Problem
You will notice messages like this in logfiles or system diagnostic:
WARNING: The "auth methods" option is deprecated
Environment
This option is commonly used to allow printers or scanners to access a file share. Additionally clients not being part of the domain need this to be able to access shares.
The problem with this is that this possibility of non-domain access unfortunately represents a security hole which has been closed by Microsoft in the meantime. In terms of compatibility, Samba follows Microsoft’s guidelines and adapts them accordingly. It is a security update because the client or user arrives with a valid Kerberosticket, but the system is not part of the domain and is therefore not (fully) trusted.
Solution
With future releases of UCS the parameter will go away.
Re-design network concept and ideally adjust your structure so that access is no longer required (e.g. domain join of the clients). In the long run there is no other option.