Re: Grant only one AD group to samba share ?

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On 22/05/2012 22:17, Newman, John W wrote:

> Well.. I'm not really sure what that is (I inherited this project).  In smb.conf all he has here is:  idmap uid = 10000-20000     idmap gid=10000-20000 .... I don't see idmap backend = set at all in here.  That is probably a big part of the problem isn't it?   
If you have to keep a consistent uid and gid mapping (not really needed,
unless you use NFS, I think), use another idmap backend. I used RID that
applies a simple formula to the SID to obtain uid and gid consistent
across all the clients accessing an NFS server.

>> Are nsswitch.conf and PAM configured for authentication?
> For what kind of authentication?   /etc/nsswitch and /etc/pam/* are untouched from the defaults.  
Edit /etc/nsswitch.conf to include winbind as data source for both
passwd and group info. Once you've done this, you'll be able to use AD
names as standard *nix names, and the reverse mapping will automatically
happen (like when doing an "ls -l").
If you don't do that, you'll keep getting "unknown group".

PS: I prefer to keep "normalize names", that makes AD names lowercase
and replaces spaces with underscores. This is my winbind-related part of
smb.conf:

# Big dir -- I must disable enums. If your dir is small, enable 'em!
        winbind enum users = No
        winbind enum groups = No
# Allow  logon even if network isn't available
        winbind offline logon = Yes
# Deep-resolve groups (heavy and slow!)
        winbind nested groups = Yes
# *nix-friendly names
        winbind normalize names = Yes
        winbind refresh tickets = Yes
        winbind use default domain = yes
        winbind uid = 10000-99999
        winbind gid = 10000-99999

        idmap domains = PERSONALE STUDENTI
        idmap config PERSONALE:backend = rid
        idmap config PERSONALE:base_rid  = 500
        idmap config PERSONALE:range = 100000 - 49999999
        idmap config STUDENTI:backend = rid
        idmap config STUDENTI:base_rid  = 500
        idmap config STUDENTI:range = 50000000 - 99999999

BYtE,
 Diego.
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