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authorJelmer Vernooij <jelmer@samba.org>2003-05-01 13:58:23 +0000
committerJelmer Vernooij <jelmer@samba.org>2003-05-01 13:58:23 +0000
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-<chapter id="errors">
-
-<title>Common errors</title>
-
-<sect1>
-<title>Not listening for calling name</title>
-
-<para>
-<programlisting>
-Session request failed (131,129) with myname=HOBBES destname=CALVIN
-Not listening for calling name
-</programlisting>
-</para>
-
-<para>
-If you get this when talking to a Samba box then it means that your
-global "hosts allow" or "hosts deny" settings are causing the Samba
-server to refuse the connection.
-</para>
-
-<para>
-Look carefully at your "hosts allow" and "hosts deny" lines in the
-global section of smb.conf.
-</para>
-
-<para>
-It can also be a problem with reverse DNS lookups not functioning
-correctly, leading to the remote host identity not being able to
-be confirmed, but that is less likely.
-</para>
-</sect1>
-
-<sect1>
-<title>System Error 1240</title>
-
-<para>
-System error 1240 means that the client is refusing to talk
-to a non-encrypting server. Microsoft changed WinNT in service
-pack 3 to refuse to connect to servers that do not support
-SMB password encryption.
-</para>
-
-<para>There are two main solutions:
-<simplelist>
-<member>enable SMB password encryption in Samba. See the encryption part of
-the samba HOWTO Collection</member>
-
-<member>disable this new behaviour in NT. See the section about
-Windows NT in the chapter "Portability" of the samba HOWTO collection
-</member>
-</simplelist>
-</para>
-
-</sect1>
-
-<sect1>
-<title>smbclient ignores -N !</title>
-
-<para>
-<quote>When getting the list of shares available on a host using the command
-<command>smbclient -N -L</command>
-the program always prompts for the password if the server is a Samba server.
-It also ignores the "-N" argument when querying some (but not all) of our
-NT servers.
-</quote>
-</para>
-
-<para>
-No, it does not ignore -N, it is just that your server rejected the
-null password in the connection, so smbclient prompts for a password
-to try again.
-</para>
-
-<para>
-To get the behaviour that you probably want use <command>smbclient -L host -U%</command>
-</para>
-
-<para>
-This will set both the username and password to null, which is
-an anonymous login for SMB. Using -N would only set the password
-to null, and this is not accepted as an anonymous login for most
-SMB servers.
-</para>
-
-</sect1>
-
-<sect1>
-<title>The data on the CD-Drive I've shared seems to be corrupted!</title>
-
-<para>
-Some OSes (notably Linux) default to auto detection of file type on
-cdroms and do cr/lf translation. This is a very bad idea when use with
-Samba. It causes all sorts of stuff ups.
-</para>
-
-<para>
-To overcome this problem use conv=binary when mounting the cdrom
-before exporting it with Samba.
-</para>
-
-</sect1>
-
-<sect1>
-<title>Why can users access home directories of other users?</title>
-
-<para>
-<quote>
-We are unable to keep individual users from mapping to any other user's
-home directory once they have supplied a valid password! They only need
-to enter their own password. I have not found *any* method that I can
-use to configure samba to enforce that only a user may map their own
-home directory.
-</quote>
-</para>
-
-<para><quote>
-User xyzzy can map his home directory. Once mapped user xyzzy can also map
-*anyone* elses home directory!
-</quote></para>
-
-<para>
-This is not a security flaw, it is by design. Samba allows
-users to have *exactly* the same access to the UNIX filesystem
-as they would if they were logged onto the UNIX box, except
-that it only allows such views onto the file system as are
-allowed by the defined shares.
-</para>
-
-<para>
-This means that if your UNIX home directories are set up
-such that one user can happily cd into another users
-directory and do an ls, the UNIX security solution is to
-change the UNIX file permissions on the users home directories
-such that the cd and ls would be denied.
-</para>
-
-<para>
-Samba tries very hard not to second guess the UNIX administrators
-security policies, and trusts the UNIX admin to set
-the policies and permissions he or she desires.
-</para>
-
-<para>
-Samba does allow the setup you require when you have set the
-"only user = yes" option on the share, is that you have not set the
-valid users list for the share.
-</para>
-
-<para>
-Note that only user works in conjunction with the users= list,
-so to get the behavior you require, add the line :
-<programlisting>
-users = %S
-</programlisting>
-this is equivalent to:
-<programlisting>
-valid users = %S
-</programlisting>
-to the definition of the [homes] share, as recommended in
-the smb.conf man page.
-</para>
-
-</sect1>
-
-<sect1>
-<title>Until a few minutes after samba has started, clients get the error "Domain Controller Unavailable"</title>
-<para>
-A domain controller has to announce on the network who it is. This usually takes a while.
-</para>
-</sect1>
-
-<sect1>
-<title>I'm getting "open_oplock_ipc: Failed to get local UDP socket for address 100007f. Error was Cannot assign requested" in the logs</title>
-<para>Your loopback device isn't working correctly. Make sure it's running.
-</para>
-</sect1>
-
-</chapter>