- =================================
- Release Notes for Samba 3.6.0pre1
- July 28, 2010
- =================================
+What's new in Samba 4 alpha20
+=============================
+Samba 4.0 will be the next version of the Samba suite and incorporates
+all the technology found in both the Samba4 alpha series and the
+stable 3.x series. The primary additional features over Samba 3.6 are
+support for the Active Directory logon protocols used by Windows 2000
+and above.
-This is the first preview release of Samba 3.6. This is *not*
-intended for production environments and is designed for testing
-purposes only. Please report any defects via the Samba bug reporting
-system at https://bugzilla.samba.org/.
+SECURITY RELEASE
+================
+This is a security release in order to address CVE-2012-2111
+(Incorrect permission checks when granting/removing privileges can
+compromise file server security).
-Major enhancements in Samba 3.6.0 include:
+o CVE-2012-2111:
+ Samba 3.4.x to 3.6.4 are affected by a
+ vulnerability that allows arbitrary users
+ to modify privileges on a file server.
+This is in regards to the smbd file server, which is shipped in Samba
+4.0 alpha. The AD DC is not directly impacted, as the LSA
+implementation differs.
-Changed security defaults
--------------------------
+WARNINGS
+========
-Samba 3.6 has adopted a number of improved security defaults that will
-impact on existing users of Samba.
+Samba4 alpha20 is not a final Samba release, however we are now making
+good progress towards a Samba 4.0 release, of which this is a preview.
+Be aware the this release contains both the technology of Samba 3.6
+(that you can reasonably expect to upgrade existing Samba 3.x releases
+to) and the AD domain controller work previously known as 'samba4'.
- client ntlmv2 auth = yes
- client use spnego principal = no
- send spnego principal = no
+While binaries for the stable file server are provided in this
+release, for a stable, supported file server, Samba3 domain or AD
+domain member installation, please run a Samba 3.x release, as we are
+still bedding down the new single build system.
-The impact of 'client ntlmv2 auth = yes' is that by default we will not
-use NTLM authentication as a client. This applies to the Samba client
-tools such as smbclient and winbind, but does not change the separately
-released in-kernel CIFS client. To re-enable the poorer NTLM encryption
-set '--option=clientusentlmv2auth=no' on your smbclient command line, or
-set 'client ntlmv2 auth = no' in your smb.conf
+Samba4 is subjected to an awesome battery of tests on an automated
+basis, we have found Samba 4.0 to be very stable in it's behavior.
+However, we still recommend against upgrading production servers from
+Samba 3.x release to Samba 4.0 alpha at this stage.
-The impact of 'client use spnego principal = no' is that we may be able
-to use Kerberos to communicate with a server less often in smbclient,
-winbind and other Samba client tools. We may fall back to NTLMSSP in
-more situations where we would previously rely on the insecure
-indication from the 'NegProt' CIFS packet. This mostly occursed when
-connecting to a name alias not recorded as a servicePrincipalName for
-the server. This indication is not available from Windows 2008 or later
-in any case, and is not used by modern Windows clients, so this makes
-Samba's behaviour consistent with other clients and against all servers.
+If you are upgrading, or looking to develop, test or deploy Samba 4.0
+alpha releases, you should backup all configuration and data.
-The impact of 'send spnego principal = no' is to match Windows 2008 and
-not to send this principal, making existing clients give more consistent
-behaviour (more likely to fall back to NTLMSSP) between Samba and
-Windows 2008, and between Windows versions that did and no longer use
-this insecure hint.
+NEW FEATURES
+============
+Samba 4.0 alpha supports the server-side of the Active Directory logon
+environment used by Windows 2000 and later, so we can do full domain
+join and domain logon operations with these clients.
-SMB2 support
-------------
+Our Domain Controller (DC) implementation includes our own built-in
+LDAP server and Kerberos Key Distribution Center (KDC) as well as the
+Samba3-like logon services provided over CIFS. We correctly generate
+the infamous Kerberos PAC, and include it with the Kerberos tickets we
+issue.
-SMB2 support in 3.6.0 is fully functional (with one omission),
-and can be enabled by setting:
+Samba 4.0 alpha ships with two distinct file servers. The file server
+from the Samba 3.x series is 'smbd', and works with the binaries users
+would expect from that series (nmbd, winbindd, smbpasswd).
-max protocol = SMB2
+Samba 4.0 also ships with a new file server, which is tuned to match
+the requirements of an AD domain controller. Users should not use the
+file server in the 'samba' binary for non-DC related tasks.
-in the [global] section of your smb.conf and re-starting
-Samba. All features should work over SMB2 except the modification
-of user quotas using the Windows quota management tools.
+A new scripting interface has been added to Samba 4, allowing Python
+programs to interface to Samba's internals, and many tools and
+internal workings of the DC code is now implemented in python.
-As this is the first release containing what we consider
-to be a fully featured SMB2 protocol, we are not enabling
-this by default, but encourage users to enable SMB2 and
-test it. Once we have enough confirmation from Samba
-users and OEMs that SMB2 support is stable in wide user
-testing we will enable SMB2 by default in a future Samba
-release.
+CHANGES SINCE alpha19
+=====================
-Internal Winbind passdb changes
--------------------------------
+For a list of changes since alpha 19, please see the git log.
-Winbind has been changed to use the internal samr and lsa rpc pipe to get
-local user and group information instead of calling passdb functions. The
-reason is to use more of our infrastructure and test this infrastructure by
-using it. With this approach more code in Winbind is shared.
