LKBEN10817: What is SMB?


You need some information about SMB.


You want to know what SMB (Server Message Block) is.


Server message protocol is an application layer network protocol used to provide shared access to files, printers, serial ports, etc. It is used by Microsoft (Microsoft LAN Manager), IBM (LAN Server) and Samba & Samba-TNG.

SMB was modified 1996 by Microsoft and called CIFS (Common Internet File System). CIFS was build on NetBIOS over TCP/IP (also called NBT) and not only features file and printer shared access but also Windows-RPC and Windows NT-Domain service.

SMB 2.0 was introduced in 2006 by Microsoft in Windows Vista.
SMB 2.0 was streamlined (the number of commands was reduced to 19 from over 100) and introduces pipelining (sending additional requests before the response arrives), adds support for multiple actions in a single request and supports larger buffer sizes.


The information provided in this document is intended for your information only. Lubby makes no claims to the validity of this information. Use of this information is at own risk!

About the Author

Author: Wim Peeters - Keskon GmbH & Co. KG

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.

Latest update: 05/10/2020 | Comment: