SMB2 not used with \\server\share but with \\server.domain\share

Andrew Bartlett abartlet at
Mon Jun 13 05:50:20 MDT 2011

On Sun, 2011-06-12 at 21:43 +0200, Gerhard Wiesinger wrote:
> On Sun, 12 Jun 2011, Zombie Ryushu wrote:
> > Are we talking about SMB (Port 139) or SMBX (Port 445?) or SMB2?
> Wireshark trace has only traffic on port 445 (with SMB and SMB2).
> netstat -an | egrep '139|445' | grep LISTEN
> tcp        0      0   *                   LISTEN
> tcp        0      0   *                   LISTEN
> Any other information needed?
> BTW: What's the difference between SMB and SMBX? Only Ports?

Firstly, to limit confusion, there is no such thing as SMBX.  But the
fact that all traffic is on port 445 is promising, as it has already
been found that windows refuses SMB2 traffic on port 139 (at least in
some situations):

As to why a client would simply not choose SMB2 when connected to 445
and available, that is a mystery that we may need to ask Microsoft

In any case, Volker is your best resource here, as he is one of the
Samba Team's most experienced developers, particularly as regards our
SMB and SMB2 implementations.

Andrew Bartlett

Andrew Bartlett                      
Authentication Developer, Samba Team 

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