Disabling NetBIOS over TCP

About NetBIOS over TCP

NetBIOS over TCP is the standard protocol used for CIFS prior to Windows 2000. The option to use this protocol is enabled on your storage system by default. It corresponds to the "Enable NetBIOS over TCP" setting in the Windows 2000 Advanced TCP/IP settings tab. If NetBIOS over TCP has been disabled in your Windows 2000 network, you can use this option to disable NetBIOS over TCP on your storage system.

Requirements for disabling NetBIOS over TCP

In order to disable NetBIOS over TCP, all storage system clients must be running Windows 2000 or later. Once you disable NetBIOS over TCP, only Windows 2000 domain controllers and virus scanners can be used.

Disabling NetBIOS over TCP

To disable NetBIOS over TCP, complete the following steps.

Note
Once you disable NetBIOS over TCP, clients no longer receive Data ONTAP notification messages, such as shutdown messages and vscan warnings.

Step	Action
1	If...	Then...
	CIFS is running	Enter the following command: cifs terminate You are prompted with a message allowing you to alert users and specify a delay time before CIFS terminates.
	CIFS is not running	Go to Step 2.
2	Enter the following command: options cifs.netbios_over_tcp.enable off