Bug 426 - error: SMB signing is mandatory and we have disabled it
error: SMB signing is mandatory and we have disabled it
Product: Samba 3.0
Classification: Unclassified
Component: smbclient
All Linux
: P1 critical
: none
Assigned To: Gerald (Jerry) Carter
Depends on:
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Reported: 2003-09-09 08:14 UTC by Josh Van As
Modified: 2005-11-14 09:28 UTC (History)
0 users

See Also:


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Description Josh Van As 2003-09-09 08:14:36 UTC
I have a Windows 2003 Server (named volcano) which I am attempting to mount a 
share from.  My client is an x86 Red Hat Linux 9.0 box running Samba 3.0RC3 
after a fresh reboot.

I issue the following command which is a command that worked fine before.

smbmount //volcano/c$ /mnt/volcano/c -o credentials=/root/smb.pass 

(username and domain name omitted)

Instead of mounting the share, I receive the following error:

cli_negprot: SMB signing is mandatory and we have disabled it.
2639: protocol negotiation failed
SMB connection failed

I can't seem to find this error listed anywhere.  If SMB Signing is 
unsupported or something weird like that, could someone please point me in the 
direction of how to turn it off?

Comment 1 Gerald (Jerry) Carter 2003-09-09 11:09:46 UTC
smbfs does not support SMB signing.  Your only option is to use 
the newer cifsvfs file system.  See 


for details.

or you can disable smb signing on the 2003 server.
Comment 2 Gerald (Jerry) Carter 2005-02-07 09:05:46 UTC
originally reported against one of the 3.0.0rc[1-4] releases.
Cleaning up non-production versions.
Comment 3 Gerald (Jerry) Carter 2005-11-14 09:28:42 UTC
database cleanup