[Samba] SAMBA and SMB Signing

Volker Lendecke Volker.Lendecke at SerNet.DE
Thu Aug 5 23:56:23 MDT 2010

On Thu, Aug 05, 2010 at 05:42:49PM -0600, Kartchner, Val Civ USAF AFMC 519 SMXS/MXDEA wrote:
> We're working on setting up a SAMBA server, but it is not working.
> There is a standard configuration for our Windows Vista machines.  With
> the previous configuration of Windows Vista ("Alice") it connects to the
> SAMBA fine.  However, the latest Windows Vista configuration ("Bob")
> will contact the SAMBA server, send the required password then just stop
> communicating.
> We have been sniffing the packets between various configurations and
> found two differences in the last message from client to server:
> "Canonicalized path names" and "Security Signature" bits are both set on
> Bob but unset on Alice.  We have confirmed that the "Security Signature"
> bit is the problem by using the instructions on page 5 of
> "http://www.expand.com/industries/case-studies/2008/bosc/white%20papers/
> WP_SMBsigning.pdf" to turn off SMB signing.  Bob will then work with the
> SAMBA server.  However, turning this off on an actual Windows Vista
> system is NOT an allowed option for us.  I have found requests on some
> mailing lists asking how to enable SMB signing in SAMBA, but no replies
> telling how to do it.  I have also searched for SAMBA configuration
> options but have not found any way to enable it.
> How is SMB signing enabled in SAMBA?

smb signing = mandatory


More information about the samba mailing list