SMB/CIFS is a protocol made by Microsoft for sharing files across the network. Samba is a set of tools/libraries created to provide support for SMB/CIFS in Linux and Mac.
| SMB Version | Released in | Samba | Linux |
| SMB1 | DOS | Samba 1.x | |
| SMB2.0 | Vista 2008 | Samba 3.6 | |
| SMB2.1 | Win7 2008R2 | Samba 4.0.0 | Linux 3.7 |
| SMB3 (SMB2.2) | Win8 2012 | Samba 4.1 | |
| SMB3.0.2 (SMB3.02) | Win8.1 2012R2 | Linux 3.12 (backported) | |
| SMB3.1.1 | Win10 2016 | Samba 4.3 | Linux 4.2 |
Hopefully nobody is still using SMB1 still, it is insecure and obsolete. Indeed from Samba 4.11 and Linux 6 onwards, disable it by default.