Mapping NT groups to Unix groups

Rod Sanborn rsanborn at
Thu Sep 21 21:26:07 GMT 2000


    I am trying to map NT groups to Unix groups via the username map file so
that I can grant access to Samba shares simply by adding users to an group
on the NT side.  On the Unix side, the group has permissions to the
directory, but the user has not been added to the actual Unix group.

    I am having trouble getting this to work and the documentation seems to
be giving me conflicting information.  I first looked in the O'Reilly book
"Using Samba" that came with the distribution.  In section "username
map" it says:  "You can also map NT groups to one or more specific Unix
groups using the @ sign."  In the HTML documentation, it says something
completely different.  In the section on "username map" it says:  The list
of usernames on the right may contain names of the form @group in which case
they will match any UNIX username in that group".  Further down it
continues:  "Or to map anyone in the UNIX group "system" to the UNIX name
"sys" you would use:

        sys = @system

    Has anybody else gotten this to work or is there somebody savy enough
with the internals to know which documentation is correct?  I would really
appreciate any help.

    I am using an SGI (Irix 6.5.5) with Samba 2.0.7.  My NT clients are on
an NT domain.

Rod Sanborn
rsanborn at

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