summaryrefslogtreecommitdiff
path: root/WHATSNEW.txt
blob: 9ea38929e01ec5995a53ee177fa292c0896243bc (plain)
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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
                   WHATS NEW IN Samba 3.0.0 RC1
                          August 15 2003
                  ==============================

This is the first release candidate snapshot of Samba 3.0.0. A release 
candidate implies that the code is very close to a final release, remember 
that this is still a non-production release intended for testing purposes.  
Use at your own risk. 

The purpose of this release candidate is to get wider testing of the major
new pieces of code in the current Samba 3.0 development tree. 
Please refer to the section on "Known Issues" for more details.


Major new features:
-------------------

1)  Active Directory support.  Samba 3.0 is now able to  
    join a ADS realm as a member server and authenticate 
    users using LDAP/Kerberos.

2)  Unicode support. Samba will now negotiate UNICODE on the wire and
    internally there is now a much better infrastructure for multi-byte
    and UNICODE character sets.

3)  New authentication system. The internal authentication system has
    been almost completely rewritten. Most of the changes are internal,
    but the new auth system is also very configurable.

4)  New default filename mangling system.

5)  A new "net" command has been added. It is somewhat similar to 
    the "net" command in windows. Eventually we plan to replace 
    numerous other utilities (such as smbpasswd) with subcommands 
    in "net".

6)  Samba now negotiates NT-style status32 codes on the wire. This
    improves error handling a lot.

7)  Better Windows 2000/XP/2003 printing support including publishing 
    printer attributes in active directory.

8)  New loadable RPC modules.

9)  New default dual-daemon winbindd support for better performance.

10) Support for migrating from a Windows NT 4.0 domain to a Samba 
    domain and maintaining user, group and domain SIDs.

11) Support for establishing trust relationships with Windows NT 4.0
    domain controllers.
  
12) Initial support for a distributed Winbind architecture using
    an LDAP directory for storing SID to uid/gid mappings.
  
13) Major updates to the Samba documentation tree.

14) Full support for client and server SMB signing to ensure
    compatibility with default Windows 2003 security settings.

Plus lots of other improvements!


Additional Documentation
------------------------

Please refer to Samba documentation tree (included in the docs/ 
subdirectory) for extensive explanations of installing, configuring
and maintaining Samba 3.0 servers and clients.  It is advised to 
begin with the Samba-HOWTO-Collection for overviews and specific 
tasks (the current book is up to approximately 400 pages) and to 
refer to the various man pages for information on individual options.


######################################################################
Changes since 3.0beta3
######################

