (in most cases, though during 
this stage I cannot see anything being logged in Samba - maybe Windows caches 
the first attempt and then doesn't give "Access is denied" until you reboot? As 
usually when I reboot I get "Access is denied" again), though the first time it 
shows "Access is denied", the same happens with NET VIEW, yet, I'm not given a 
single opportunity to log in, on joining a domain (attempting to) it throws the 
same messages at me, dcdiag.txt also isn't much help. I have also tried setting 
my Windows username and password to match a Samba username and password 
(although I don't think this
 should be required).

Another thing, is it possible to hide a certain folder in every user's home 
directory from them when viewing with Samba? I've got a Maildir in each user's 
home directory to keep mail, but it's owned by vmail anyway (I know I should 
probably use virtual aliases and domains for this, but this seems to fit my 
scenario better), so the user can't access it, would just like them to not see 
it, if it's in any way possible. (Though this is not serious, since currently, 
my users can't even connect!)

Regards

Lionel

----- Original Message ----
From: Adam Williams <[EMAIL PROTECTED]>
To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Cc: [email protected]
Sent: Wednesday, 20 February 2008 9:33:53
Subject: Re: [Samba] understanding the ldap backend



[EMAIL PROTECTED] wrote:
> Hello List,
>
> i am trying to understand the LDAP-backend i just set up. Maybe 
> someone can help me a little understanding the whole magic.
>
> In smb.conf i have my smbldap-tools scripts:
>  # use the smbldap-tools scripts
>  add user script = /usr/sbin//smbldap-useradd -m "%u"
>  delete user script = /usr/sbin//smbldap-userdel "%u"
>  add machine script = /usr/sbin//smbldap-useradd -w "%u"
>  add group script = /usr/sbin//smbldap-groupadd -p "%g"
>  delete group script = /usr/sbin//smbldap-groupdel "%g"
>  add user to group script = /usr/sbin//smbldap-groupmod -m "%u" "%g"
>  delete user from group script = /usr/sbin//smbldap-groupmod -x "%u" "%g"
>  set primary group script = /usr/sbin//smbldap-usermod -g "%g" "%u"
>
>
> and some ldap specific stuff:
>  passdb backend = ldapsam:ldap://127.0.0.1/
>  ldap admin dn = cn=Manager,dc=example,dc=net
>  ldap suffix = dc=example,dc=net
>  ldap group suffix = ou=Groups
>  ldap user suffix = ou=Users
>  ldap machine suffix = ou=Computers
>  ldap idmap suffix = ou=Users
>  idmap backend = ldap://127.0.0.1
>  #ldap ssl = start tls
>  ldap delete dn = Yes
>
>
>
> 1.) Now how does the authentification excatly work? Does samba talk 
> directly to the ldap database and verifies user/password?
> 2.) I guess changing/deleting passwords/users is beeing made by the 
> smblda-tools.
> 3.) How does samba get the user ids? By contacting the ldap database 
> directl again?
> 4.) How does samba get he user/group of files and folders? By nss?
> 5.) Has samba got anything to do with nss/libnss-ldap?
>
>
> Thanks, Mario

1) yes
2) you can use smbldap-passwd to change a user's password if you want to 
set the passwd chat, unix password sync, etc.  or you can just set ldap 
passwd sync = yes and let samba handle the password changing directly
3)yes
4) yes
5) i think so, i have nss_ldap working because my users need shell 
access for database/html work.  i've never tried getting samba going 
without using nss_ldap for user auth.  i don't know if samba can look up 
the users directly or if it gets their user, group, machine accounts via 
nss_ldap.  but nss_ldap is trivial to get working.

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