+$ git clone git://git.samba.org/samba.git
+$ cd samba.git
+$ git log samba-4.0.0alpha19..samba-4.0.0alpha20
+Some major user-visible changes include:
-New Spoolss code
-----------------
+Improvements to the 'samba-tool domain samba3upgrade' and
+samba_upgradedns tools
-The spoolss and the old RAP printing code have been completely
-overhauled and refactored.
+Stability improvements in the Samba4 winbind implementation (that
+used in the AD DC mode).
-All calls from lanman/printing code has been changed to go through the
-spoolss RPC interfaces, this allows us to keep all checks in one place
-and avoid special cases in the main printing code.
-Printing code has been therefore confined within the spoolss code.
+The BIND 9 DLZ plugin is now compatible with both BIND 9.8, and BIND 9.9.
-All the printing code, including the spoolss RPC interfaces has been
-changed to use the winreg RPC interfaces to store all data.
-All data has been migrated from custom, arbitrary TDB files to the
-registry interface. This transition allow us to present correct data to
-windows client accessing the server registry through the winreg RPC
-interfaces to query for printer data. Data is served out from a real
-registry implementation and therefore arguably 100% forward compatible.
+dbcheck and runtime protection for the fSMORoleOwner attribute. This
+allows us to recover from a situation where the fSMORoleOwner is
+deleted.
-Migration code from the previous TDB files formats is provided. This
-code is automatically invoked the first time the new code is run on the
-server. Although manual migration is also available using the 'net
-printer migrate' command.
+Support for storing the posixAccount and other auxiliary objectClass
+values (the values are not used by Samba as an AD DC at this stage,
+but may be used by clients).
-These changes not only make all the spoolss code much more closer to
-"the spec", it also greatly improves our internal testing of both
-spoolss and winreg interfaces, and reduces overall code duplication.
-As part of this work, new tests have been also added to increase
-coverage.
+Some major but less visible changes include:
-This code will also allow, in future, an easy transition to split out
-the spooling functions into a separate daemon for those OEMs that do not
-need printing functionality in their appliances, reducing the code
-footprint.
+Continued early implementation work on the SMB 2.2 protocol client and server as
+the team improves and develops support these new protocols.
-
-SMB Traffic Analyzer
---------------------
-
-Added the new SMB Traffic Analyzer (SMBTA) VFS module protocol 2
-featuring encryption, multiple arguments, and easier parseability. A new
-tool 'smbta-util' has been created to control the encryption behaviour
-of SMBTA. For compatibility, SMBTA by default operates on version 1.
-There are programs consuming the data that the module sends.
-
-More information can be found on
-http://holger123.wordpress.com/smb-traffic-analyzer/
+Initial work to build Samba using MIT kerberos in the top level waf
+build system. This is not complete at this time, but good progress is
+being made.
-NFS quota backend on Linux
---------------------------
+KNOWN ISSUES
+============
-A new nfs quota backend for Linux has been added that is based
-on the existing Solaris/FreeBSD implementation. This allows samba
-to communicate correct diskfree information for nfs imports that
-are re-exported as samba shares.
+- upgradeprovision should not be run when upgrading to this release
+ from a recent release. No important database format changes have
+ been made since alpha16.
+- Installation on systems without a system iconv (and developer
+ headers at compile time) is known to cause errors when dealing with
+ non-ASCII characters.
-######################################################################
-Changes
-#######
+- In some situations, group members may not be upgraded by the
+ samba-tool domain samba3upgrade tool
-smb.conf changes
-----------------
+- Domain member support in the 'samba' binary is in it's infancy, and
+ is not comparable to the support found in winbindd. As such, do not
+ use the 'samba' binary (provided for the AD server) on a member
+ server.
- Parameter Name Description Default
- -------------- ----------- -------
+- There is no printing support in the 'samba' binary (use smbd instead)
- async smb echo handler New No
- client ntlmv2 auth Changed Default Yes
- client use spnego principal New No
- ctdb locktime warn threshold New 0
- idmap alloc backend Removed
- log writeable files on exit New No
- multicast dns register New Yes
- ncalrpc dir New
- send spnego principal New No
- smb2 max credits New 128
- smb2 max read New 1048576
- smb2 max trans New 1048576
- smb2 max write New 1048576
- strict allocate Changed Default Yes
- username map cache time New 0
- winbind max clients New 200
+- There is no NetBIOS browsing support (network neighbourhood) in the
+ 'samba' binary (use nmbd and smbd instead)
+- Clock Synchronisation is critical. Many 'wrong password' errors are
+ actually due to Kerberos objecting to a clock skew between client
+ and server. (The NTP work in the previous alphas are partly to assist
+ with this problem).
-######################################################################
+- The DRS replication code may fail. Please contact the team if you
+ experience issues with DRS replication, as we have fixed many issues
+ here in response to feedback from our production users.
+
+RUNNING Samba 4.0 as an AD DC
+=============================
+
+A short guide to setting up Samba 4 as an AD DC can be found on the wiki:
+
+ http://wiki.samba.org/index.php/Samba4/HOWTO
+
+#######################################
Reporting bugs & Development Discussion
#######################################
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. All bug reports should
-be filed under the Samba 3.6 product in the project's Bugzilla
+be filed under the Samba 4.0 product in the project's Bugzilla
database (https://bugzilla.samba.org/).
git.samba.org / kai / samba-autobuild / .git / blobdiff