Please refer to the CVS log for the SAMBA_3_0 branch for complete 
details

1)  Various memory leak fixes.
2)  Provide full support for SMB signing (server and client)
3)  Check for broken getgrouplist() in glibc.
4)  Don't get stuck in an infinite loop listing directories 
    recursively if the server returns an empty directory name
    (bug 222).
5)  Idle LDAP connections after 150 seconds.
6)  Patched make uninstallmodules (bug 236).
7)  Fix bug that caused smbd to return incomplete directory listings
    when UNIX files contained MS wildcard characters.
8)  Quiet default debug messages in command line tools.
9)  Fixes to avoid panics on invalid multi-byte strings.
10) Fix error messages when creating a new smbpasswd file (bug 198).
11) Implemented better detection routines in autoconf scripts for 
    locating ads support on the host OS.
12) Fix bug that caused libraries in /usr/local/lib to be ignored 
    (bug 174).
13) Ensure winbindd_ads uses the correct realm or domain name when 
    connecting to trusted DC.
14) Ensure a correct prototype is created for snprintf() (bug 187)
15) Stop files being created on read-only shares in some circumstances.
16) Fix wbinfo -p (bug 251)
17) Support schannel on any tcp/ip connection if necessary
18) Correct bug in user_in_list() so that it works with winbind groups 
    again.
19) Ensure the schannel bind credentials default to the domain 
    of the destination host.
20) Default password expiration time in account_pol.tdb to never 
    expire.  Remove any existing account_pol.tdb file to reset
    the new default policy (bug 184). 
21) Add buttons to SWAT to change the view of smb.conf (bug 212)
22) Fix incorrect checks that determine whether or not the 'add user 
    script' has been set.
23) More cleanup for internal character set conversions.
24) Fixes for multi-byte strings in stat cache code.
25) Ensure that the net command honors the 'workgroup' parameter 
    in smb.conf when not overridden from the command line.
26) Add gss-spnego support to the ntlm_auth tool.
27) Add vfs_default_quota VFS module.
28) Added server support for NT quota interfaces.
29) Prevent Krb5 replay attacks by adding a replay_cache.
30) Fix problems with winbindd and transitive trusts in AD domains.
31) Added -S to client tools for setting SMB signing options on the 
    command line.
32) Fix bug causing the 'passwd change program' to be called as the 
    connected user and not root.
33) Fixed data corruption bug in byte-range locking (e.g. affected MS Excel).
34) Support winbindd on FreeBSD is possible.
35) Look at only the first OID in the security blob sent in the session 
    setup request to determine the token type.
36) Only push locks onto a blocking lock queue if the posix lock failed with 
    EACCES or EAGAIN (this means another lock conflicts). Else return an 
    error and don't queue the request.
37) Fix command line argument processing for smbtar.
38) Correct issue that caused smbd to return generic unix_user.<uid> 
    for lookupsid().
39) Default to algorithmic mapping when generating a rid for a group
    mapping.
40) Expand %g and %G in logon script, profile path, etc... during
    a domain logon (bug 208).
41) Make sure smbclient obeys '-s <config>'
42) Added win2k3 shadow copy operations to VFS interface.
43) Allow connections to samba domain member as SERVER\user (don't
    always default to DOMAIN\user).
44) Remove checks in winbindd that caused it to attempt to use 
    non-transitive trust relationships.
45) Remove delays in winbindd caused by invalid DNS lookups.
46) Fix supplementary group memberships on systems with slightly 
    broken NSS implementations (bug 267).
47) Correct issue that prevented smbclient from viewing shares on 
    a win2k server when using a non-anonymous connection (bug 284).
48) Add --domain=DOMAIN_NAME to wbinfo for limiting operations like 
    'wbinfo -u' to a single domain.  The '.' character represents 
    our domain.
49) Fix group enumeration bug when using an LDAP directory for 
    storing group mappings.
50) Default to use NTLMv2 if available.  Fallback to not use LM/NTLM
    when the extended security capability bit is not set.
51) Fix crash in 'wbinfo -a' when using extended characters in the 
    username (bug 269).
52) Fix multi-byte strupper() panics (bug 205).
53) Add vfs_readonly VFS module.
54) Make sure to initialize the sambaNextUserRid and sambaNextGroupRid
    attributes when using 'idmap backend = ldap' (bug 280).
55) Make sure that UNIX users shared between a Samba PDC and member 
    samba server are seen as domain users and not local users on the 
    domain member.
56) Fix Query FS Info level 2.
57) Allow enumeration of users and groups by win9x "file server" (bug 
    286).
58) Create symlinks during install for modules that support mutliple
    functions (bug 91).
59) More iconv detection fixes.
60) Fix path length error in vfs_recycle module (bug 291).
61) Added server support for the LSA_DS UUID on the \lsarpc pipe.
    (server DsRoleGetPrimaryDomainInfo() is currently disabled).
62) Fix SMBseek and get/set position calls.
62) Fix SetFileInfo level 1.
63) Added tool to convert smbd log file to a pcap file (log2pcaphex).



