We realized that we are not able to connect to one of the the 2 Controllers with a Windows Client on a FAS2240-2 / NetApp Release 8.2.5P3 7-Mode . Checking the connection via port 445 showed that 445 on controller one is not open, even if the CIFS configuration was performed with success.
Is there a way to check open Ports and also a way to open them if needed ?