Basics

A client-server protocol that regulates access to files and entire directories and other network resources such as printers, routers, or interfaces released for the network

  • Ports 139/445

SMB Version

Supported

Features

CIFS

Windows NT 4.0

Communication via NetBIOS interface

SMB 1.0

Windows 2000

Direct connection via TCP

SMB 2.0

Windows Vista, Windows Server 2008

Performance upgrades, improved message signing, caching feature

SMB 2.1

Windows 7, Windows Server 2008 R2

Locking mechanisms

SMB 3.0

Windows 8, Windows Server 2012

Multichannel connections, end-to-end encryption, remote storage access

SMB 3.0.2

Windows 8.1, Windows Server 2012 R2

SMB 3.1.1

Windows 10, Windows Server 2016

Integrity checking, AES-128 encryption

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