Changes since 3.0beta2
######################

1)  Added fix for Japanese case names in statcache code; 
    these can change size on upper casing.
2)  Correct issues with iconv detection in configure script
    (support needed to find iconv libraries on FreeBSD).
3)  Fix bug that caused a WINS server to be marked as dead
    incorrectly (bug #190).
4)  Removing additional deadlocks conditions that prevented 
    winbindd from running on a Samba PDC (used for trust 
    relationships).
5)  Add support for searching for Active Directory for 
    published printers (net ads printer search).
6)  Separate UNIX username from DOMAIN\username in pipe 
    credentials.
7)  Auth modules now support returning NT_STATUS_NOT_IMPLEMENTED
    for cases that they cannot handle.
8)  Flush winbindd connection cache when the machine trust account
    password is changed while a connection is open (bug #200).
9)  Add support for 'OSVersion' server printer data string
    (corrects problem with uploading printer drivers from 
    WinXP clients).
10) Numerous memory leak fixes.
11) LDAP fixes ("passdb backend = ldapsam" & "idmap backend = ldap"):
    - Store domain SID in LDAP directory.
    - store idmap information in existing entries (use sambaSID=... 
      if adding a new entry).
12) Fix incorrect usage of primary group SID when looking up user 
    groups (bug #109).
13) Remove idmap_XX_to_XX calls from smbd.  Move back to the the
    winbind_XXX and local_XXX calls used in 2.2.
14) All uid/gid allocation must involve winbindd now (we do not 
    attempt to map unknown SIDs to a UNIX identify).
15) Add 'winbind trusted domains only' parameter to force a domain
    member.  The server to use matching users names from /etc/passwd 
    for its domain   (needed for domain member of a Samba domain).
16) Rename 'idmap only' to 'enable rid algorithm' for better clarity 
    (defaults to "yes").
17) Add support for multi-byte statcache code (bug #185)
18) Fix open mode race condition.
19) Implement winbindd local account management functions.  Refer to
    the "Winbind Changes" section for details.
20) Move RID allocation functions into idmap backend.
21) Fix parsing error that prevented publishing printers from a 
    Samba server in an AD domain.
22) Revive NTLMSSP support for named pipes.
23) More SCHANNEL fixes.
24) Correct SMB signing with NTLMSSP.
25) Fix coherency bug in print handle/printer object caching code
    that could cause XP clients to infinitely loop while updating 
    their local printer cache.
26) Make winbindd use its dual-daemon mode by default (use -Y to 
    start as a single process).
27) Add support to nmbd and winbindd for 'smbcontrol <pid> 
    reload-config'.
28) Correct problem with smbtar when dealing with files > 8Gb 
    (bug #102).



