Got a Fedora 25 Server using fairly default smb.conf, nothing special,
just to share some storage.
Three clients: macOS 10.12.4, Fedora 26, and Windows 10
On the server, using 'smbstatus' I see the following protocols used
for each client when connected:
Windows 10: SMB3_11
Fedora 26: NT1
This is true whether I use smbclient or Nautilus to make the connection.
The smb.conf man page says for "client min protocol" and "client max protocol":
Normally this option should not be set as the automatic
negotiation phase in the SMB protocol takes care of choosing th