I think the "Error was Transport endpoint is not connected" warnings are sometimes misleading. Do you have any control over the samba config (smb.conf) on the NAS ? On regular samba installs, changing the default port settings can cause more problems.

Windows 7 will try to connect on port 445 (SMB or CIFS over tcp/ip), and will then reconnect to ports 137/138/139 (SMB over netbios over tcp/ip) since samba 3.x doesn't handle the newer SMB-over-tcp/ip. Disabling 445 on the server seems to cause more problems than it solves.


Are you able to connect via IP ?  e.g net use \\qnap_ip\share ?

I had problems in the past when I disabled port 445 on samba servers. Remote users (no netbios broadcasts permitted) could connect via IP but not via name. For the name only connections, packet monitoring would show packets getting thru the the server but the exchange between client and server not being completed. For clients connecting via IP, the client would send packets to server, server respond, and then clients responded.










On 05/07/13 03:53, Ed Strong wrote:
Hi,

I'm re-posting this (with some more info) as I don't think the original got
through as I wasn't
signed up to the samba list.

this is my first foray in samba (and newsgroups) so go easy :)
I've started reading the o'reilly samba book but finding it hard going.

Anyway I'm trying to map a network drive from a windows 7 pro client to a
QNAP NAS with the command:
   net use s: \\qnap\share

I've posted on several forums and got good advice but the problem remains.
Rather than repost all the detail, please see my original posts:

http://forum.qnap.com/viewtopic.php?f=185&t=74639
http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/11d35b0c-ac95-489f-b5d1-0486b9774603
http://www.edugeek.net/forums/windows-7/112309-map-network-drive-nas-but-get-error-64-58-a.html

I've managed to ssh onto the QNAP via putty and found this in the logs
(getpeername failed)

[/var/log] # pwd
/var/log
[/var/log] # tail -f log.smbd
[2013/05/01 09:36:17.135999,  0] lib/util_sock.c:474(read_fd_
with_timeout)
[2013/05/01 09:36:17.136096,  0]
lib/util_sock.c:1440(get_peer_addr_internal)
   getpeername failed. Error was Transport endpoint is not connected
   read_fd_with_timeout: client 0.0.0.0 read error = Connection reset by
peer.
[2013/05/01 09:36:17.137700,  1] smbd/server.c:299(remove_child_pid)
   Scheduled cleanup of brl and lock database after unclean shutdown
[2013/05/01 09:36:17.178522,  1] smbd/service.c:1073(make_connection_snum)
   172.24.120.139 (172.24.120.139) connect to service Staff initially as
user DOMAIN+admin (uid=10001423, gid=10000514) (pid

25771)
[2013/05/01 09:36:17.179093,  0] lib/util_sock.c:474(read_fd_with_timeout)
[2013/05/01 09:36:17.179173,  0]
lib/util_sock.c:1440(get_peer_addr_internal)
   getpeername failed. Error was Transport endpoint is not connected
   read_fd_with_timeout: client 0.0.0.0 read error = Connection reset by
peer.
[2013/05/01 09:36:17.179289,  1] smbd/service.c:1254(close_cnum)
   172.24.120.139 (172.24.120.139) closed connection to service Staff
[2013/05/01 09:36:37.142714,  1] smbd/server.c:272(cleanup_timeout_fn)
   Cleaning up brl and lock database after unclean shutdown


The QNAP's samba version appears to be 3.5.2:

[/var/log] # ps -ef | grep smb
  4016 admin      3104 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4017 admin      3728 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4366 admin      1840 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4877 admin      3300 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4902 admin      3952 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4978 admin      4132 S   /usr/local/samba/sbin/smbd -l /var/log -D -s
/etc/config/smb.conf
  4979 admin      3356 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4980 admin      1224 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  4995 admin      1016 S   /usr/local/samba/sbin/smbd -l /var/log -D -s
/etc/config/smb.conf
  5063 admin      2068 S   /usr/local/samba/sbin/winbindd -s
/etc/config/smb.conf
  9509 admin      1664 S   /usr/local/samba/sbin/nmbd -l /var/log -D -s
/etc/config/smb.conf
25540 admin       544 S   grep smb
[/var/log] # /usr/local/samba/sbin/smbd -V
Version 3.5.2


I've also installed MS network monitor on two clients and did a capture
whilst running the command
    net use s:\ \\saturn\staff

I've posted three screenshots here:

https://plus.google.com/photos/108734482620454690509/albums/5875135861918839393?authkey=CJ3lwKu2xJqMyQE

Basically, Worked.png shows the SMB frames on a PC where the net use
command worked
and Failed.png shows the SMB frames on a PC where the net use command did
not work

It looks to me like the first 6 SMB frames are identical. Then things start
to change

On the working client we continue with frame 10113 which is a
   Dfsc: Get DFS Referral Request

but the failing client continues with some TCP frames (see
tcp-frames154-157.png) 154 to 157
before it seems to start the negotiation again at frame 158

Not sure how to troubleshoot this further so any advice welcome.

Thanks
Ed

PS I initially tried to post this on google group linux.samba but was
rejected by the
moderation robot which said "Please submit your message to the mailing list
address".
I did this with attached png's but failed due to file size so hopefully 3rd
time lucky!

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