Windows 2012 R2 (smb 2.0) client failures to their shares

Hi SueF,

You can check/change the setting with the following information:

To view the clusters configuration:

# isi smb settings global view

Open an SSH connection on any node in the cluster and log on using the "root" account.

Run the following commands:

#isi smb settings global modify --enable-security-signatures=yes

#isi smb settings global modify --require-security-signatures=yes

Microsoft has a kb about errors regarding Windows Server 2012 that may be related.

"System error 2148073478," "extended error," or "Invalid Signature" error message on SMB connections in Windows Server 2012 or Windows 8

http://support.microsoft.com/kb/2686098

After a Windows Server 2012-based or Windows 8-based computer fails to connect to a third-party file server that supports the SMBv2 file protocol, you receive one of the following error messages or a similar error message, depending on how you access the third-party file server:

○ When you use a DIR command that has a UNC path:

Invalid Signature

○ When you run a NET USE command:

System error 2148073478 has occurred

○ When you try to browse to the UNC path:

An extended error has occurred
Pasted from <http://support.microsoft.com/kb/2686098>

I also came across an ETA you may need to take note of regarding security with SMB signing. If you are on 7.2.1.3 or later, the issue is resolved.
484146 : ESA-2016-061: EMC Isilon OneFS SMB Signing Vulnerability https://support.emc.com/kb/484146