Changes since 3.0beta1
######################

1)  Rework our smb signing code again, this factors out some of 
    the common MAC calculation code, and now supports multiple 
    outstanding packets (bug #40).
2)  Enforce 'client plaintext auth', 'client lanman auth' and 'client
    ntlmv2 auth'.
3)  Correct timestamp problem on 64-bit machines (bug #140).
4)  Add extra debugging statements to winbindd for tracking down
    failures.
5)  Fix bug when aliased 'winbind uid/gid' parameters are used.
    ('winbind uid/gid' are now replaced with 'idmap uid/gid').
6)  Added an auth flag that indicates if we should be allowed 
    to fall back to NTLMSSP for SASL if krb5 fails.
7)  Fixed the bug that forced us not to use the winbindd cache when 
    we have a primary ADS domain and a secondary (trusted) NT4 
    domain. 
8)  Use lp_realm() to find the default realm for 'net ads password'.
9)  Removed editreg from standard build until it is portable..
10) Fix domain membership for servers not running winbindd.
11) Correct race condition in determining the high water mark
    in the idmap backend (bug #181).
12) Set the user's primary unix group from usrmgr.exe (partial 
    fix for bug #45).
13) Show comments when doing 'net group -l' (bug #3).
14) Add trivial extension to 'net' to dump current local idmap
    and restore mappings as well.
15) Modify 'net rpc vampire' to add new and existing users to
    both the idmap and the SAM.  This code needs further testing.
16) Fix crash bug in ADS searches.
17) Build libnss_wins.so as part of nsswitch target (bug #160).
18) Make net rpc vampire return an error if the sam sync RPC 
    returns an error.
19) Fail to join an NT 4 domain as a BDC if a workstation account
    using our name exists.
20) Fix various memory leaks in server and client code
21) Remove the short option to --set-auth-user for wbinfo (-A) to 
    prevent confusion with the -a option (bug #158).
22) Added new 'map acl inherit' parameter.
23) Removed unused 'privileges' code from group mapping database.
24) Don't segfault on empty passdb backend list (bug #136).
25) Fixed acl sorting algorithm for Windows 2000 clients.
26) Replace universal group cache with netsamlogon_cache 
    from APPLIANCE_HEAD branch.
27) Fix autoconf detection issues surrounding --with-ads=yes
    but no Krb5 header files installed (bug #152).
28) Add LDAP lookup for domain sequence number in case we are 
    joined using NT4 protocols to a native mode AD domain.
29) Fix backend method selection for trusted NT 4 (or 2k 
    mixed mode) domains. 
30) Fixed bug that caused us to enumerate domain local groups
    from native mode AD domains other than our own.
31) Correct group enumeration for viewing in the Windows 
    security tab (bug #110).
32) Consolidate the DC location code.
33) Moved 'ads server' functionality into 'password server' for
    backwards compatibility.
34) Fix winbindd_idmap tdb upgrades from a 2.2 installation.
    ( if you installed beta1, be sure to 
      'mv idmap.tdb winbindd_idmap.tdb' ).
35) Fix pdb_ldap segfaults, and wrong default values for 
    ldapsam_compat.
36) Enable negative connection cache for winbindd's ADS backend 
    functions.
37) Enable address caching for active directory DC's so we don't 
    have to hit DNS so much.
38) Fix bug in idmap code that caused mapping to randomly be 
    redefined.
39) Add tdb locking code to prevent race condition when adding a 
    new mapping to idmap.
40) Fix 'map to guest = bad user' when acting as a PDC supporting 
    trust relationships.
41) Prevent deadlock issues when running winbindd on a Samba PDC 
    to handle allocating uids & gids for trusted users and groups
42) added LOCALE patch from Steve Langasek (bug #122).
43) Add the 'guest' passdb backend automatically to the end of 
    the 'passdb backend' list if 'guest account' has a valid 
    username.
44) Remove samstrict_dc auth method.  Rework 'samstrict' to only 
    handle our local names (or domain name if we are a PDC).  
    Move existing permissive 'sam' method to 'sam_ignoredomain' 
    and make 'samstrict' the new default 'sam' auth method.
45) Match Windows NT4/2k behavior when authenticating a user with
    and unknown domain (default to our domain if we are a DC or 
    domain member; default to our local name if we are a 
    standalone server).
46) Fix Get_Pwnam() to always fall back to lookup 'user' if the 
    'DOMAIN\user' lookup fails.  This matches 2.2. behavior.
47) Fix the trustdom_cache code to update the list of trusted 
    domains when operating as a domain member and not using 
    winbindd.
48) Remove 'nisplussam' passdb backend since it has suffered for 
    too long without a maintainer.
    



######################################################################
Upgrading from a previous Samba 3.0 beta
########################################

Beginning with Samba 3.0.0beta3, the RID allocation functions
have been moved into winbindd.  Previously these were handled
by each passdb backend.  This means that winbindd must be running
to automatically allocate RIDs for users and/or groups.  Otherwise,
smbd will use the 2.2 algorithm for generating new RIDs.

If you are using 'passdb backend = tdbsam' with a previous Samba 
3.0 beta release (or possibly alpha), it may be necessary to 
move the RID_COUNTER entry from /usr/local/samba/private/passdb.tdb
to winbindd_idmap.tdb.  To do this:

1)  Ensure that winbindd_idmap.tdb exists (launch winbindd at least 
    once)
2)  build tdbtool by executing 'make tdbtool' in the source/tdb/ 
    directory
3)  run: (note that 'tdb>' is the tool's prompt for input)

       root# ./tdbtool /usr/local/samba/private/passdb.tdb
       tdb> show RID_COUNTER
       key 12 bytes
       RID_COUNTER
       data 4 bytes
       [000] 0A 52 00 00                                       .R.

       tdb> move RID_COUNTER /usr/local/samba/var/locks/winbindd_idmap.tdb
       ....
       record moved

If you are using 'passdb backend = ldapsam', it will be necessary to 
store idmap entries in the LDAP directory as well (i.e. idmap backend 
= ldap).  Refer to the 'net idmap' command for more information on 
migrating SID<->UNIX id mappings from one backend to another.

