(SMB) A client/server protocol
that provides file and printer sharing between computers. In addition SMB can share serial ports
and communications abstractions such as named pipes
and mail slots
. SMB is similar to remote procedure call
(RPC) specialised for file system access.
SMB was developed by Intel
, and IBM
in the early 1980s. It has also had input from Xerox
. It is the native method of file and print sharing for Microsoft operating systems
; where it is called Microsoft Networking
. Windows for Workgroups
, Windows 95
, and Windows NT
all include SMB clients and servers. SMB is also used by OS/2
, Lan Manager
and Banyan Vines
. There are SMB servers and clients for Unix
, for example Samba
SMB is a presentation layer
protocol structured as a large set of commands (Server Message Blocks). There are commands to support file sharing, printer sharing, user authentication
, resource browsing, and other miscellaneous functions. As clients and servers may implement different versions ("dialects") of the protocol they negotiate before starting a session.
packages SMB requests into a network control block
(NBC) structure that can be sent across the network to a remote device.
SMB originally ran on top of the lower level protocols NetBEUI
, but now typically runs over TCP/IP
Microsoft have developed an extended version of SMB for the Internet
, the Common Internet File System
(CIFS), which in most cases replaces SMB. CIFS
runs only runs over TCP/IP.
Just what is SMB? (http://samba.anu.edu.au/cifs/docs/what-is-smb.html).
IBM protocols (http://protocols.com/pbook/ibm.htm).
Microsoft SMB/CIFS documents (ftp://ftp.microsoft.com/developr/drg/CIFS/).