[Samba] samba 3 protocol smb negotiation failed with samba4.12

[Jeremy Allison]

On Thu, Oct 15, 2020 at 12:52:25PM -0500, Dania Ramirez Moya via samba wrote:
> Hello list:
> I want to  connect client samba 3.6 to server samba 4.12 but  i have this
> problem:
> smbclient -L  10.0.0.2 -U administrator
> *protocol negotiation failed : NT_STATUS_INVALID_NETWORK_RESPONSE*
> 
> I know this is about smb version protocol. I have tried some settings but
> they didn't work.

Samba 4.12 doesn't allow SMB1 out of the box. Look into setting
"server min protocol" in the 4.x server smb.conf.