If the RID_COUNTER record does not exist, then these instructions are
unneccessary and the new RID_COUNTER record will be correctly generated
if needed.  



########################
Upgrading from Samba 2.2
########################

This section is provided to help administrators understand the details
involved with upgrading a Samba 2.2 server to Samba 3.0.


Building
--------

Many of the options to the GNU autoconf script have been modified 
in the 3.0 release.  The most noticeable are:

  * removal of --with-tdbsam (is now included by default; see section
    on passdb backends and authentication for more details)
    
  * --with-ldapsam is now on used to provided backward compatible
    parameters for LDAP enabled Samba 2.2 servers.  Refer to the passdb 
    backend and authentication section for more details
  
  * inclusion of non-standard passdb modules may be enabled using
    --with-expsam.  This includes an XML backend and a mysql backend.
      
  * removal of --with-msdfs (is now enabled by default)
  
  * removal of --with-ssl (no longer supported)
  
  * --with-utmp now defaults to 'yes' on supported systems
  
  * --with-sendfile-support is now enabled by default on supported 
    systems
  
    
Parameters
----------

This section contains a brief listing of changes to smb.conf options
in the 3.0.0 release.  Please refer to the smb.conf(5) man page for
complete descriptions of new or modified parameters.

Removed Parameters (order alphabetically):

  * admin log
  * alternate permissions
  * character set
  * client codepage
  * code page directory
  * coding system
  * domain admin group
  * domain guest group
  * force unknown acl user
  * nt smb support
  * post script
  * printer driver
  * printer driver file
  * printer driver location
  * status
  * total print jobs
  * use rhosts
  * valid chars
  * vfs options

New Parameters (new parameters have been grouped by function):

  Remote management
  -----------------
  * abort shutdown script
  * shutdown script

  User and Group Account Management
  ---------------------------------
  * add group script
  * add machine script
  * add user to group script
  * algorithmic rid base
  * delete group script
  * delete user from group script
  * passdb backend
  * set primary group script

  Authentication
  --------------
  * auth methods
  * realm

  Protocol Options
  ----------------
  * client lanman auth
  * client NTLMv2 auth
  * client schannel
  * client signing
  * client use spnego
  * disable netbios
  * ntlm auth
  * paranoid server security
  * server schannel
  * server signing
  * smb ports
  * use spnego

  File Service
  ------------
  * get quota command
  * hide special files
  * hide unwriteable files
  * hostname lookups
  * kernel change notify
  * mangle prefix
  * map acl inherit
  * msdfs proxy
  * set quota command
  * use sendfile
  * vfs objects
  
  Printing
  --------
  * max reported print jobs

  UNICODE and Character Sets
  --------------------------
  * display charset
  * dos charset
  * unicode
  * unix charset
  
  SID to uid/gid Mappings
  -----------------------
  * idmap backend
  * idmap gid
  * idmap uid
  * winbind enable local accounts
  * winbind trusted domains only
  * template primary group
  * enable rid algorithm

  LDAP
  ----
  * ldap delete dn
  * ldap group suffix
  * ldap idmap suffix
  * ldap machine suffix
  * ldap passwd sync
  * ldap trust ids
  * ldap user suffix
  
  General Configuration
  ---------------------
  * preload modules
  * privatedir

Modified Parameters (changes in behavior):

  * encrypt passwords (enabled by default)
  * mangling method (set to 'hash2' by default)
  * passwd chat
  * passwd program
  * restrict anonymous (integer value)
  * security (new 'ads' value)
  * strict locking (enabled by default)
  * winbind cache time (increased to 5 minutes)
  * winbind uid (deprecated in favor of 'idmap uid')
  * winbind gid (deprecated in favor of 'idmap gid')


Databases
---------

This section contains brief descriptions of any new databases 
introduced in Samba 3.0.  Please remember to backup your existing 
${lock directory}/*tdb before upgrading to Samba 3.0.  Samba will 
upgrade databases as they are opened (if necessary), but downgrading 
from 3.0 to 2.2 is an unsupported path.

