Since Windows 2000, SMB runs, by default, with a thin layer, similar to the Session Message packet of NBT’s Session Service, on top of TCP, using TCP port 445 rather than TCP port 139—a feature known as “direct host SMB”.

How do I know if SMB is enabled?

1. Detect: PowerShell Copy. Get-SmbServerConfiguration | Select EnableSMB1Protocol.
2. Disable: PowerShell Copy. Set-SmbServerConfiguration -EnableSMB1Protocol $false.
3. Enable: PowerShell Copy. Set-SmbServerConfiguration -EnableSMB1Protocol $true.

Which is better SMB or NFS?

NFS offers better performance and is unbeatable if the files are medium-sized or small. For larger files, the timings of both methods are almost the same. In the case of sequential read, the performance of NFS and SMB are almost the same when using plain text. However, with encryption, NFS is better than SMB.