1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML
><HEAD
><TITLE
>Group mapping HOWTO</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="SAMBA Project Documentation"
HREF="Samba-HOWTO.html"><LINK
REL="PREVIOUS"
TITLE="Reporting Bugs"
HREF="bugreport.html"><LINK
REL="NEXT"
TITLE="Portability"
HREF="portability.html"></HEAD
><BODY
CLASS="CHAPTER"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>SAMBA Project Documentation</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="bugreport.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="portability.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="GROUPMAPPING">Chapter 20. Group mapping HOWTO</H1
><P
>
Starting with Samba 3.0 alpha 2, a new group mapping function is available. The
current method (likely to change) to manage the groups is a new command called
<B
CLASS="COMMAND"
>smbgroupedit</B
>.</P
><P
>The first immediate reason to use the group mapping on a PDC, is that
the <B
CLASS="COMMAND"
>domain admin group</B
> of <TT
CLASS="FILENAME"
>smb.conf</TT
> is
now gone. This parameter was used to give the listed users local admin rights
on their workstations. It was some magic stuff that simply worked but didn't
scale very well for complex setups.</P
><P
>Let me explain how it works on NT/W2K, to have this magic fade away.
When installing NT/W2K on a computer, the installer program creates some users
and groups. Notably the 'Administrators' group, and gives to that group some
privileges like the ability to change the date and time or to kill any process
(or close too) running on the local machine. The 'Administrator' user is a
member of the 'Administrators' group, and thus 'inherit' the 'Administrators'
group privileges. If a 'joe' user is created and become a member of the
'Administrator' group, 'joe' has exactly the same rights as 'Administrator'.</P
><P
>When a NT/W2K machine is joined to a domain, during that phase, the "Domain
Administrators' group of the PDC is added to the 'Administrators' group of the
workstation. Every members of the 'Domain Administrators' group 'inherit' the
rights of the 'Administrators' group when logging on the workstation.</P
><P
>You are now wondering how to make some of your samba PDC users members of the
'Domain Administrators' ? That's really easy.</P
><P
></P
><OL
TYPE="1"
><LI
><P
>create a unix group (usually in <TT
CLASS="FILENAME"
>/etc/group</TT
>), let's call it domadm</P
></LI
><LI
><P
>add to this group the users that must be Administrators. For example if you want joe,john and mary, your entry in <TT
CLASS="FILENAME"
>/etc/group</TT
> will look like:</P
><P
><PRE
CLASS="PROGRAMLISTING"
>domadm:x:502:joe,john,mary</PRE
></P
></LI
><LI
><P
>Map this domadm group to the <B
CLASS="COMMAND"
>domain admins</B
> group by running the command:</P
><P
><B
CLASS="COMMAND"
>smbgroupedit -c "Domain Admins" -u domadm</B
></P
></LI
></OL
><P
>You're set, joe, john and mary are domain administrators !</P
><P
>Like the Domain Admins group, you can map any arbitrary Unix group to any NT
group. You can also make any Unix group a domain group. For example, on a domain
member machine (an NT/W2K or a samba server running winbind), you would like to
give access to a certain directory to some users who are member of a group on
your samba PDC. Flag that group as a domain group by running:</P
><P
><B
CLASS="COMMAND"
>smbgroupedit -a unixgroup -td</B
></P
><P
>You can list the various groups in the mapping database like this</P
><P
><B
CLASS="COMMAND"
>smbgroupedit -v</B
></P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="bugreport.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="Samba-HOWTO.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="portability.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Reporting Bugs</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
> </TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Portability</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
|
