NTAP> Tue Oct 30 20:44:00 IST [NTAP:cifs.server.infoMsg:info]: CIFS: Warning for server: Connection terminated. Tue Oct 30 20:44:00 IST [NTAP:cifs.server.errorMsg:error]: CIFS: Error for server : Error while negotiating protocol with server STATUS_IO_TIMEOUT. Tue Oct 30 20:44:00 IST [NTAP:fpolicy.fscreen.server.connectError:error]: FPOLICY: A. Tue Oct 30 20:44:00 IST [NTAP:fpolicy.fscreen.server.droppedConn:warning]: FPOLICY: File policy server for fscreen policy Varonis has disconnected from the filer. Tue Oct 30 20:44:00 IST [NTAP:fpolicy.fscreen.server.connectedNone:warning]: FPOLICY: File policy Varonis (file screening) is enabled but no servers are connected to perform file screening for this policy.
I had this error recently and worked my way through the problem.
It boils down to the 7-mode filers were trying and establish a connection with the 2012 R2 server using SMBv1, this isn't enabled in 2012 R2 by default and I didn't want to enable it as we know SMBv1 is a security risk.
The soulution for me was on the 7-Mode filers I have to enable the following option.
options cifs.smb2.client.enable on
Once I enabled the fpolicy feature was able to communucate back to our auditing server straigt away.