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

Zombie Ryushu zombie_ryushu at
Mon Jun 13 04:29:58 MDT 2011

In the past, \\server\share indicated an NT style SMB server (Port 139) where the name lookup was done with WINS while \\server.domain\share used DNS and SMBX (Port 445)  I'm not sure how SMB2 changes this.

--- On Mon, 6/13/11, Gerhard Wiesinger <lists at> wrote:

From: Gerhard Wiesinger <lists at>
Subject: Re: SMB2 not used with \\server\share but with \\server.domain\share
To: "Volker Lendecke" <Volker.Lendecke at SerNet.DE>
Cc: samba-technical at
Date: Monday, June 13, 2011, 7:43 AM

On Mon, 13 Jun 2011, Volker Lendecke wrote:

> On Sun, Jun 12, 2011 at 09:43:03PM +0200, Gerhard Wiesinger wrote:
> Both run on 445, SMB1/2 is negotiated in the very first
> packets. SMB1 definitely works over 139, not sure Windows
> would do it as well over that port. But there's no reason
> from within the protocol that would prevent it.

Yes, I'm seening the negotiation on protocol in both cases. But the problem is that Vista doesn't request SMB2 in the negotiation phase when \\server\share syntax is used but on \\server.domain\share syntax it is offered by Vista and used by Samba.

Are that maybe some backward compability issues from the protocol and/or Vista that when \\server\share syntax is used it CAN'T be SMB2?

Any further ideas?




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