Name			Description				Backup?
----			-----------				-------
account_policy		User policy settings			yes
gencache		Generic caching db			no
group_mapping		Mapping table from Windows		yes
			groups/SID to unix groups	
winbindd_idmap		ID map table from SIDS to UNIX		yes
			uids/gids.
namecache		Name resolution cache entries		no
netsamlogon_cache	Cache of NET_USER_INFO_3 structure	no
			returned as part of a successful
			net_sam_logon request 
printing/*.tdb		Cached output from 'lpq 		no
			command' created on a per print 
			service basis
registry		Read-only samba registry skeleton	no
			that provides support for exporting
			various db tables via the winreg RPCs


Changes in Behavior
-------------------

The following issues are known changes in behavior between Samba 2.2 and 
Samba 3.0 that may affect certain installations of Samba.

  1)  When operating as a member of a Windows domain, Samba 2.2 would 
      map any users authenticated by the remote DC to the 'guest account'
      if a uid could not be obtained via the getpwnam() call.  Samba 3.0
      rejects the connection as NT_STATUS_LOGON_FAILURE.  There is no 
      current work around to re-establish the 2.2 behavior.
      
  2)  When adding machines to a Samba 2.2 controlled domain, the 
      'add user script' was used to create the UNIX identity of the 
      machine trust account.  Samba 3.0 introduces a new 'add machine 
      script' that must be specified for this purpose.  Samba 3.0 will
      not fall back to using the 'add user script' in the absence of 
      an 'add machine script'
  

######################################################################
Passdb Backends and Authentication
##################################

There have been a few new changes that Samba administrators should be
aware of when moving to Samba 3.0.

  1) encrypted passwords have been enabled by default in order to 
     inter-operate better with out-of-the-box Windows client 
     installations.  This does mean that either (a) a samba account
     must be created for each user, or (b) 'encrypt passwords = no'
     must be explicitly defined in smb.conf.
    
  2) Inclusion of new 'security = ads' option for integration 
     with an Active Directory domain using the native Windows
     Kerberos 5 and LDAP protocols.

     MIT kerberos 1.3.1 supports the ARCFOUR-HMAC-MD5 encryption 
     type which is neccessary for servers on which the 
     administrator password has not been changed, or kerberos-enabled 
     SMB connections to servers that require Kerberos SMB signing.
     Besides this one difference, either MIT or Heimdal Kerberos
     distributions are usable by Samba 3.0.
     

Samba 3.0 also includes the possibility of setting up chains
of authentication methods (auth methods) and account storage 
backends (passdb backend).  Please refer to the smb.conf(5) 
man page for details.  While both parameters assume sane default 
values, it is likely that you will need to understand what the 
values actually mean in order to ensure Samba operates correctly.

The recommended passdb backends at this time are

  * smbpasswd - 2.2 compatible flat file format
  * tdbsam - attribute rich database intended as an smbpasswd
    replacement for stand alone servers
  * ldapsam - attribute rich account storage and retrieval 
    backend utilizing an LDAP directory.  
  * ldapsam_compat - a 2.2 backward compatible LDAP account 
    backend
    
Certain functions of the smbpasswd(8) tool have been split between the 
new smbpasswd(8) utility, the net(8) tool, and the new pdbedit(8) 
utility.  See the respective man pages for details.
    
     
######################################################################
LDAP
####

This section outlines the new features affecting Samba / LDAP 
integration.

New Schema
----------
  
A new object class (sambaSamAccount) has been introduced to replace 
the old sambaAccount.  This change aids us in the renaming of attributes 
to prevent clashes with attributes from other vendors.  There is a 
conversion script (examples/LDAP/convertSambaAccount) to modify and LDIF 
file to the new schema.
  
