When was SMB2 introduced?

Microsoft introduced a new version of the protocol (SMB 2.0 or SMB2) in 2006 with Windows Vista and Windows Server 2008. Although the protocol is proprietary, its specification has been published to allow other systems to interoperate with Microsoft operating systems that use the new protocol.

When did SMB v3 come out?

The first release of SMB3 (a.k.a. SMB v3. 0) came with Windows 8 and Server 2012. SMB v3. 02 was introduced in Windows 8.1 and Server 2012 R2.

Does Windows Server 2016 support SMB2?

In SMB network communication, the client and server use the maximum SMB protocol version supported by both the client and the server. For example, if a client computer running Windows 8.1 connects to a file server with Windows Server 2016, the SMB 3.0. 2 protocol will be used.

When did SMB v1 release?

SMBv1 was released in 1984 by IBM for file sharing in DOS. Microsoft modified and updated it in 1990. CIFS was released in 1996 with more features and support for larger file sizes.

What is the difference between SMB1 and SMB2?

SMB2 a.k.a. SMBv2 or SMB 2.0 was released by Microsoft in 2006 with Windows Vista. This Microsoft SMB2 protocol implementation improved performance and security when compared to SMB1. For example, SMB2 increased packet sizes to 32-bit — and even 128-bit for file handles — a significant improvement over SMB1's 16-bits.

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Is SMB2 still supported?

[MS-SMB2]: Server Message Block (SMB) Protocol Versions 2 and 3 | Microsoft Learn. This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Is SMBv1 obsolete?

It was superseded by SMBv2 and later protocols starting in 2007. Microsoft publicly deprecated the SMBv1 protocol in 2014.

Is SMB v2 vulnerable?

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 2.0 (SMBv2) server handles certain requests, aka 'Windows SMB Remote Code Execution Vulnerability'.

Does Windows 2003 support SMB2?

Windows 2003 was the last Windows operating system that was only using SMB v1, and it is now no longer supported by Microsoft. All the versions of Windows that have come after Windows 2003 are able to support SMB v2 or SMB v3, but normally, these systems are not the issue.

What version of SMB is recommended?

We recommend keeping SMBv2 and SMBv3 enabled, but you might find it useful to disable one temporarily for troubleshooting. For more information, see How to detect status, enable, and disable SMB protocols on the SMB Server.

What version of SMB does 2016 use?

In each version of Windows, Microsoft provides an updated version of the Server Message Block (SMB) protocol. Windows Server 2016 and Windows 10 communicate via the new SMB 3.1. 1, offering some new features in terms of performance and security.

Is SMB2 protocol secure?

It was first released with Windows 95. SMB Version 2: Microsoft released SMB v2 in 2006 with Windows Vista as a more secure and efficient alternative to the older versions. This protocol introduced features such as improved authentication, larger packet size, fewer commands, and better efficiency.

What is the default SMB2 port?

TCP: SMB2 uses TCP as its transport protocol. The well known TCP port for SMB2 is 445.

Which is faster SMB2 or SMB3?

SMB2 was faster than SMB3. SMB2 gave me about 128-145 MB/sec. SMB3 gave me about 110-125 MB/sec.

Why was SMB 1 disabled?

Microsoft has advised customers to stop using SMBv1 because it is extremely vulnerable and full of known exploits. WannaCry, a well-known ransomware attack, exploited vulnerabilities in the SMBv1 protocol to infect other systems. Because of the security risks, support for SMBv1 has been disabled.

What port did SMB originally use?

SMB was originally designed by Barry Feigenbaum at IBM in 1983 with the aim of turning DOS INT 21h local file access into a networked file system and was originally designed to run on top of NetBIOS over TCP/IP (NBT) using IP port 139 and UDP ports 137 and 138.

Does Windows Server 2012 support SMB2?

Based on my knowledge, smb2. 0 is also supported on server 2012.

Does Windows XP have SMB2?

Windows XP (or earlier versions) only supports SMB1, and some Windows computers may be specifically configured to only use SMB1 and NTLMv1. We highly recommend upgrading to Windows 10 or later and enabling SMB2 or SMB3 where possible to ensure data confidentiality.

Does Windows 7 support SMB2?

It is the default mode of communication between Windows Vista and Windows Server 2008. Microsoft modified SMB2 again (to SMB2. 1) for Windows 7 and Windows Server 2008 R2.

Do people still use SMB?

The SMB protocol is one of the most popular protocols for file and resource sharing over networks. And not only with Windows—it has also been widely adopted by other operating systems, such as Linux/Unix and macOS.

How do I enable SMB v2?

To enable SMBv2, you want to confirm your operating system can run it. Most Windows 10 operating systems can. Open the Powershell and type in Get-SmbServerConfiguration | Select EnableSMB2Protocol. You should receive a True in response, meaning you can run SMB2 on your computer.

What is the connection limit for SMB2?

For SMB 2 & 3, do not exceed 3,000 active sessions and 27,000 idle connections per node. For SMB1, the recommended limit is 1000 connections per node. SMB read and write performance improvements can often be achieved by setting the data-access pattern to Streaming.

Is SMB1 faster than SMB2?

All replies. Furthermore, generally SMBv1 traffic is slower than SMBv2 traffic because SMBv2 uses pipelining technology to do multiple tasks at the same time.

What is more secure than SMB?

However, with encryption, NFS is slightly better than SMB. In the case of a random read, the performance of NFS and SMB are almost the same when using plain text. However, with encryption, NFS is better than SMB. And for random write, NFS is slightly better than SMB when using plain text and encryption.

What is SMB2 protocol?

The Server Message Block (SMB) Protocol Versions 2 and 3, hereafter referred to as "SMB 2 Protocol", is an extension of the original Server Message Block (SMB) Protocol (as specified in [MS-SMB] and [MS-CIFS]). Both protocols are used by clients to request file and print services from a server system over the network.