Cannot disable SMB 2.x

[sirzooro]

I want to disable SMB 2.x and found that this is not possible. There is Negotiator.SpecifiedDialect field, but it allows to set one version only. Additionally SMB version constants are in file in internal subdirectory, so they are considered private implementation details and are inaccessible from outside (at least my build system is configured in this way).

Please add new field to allow specifying minimum protocol version and make version constants public.

Note: alternative solution with array of versions is not forward-compatible, i.e. I would have to change my code when you add support for some future SMB version.