Example:
  
	$ ldapsearch .... -b "ou=people,dc=..." > old.ldif
	$ convertSambaAccount <DOM SID> old.ldif new.ldif
	
The <DOM SID> can be obtained by running 'net getlocalsid <DOMAINNAME>' 
on the Samba PDC as root.
    
The old sambaAccount schema may still be used by specifying the 
"ldapsam_compat" passdb backend.  However, the sambaAccount and
associated attributes have been moved to the historical section of
the schema file and must be uncommented before use if needed.
The 2.2 object class declaration for a sambaAccount has not changed
in the 3.0 samba.schema file. 
  
Other new object classes and their uses include:
  
  * sambaDomain - domain information used to allocate rids 
    for users and groups as necessary.  The attributes are added
    in 'ldap suffix' directory entry automatically if 
    an idmap uid/gid range has been set and the 'ldapsam'
    passdb backend has been selected.
      
  * sambaGroupMapping - an object representing the 
    relationship between a posixGroup and a Windows
    group/SID.  These entries are stored in the 'ldap 
    group suffix' and managed by the 'net groupmap' command.
    
  * sambaUnixIdPool - created in the 'ldap idmap suffix' entry 
    automatically and contains the next available 'idmap uid' and 
    'idmap gid'
    
  * sambaIdmapEntry - object storing a mapping between a 
    SID and a UNIX uid/gid.  These objects are created by the 
    idmap_ldap module as needed.

  * sambaSidEntry - object representing a SID alone, as a Structural
    class on which to build the sambaIdmapEntry.

    
New Suffix for Searching
------------------------
  
The following new smb.conf parameters have been added to aid in directing
certain LDAP queries when 'passdb backend = ldapsam://...' has been
specified.

  * ldap suffix         - used to search for user and computer accounts
  * ldap user suffix    - used to store user accounts
  * ldap machine suffix - used to store machine trust accounts
  * ldap group suffix   - location of posixGroup/sambaGroupMapping entries
  * ldap idmap suffix   - location of sambaIdmapEntry objects

If an 'ldap suffix' is defined, it will be appended to all of the 
remaining sub-suffix parameters.  In this case, the order of the suffix
listings in smb.conf is important.  Always place the 'ldap suffix' first
in the list.  

Due to a limitation in Samba's smb.conf parsing, you should not surround 
the DN's with quotation marks.


IdMap LDAP support
------------------

Samba 3.0 supports an ldap backend for the idmap subsystem.  The 
following options would inform Samba that the idmap table should be
stored on the directory server onterose in the "ou=idmap,dc=plainjoe,
dc=org" partition.

 [global]
    ...
    idmap backend     = ldap:ldap://onterose/
    ldap idmap suffix = ou=idmap,dc=plainjoe,dc=org
    idmap uid         = 40000-50000
    idmap gid         = 40000-50000

This configuration allows winbind installations on multiple servers to
share a uid/gid number space, thus avoiding the interoperability problems
with NFS that were present in Samba 2.2.
    


######################################################################
Trust Relationships and a Samba Domain
######################################

Samba 3.0.0beta2 is able to utilize winbindd as the means of 
allocating uids and gids to trusted users and groups.  More
information regarding Samba's support for establishing trust 
relationships can be found in the Samba-HOWTO-Collection included
in the docs/ directory of this release.

First create your Samba PDC and ensure that everything is 
working correctly before moving on the trusts.

To establish Samba as the trusting domain (named SAMBA) from a Windows NT
4.0 domain named WINDOWS:

  1) create the trust account for SAMBA in "User Manager for Domains"
  2) connect the trust from the Samba domain using
     'net rpc trustdom establish GLASS'

To create a trustlationship with SAMBA as the trusted domain:

  1) create the initial trust account for GLASS using
     'smbpasswd -a -i GLASS'.  You may need to create a UNIX
     account for GLASS$ prior to this step (depending on your
     local configuration).
  2) connect the trust from a WINDOWS DC using "User Manager
     for Domains"

Now join winbindd on the Samba PDC to the SAMBA domain using
the normal steps for adding a Samba server to an NT4 domain:
(note that smbd & nmbd must be running at this point)

   root# net rpc join -U root
   Password: <enter root password from smbpasswd file here>

Start winbindd and test the join with 'wbinfo -t'.

