A bit late to this post, but for future reference maybe worth it as smb 1 after the wannacry drama will probably be less and less common out there :-)

I have just used Filesys::SmbClient with smb2 or 3. You just need to fill in the file ~/.smb/smb.conf that Filesys::Smbclient autocreates with something like this: 

[global]
client max protocol = SMB3

[download]
If the share only accepts smb2, it will downgrade to 2 or 2.1, otherwise it will use 3.

I verified this using wireshark traces.

In reply to Re: Unable to establish SMB2 connection using Filesys::SmbClient by natxo
in thread Unable to establish SMB2 connection using Filesys::SmbClient by Netras

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