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README
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1995-04-28
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This is version 1.8 of Samba, the free SMB client and server for unix.
>>>> Please read THE WHOLE of this file as it gives important information
>>>> about the configuration and use of Samba.
This software is freely distributable under the GNU public license, a
copy of which you should have received with this software (in a file
called COPYING).
CONTRIBUTIONS
=============
If you want to contribute to the development of the software then
please join the mailing list. I accept patches (preferably in unified
diff format) and am always glad to receive feedback or suggestions.
You could also send hardware/software/money/jewelry or pizza
vouchers directly to me. The pizza vouchers would be especially
welcome :-)
If you like the documentation or the smb.conf configuration file
format then you should mail Karl.Auer@anu.edu.au to say thanks.
Remember that free software of this kind lives or dies by the response
we get. If noone tells us they like it then we'll probably move onto
something else.
Andrew Tridgell
Andrew.Tridgell@anu.edu.au
3 Ballow Crescent
Macgregor, A.C.T.
2615 Australia
MORE INFO
=========
DOCUMENTATION
-------------
There is quite a bit of documentation included with the package,
including man pages, and lots of .txt files with hints and useful
info.
FTP SITE
--------
The main anonymous ftp distribution site for this software is
nimbus.anu.edu.au in the directory pub/tridge/samba/.
MAILING LIST
------------
There is a mailing list for discussion of Samba. To subscribe send
mail to listproc@listproc.anu.edu.au with a body of "subscribe samba
Your Name"
To send mail to everyone on the list mail to samba@listproc.anu.edu.au
There is also an announcement mailing list where I announce new
versions. To subscribe send mail to listproc@listproc.anu.edu.au with
a body of "subscribe samba-announce Your Name". All announcements also
go to the samba list.
NEWS GROUP
----------
You might also like to look at the usenet news group
comp.protocols.smb as it often contains lots of useful info and is
frequented by lots of Samba users. The newsgroup was initially setup
by people on the Samba mailing list. It is not, however, exclusive to
Samba, it is a forum for discussing the SMB protocol (which Samba
implements).
WEB SITE
--------
A Samba WWW site has been setup with lots of useful info. Connect to:
http://lake.canberra.edu.au/pub/samba/
It is maintained by Paul Blackman (thanks Paul!). You can contact him
at ictinus@lake.canberra.edu.au.
NOTE ABOUT PASSWORDS
====================
Unix systems use a wide variety of methods for checking the validity
of a password. This is primarily controlled with the Makefile defines
mentioned in the Makefile.
Also note that some clients (notably WfWg) uppercase the password
before sending it. The server tries the password as it receives it and
also after lowercasing it.
The Samba server can also be configured to try different
upper/lowercase combinations. This is controlled by the [global]
parameter "password level". A level of N means to try all combinations
up to N uppercase characters in the password. A high value can chew a
fair bit of CPU time and can lower the security of your system. Do not
use this options unless you really need it - the time taken for
password checking can become so high that clients time out.
If you do use the "password level" option then you might like to use
-DUFC_CRYPT in your Makefile. On some machine this makes password
checking _much_ faster. This is also useful if you use the @group
syntax in the user= option.
If your site uses AFS (the Andrew File System), you can use the AFS section
in the Makefile. This will first attempt to authenticate a username and
password to AFS. If that succeeds, then the associated AFS rights will be
granted. Otherwise, the password checking routine falls back to whatever
Unix password checking method you are using. Note that the AFS code is
only written and tested for AFS 3.3 and later.
SECURITY = SERVER
=================
Samba can use a remote server to do it's username/password
validation. This allows you to have one central machine (for example a
NT box) control the passwords for the Unix box.
See the section on "security =" in smb.conf(5) for details.
NOTE ABOUT THE USER= OPTION
===========================
Many people have been confused by the user= option in smb.conf. It is
there to overcome client limitations in that some clients may not
correctly supply a username for various reasons. This was mostly the
case when people used the COREPLUS protocol, which is now unlikely.
In most cases I expect people not to use a user= line at all. In fact,
using a user= line can actually lower the security of your system as
it means people trying to break in can try lots of accounts
simultaneously.
Note that a user= line does not specify what users may connect - it
merely adds to the list of usernames that the Samba server checks
against the incoming password to try and find a match, in addition to
any usernames that may have been passed by the client. Only when used
with the "only user=yes" option does it actually restrict who can
connect.
A much better way of restricting what users can connect is to use the
"valid users=" and "invalid users=" lines to exactly specify what
users (and groups of users) are allowed to connect.
MAPPING USERNAMES
=================
If you have different usernames on the PCs and the unix server then
take a look at the "username map" option. See the smb.conf man page
for details.
NOTE ABOUT DEBUGLEVEL
=====================
WARNING: A high debug level can severely damage your performance and
can produce enourmous log files.
In particular on AIX using a debuglevel above 1 produces a VERY slow
server. I think this is because fflush() is very slow on AIX.
In most cases a level of 1 or 2 is appropriate.
BACKING UP PCs
==============
Ricky Poulten (poultenr@logica.co.uk) has written a "tar" extension to
smbclient that allows you to back up and restore your lan-manager
compatible network using smbclient.
You can fetch his extension from the "contributed" section on
nimbus. The URL is
ftp://nimbus.anu.edu.au/pub/tridge/samba/contributed/