Now test the trust relationship by connecting to the SAMBA DC
(e.g. POGO) as a user from the WINDOWS domain:

   $ smbclient //pogo/netlogon -U Administrator -W WINDOWS
   Password:

Now connect to the WINDOWS DC (e.g. CRYSTAL) as a Samba user:

   $ smbclient //crystal/netlogon -U root -W WINDOWS
   Password:

######################################################################
Changes in Winbind
##################

Beginning with Samba3.0.0beta3, winbindd has been given new account
manage functionality equivalent to the 'add user script' family of
smb.conf parameters.  The idmap design has also been changed to 
centralize control of foreign SID lookups and matching to UNIX 
uids and gids.


Brief Description of Changes
----------------------------

1) The sid_to_uid() family of functions (smbd/uid.c) have been 
   reverted to the 2.2.x design.  This means that when resolving a 
   SID to a UID or similar mapping:

        a) First consult winbindd
        b) perform a local lookup only if winbindd fails to
           return a successful answer

   There are some variations to this, but these two rules generally
   apply.

2) All idmap lookups have been moved into winbindd.  This means that
   a server must run winbindd (and support NSS) in order to achieve
   any mappings of SID to dynamically allocated UNIX ids.  This was
   a conscious design choice.

3) New functions have been added to winbindd to emulate the 'add user 
   script' family of smbd functions without requiring that external
   scripts be defined.  This functionality is controlled by the 'winbind 
   enable local accounts' smb.conf parameter (enabled by default).

   However, this account management functionality is only supported 
   in a local tdb (winbindd_idmap.tdb).  If these new UNIX accounts 
   must be shared among multiple Samba servers (such as a PDC and BDCs), 
   it will be necessary to define your own 'add user script', et. al.
   programs that place the accounts/groups in some form of directory
   such as NIS or LDAP.  This requirement was deemed beyond the scope
   of winbind's account management functions.  Solutions for 
   distributing UNIX system information have been deployed and tested 
   for many years.  We saw no need to reinvent the wheel.

4) A member of a Samba controlled domain running winbindd is now able 
   to map domain users directly onto existing UNIX accounts while still
   automatically creating accounts for trusted users and groups.  This
   behavior is controlled by the 'winbind trusted domains only' smb.conf
   parameter (disabled by default to provide 2.2.x winbind behavior).

5) Group mapping support is wrapped in the local_XX_to_XX() functions
   in smbd/uid.c.  The reason that group mappings are not included
   in winbindd is because the purpose of Samba's group map is to
   match any Windows SID with an existing UNIX group.  These UNIX
   groups can be created by winbindd (see next section), but the
   SID<->gid mapping is retreived by smbd, not winbindd.


Examples
--------

* security = server running winbindd to allocate accounts on demand

* Samba PDC running winbindd to handle the automatic creation of UNIX
  identities for machine trust accounts

* Automtically creating UNIX user and groups when migrating a Windows NT
  4.0 PDC to a Samba PDC.  Winbindd must be running when executing
  'net rpc vampire' for this to work.

   
######################################################################
Known Issues
############

* The smbldap perl scripts for managing user entries in an LDAP
  directory have not be updated to function with the Samba 3.0
  schema changes.  This (or an equivalent solution) work is planned
  to be completed prior to the stable 3.0.0 release.

Please refer to https://bugzilla.samba.org/ for a current list of bugs 
filed against the Samba 3.0 codebase.


######################################################################
Reporting bugs & Development Discussion
#######################################

Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.

If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored.  

A new bugzilla installation has been established to help support the 
Samba 3.0 community of users.  This server, located at 
https://bugzilla.samba.org/, will replace the existing jitterbug server 
and the old http://bugs.samba.org now points to the new bugzilla server.