Samba 4.0.0

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News del 12 Dicembre 12 Autore: Gianplugged
Samba 4.0.0
Note di rilascio:

This is is the first stable release of Samba 4.0.

This release contains the best of all of Samba´s technology parts, both a file server (that you can reasonably expect to upgrade existing Samba 3.x releases to) and the AD domain controller work previously known as ´Samba4´.

Major enhancements in Samba 4.0.0 include:

Active Directory services

Samba 4.0 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.

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.

When running an AD DC, you only need to run ´samba´ (not smbd/nmbd/winbindd), as the required services are co-coordinated by this master binary. The tool to administer the Active Directory services is called ´samba-tool´.

A short guide to setting up Samba 4 as an AD DC can be found on the wiki:

File Services

Samba 4.0.0 ships with two distinct file servers.  We now use the file server from the Samba 3.x series ´smbd´ for all file serving by default.

Samba 4.0 also ships with the ´NTVFS´ file server.  This file server is what was used prior to the beta2 release of Samba 4.0, and is tuned to match the requirements of an AD domain controller.  We continue to support this, not only to provide continuity to installations that have deployed it as part of an AD DC, but also as a running example of the NT-FSA architecture we expect to move smbd to in the longer term.

For pure file server work, the binaries users would expect from that series (smbd, nmbd, winbindd, smbpasswd) continue to be available.


As DNS is an integral part of Active Directory, we also provide two DNS solutions, a simple internal DNS server for ´out of the box´ configurations and a more elaborate BIND plugin using the BIND DLZ mechanism in versions 9.8 and 9.9. During the provision, you can select which backend to use. With the internal backend, your DNS server is good to go. If you chose the BIND_DLZ backend, a configuration file will be generated for bind to make it use this plugin, as well as a file explaining how to set up bind.


To provide accurate timestamps to Windows clients, we integrate with the NTP project to provide secured NTP replies.  To use you need to start ntpd and configure it with the ´restrict ... ms-sntp´ and ntpsigndsocket options.

Python Scripting Interface

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.

Known Issues

- Replication of DNS data from one AD server to another may not work.  The DNS data used by the internal DNS server and bind9_dlz is stored  in an application partition in our directory.  The replication of  this partition is not yet reliable.

- Replication may fail on FreeBSD due to getaddrinfo() rejecting names  containing _.  A workaround will be in a future release.

- samba_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.

- Domain member support in the ´samba´ binary is in its 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.

- There is no NetBIOS browsing support (network neighbourhood)  available for the AD domain controller.  (Support in nmbd and smbd  for classic domains and member/standalone servers is unchanged).

- 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.

- Linux inotify will now only be supported on systems where glibc also supports  it (for details, please refer to bug #8850).
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Categoria: Linux

Licenza: Open source

OS: Linux

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