[Samba] Solve of problem "network disks - lost connection under w2k and wxp"
Christopher R. Hertel
crh at ubiqx.mn.org
Tue Sep 17 22:22:34 GMT 2002
On Tue, Sep 17, 2002 at 09:15:43PM +0000, jra at dp.samba.org wrote:
> Ah. Now I think I get it ......
> The new Microsoft redirectors use the "feature" of Microsoft SMB
> implementations that SessionSetup SMB with the VC number set to 0
> should terminate all previous sessions from the same client,
> they don't bother to send a Logoff command any more.
The assumption being that the client would not send a second SessionSetup
with VC=0 unless it had crashed and was starting up again.
> We can change Samba to send all connected SMB's a "disconnect"
> message when we get a new VC=0 SessionSetup to fix this I think.
> I will investigate further.
Andrew Bartlett, I think it was, found a KB article a while ago stating
that Microsoft were disabling the disconnect-on-new-VC=0 behavior via a
hotfix or in the latest service pack. It turned out that Windows clients
behind a NAT were causing each other's sessions to terminate. The first
client would connect (VC=0, IP=NAT_Addr) and would be fine until the next
client connected (VC=0, IP=NAT_Addr again). The second connection would
cause the server (on the other side of the NAT) to believe that the
existing connections (from the first client) were no longer valid.
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