network communication protocol for providing shared access to resources
Server Message Block - Wikipedia
Server Message Block (SMB) is a communication protocol used to share files, printers, serial ports, and miscellaneous communications between nodes on a network. On Windows, the SMB implementation consists of two vaguely โ€ฆ Wikipedia
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Wikipedia
en.wikipedia.org โ€บ wiki โ€บ Server_Message_Block
Server Message Block - Wikipedia
1 week ago - Server Message Block (SMB) is a communication protocol used to share files, printers, serial ports, and miscellaneous communications between nodes on a network. On Windows, the SMB implementation consists of two vaguely named Windows services: "Server" (ID: LanmanServer) and "Workstation" (ID: ...
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Microsoft Learn
learn.microsoft.com โ€บ en-us โ€บ windows โ€บ win32 โ€บ fileio โ€บ microsoft-smb-protocol-and-cifs-protocol-overview
Microsoft SMB Protocol and CIFS Protocol Overview - Win32 apps | Microsoft Learn
The Server Message Block (SMB) Protocol is a network file sharing protocol, and as implemented in Microsoft Windows is known as Microsoft SMB Protocol. The set of message packets that defines a particular version of the protocol is called a dialect.
Discussions

What the heck is SMB (server message block)?
SMB is just a file-based sharing protocol, originally for Windows but now the default (kind of like FAT in that regard). In terms of OSI it would probably be considered Layer 7, although everything above 4 gets kind of blurry. More on reddit.com
๐ŸŒ r/homelab
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February 13, 2021
Understanding and Exploiting SMB protocol - COMPTIA Pentest+ TryHackMe Network Services.
ูŠุนุทูŠูƒ ุงู„ุนุงููŠู‡ ุงุฎูˆูŠ More on reddit.com
๐ŸŒ r/CompTIA
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December 10, 2020
Smb protocol usage

We have smbv1 disables I our env. And rotation works fine. Think for a second. Smbv1 is deprecated. Super insecure.

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๐ŸŒ r/CyberARk
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June 9, 2020
SMBv1.0 is it a bad thing?
Yes, SMB1 is bad and you should disable it https://techcommunity.microsoft.com/t5/Storage-at-Microsoft/Stop-using-SMB1/ba-p/425858 More on reddit.com
๐ŸŒ r/sysadmin
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April 25, 2019
People also ask

What is SMB?
SMB is a network file and resource sharing protocol that uses a client-server model. SMB clients such as PCs on a network connect to SMB servers to access resources such as files and directories or perform tasks like printing over the network.
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visualitynq.com
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What Is SMB? Enterprise Guide to Licensing & Security | Visuality ...
What is an SMB client?
An SMB client is any workstation, application container, or edge device that connects to an SMB server to access shared network resources. In enterprise networks, the client initiates sessions, negotiates dialect capabilities, handles authentication, and mounts remote shares to natively interact with centralized files and services.
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visualitynq.com
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What Is SMB? Enterprise Guide to Licensing & Security | Visuality ...
What is the difference between SMB and CIFS?
Often, the term CIFS, short for Common Internet File System, is used interchangeably with Server Message Block. That is because CIFS was a popular Microsoft SMB implementation introduced with Windows 95. Since then, the informal use of CIFS to refer to SMB has remained common. CIFS is considered a legacy implementation, whereas modern SMB is highly secure.
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visualitynq.com
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What Is SMB? Enterprise Guide to Licensing & Security | Visuality ...
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Medium
medium.com โ€บ @sarthakmali0710 โ€บ smb-server-message-block-protocol-complete-analysis-and-enumeration-guide-7c961c8ddbf2
SMB (Server Message Block) Protocol โ€” Complete Analysis and Enumeration Guide | by Sarthak Mali | Medium
June 15, 2025 - SMB (Server Message Block) is a crucial network communication protocol that provides shared access to files, printers, and serial ports between endpoints on a network.
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IBM
ibm.com โ€บ docs โ€บ ssw_aix_72 โ€บ network โ€บ smb_protocol.html
SMB protocol
The Server Message Block (SMB) protocol is a client-server communication protocol that is used for shared access to files, directories, printers, serial ports, and other resources on a network. It also provides an authenticated inter-process communication (IPC) mechanism.
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Komprise
komprise.com โ€บ glossary_terms โ€บ smb-format-server-message-block
SMB Protocol (Server Message Block) | Secure File Sharing
June 6, 2026 - Server Message Block (SMB) protocol enables shared NAS file access. SMB latency slows cloud migrations. Komprise eliminates the bottleneck with up to 27x faster transfers.
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Microsoft Learn
learn.microsoft.com โ€บ en-us โ€บ windows-server โ€บ storage โ€บ file-server โ€บ file-server-smb-overview
What is SMB File Sharing for Windows and Windows Server? | Microsoft Learn
The SMB protocol is a network file sharing protocol. SMB allows you to read and write to files over the network on top of TCP/IP or other protocols. With SMB, an application (or the user of an application) can access files or other resources ...
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UpGuard
upguard.com โ€บ blog โ€บ smb-port
What is an SMB Port? A Detailed Description of Ports 445 + 139 | UpGuard
July 7, 2025 - The Server Message Block Protocol (SMB Protocol) is a client-server communication protocol used for sharing access to files, printers, serial ports, and data on a network.
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TechTarget
techtarget.com โ€บ searchnetworking โ€บ definition โ€บ Server-Message-Block-Protocol
What is the Server Message Block (SMB) protocol? How does it work? | Definition from TechTarget
The SMB protocol is mainly used to facilitate shared access to the resources on a network. These may be printers, serial ports, files, directories, etc. SMB also provides client applications with a secure and controlled method for opening, reading, ...
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2BrightSparks
2brightsparks.com โ€บ resources โ€บ articles โ€บ what-is-smb-protocol.html
What Is SMB Protocol? Everything You Need to Know
April 24, 2025 - The Server Message Block (SMB) protocol is a network file-sharing protocol that allows applications and users to read, write, and request services from various devices on a network.
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Visuality Systems
visualitynq.com โ€บ home โ€บ resources โ€บ server message block (smb) protocol: technical guide to dialects and ports
SMB Protocol Guide: Dialects, Ports, Security | Visuality Systems
January 2, 2019 - Server Message Block (SMB) is an application-layer network protocol operating at Layer 7 of the OSI model, utilized to facilitate shared, concurrent access to files, printers, serial ports, and inter-process communication (IPC) interfaces across ...
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CISecurity
cisecurity.org โ€บ insights โ€บ blog posts โ€บ commonly exploited protocols: server message block (smb)
Blog | Commonly Exploited Protocols: Server Message Block (SMB)
June 10, 2021 - The Server Message Block (SMB) protocol โ€“ a proprietary Microsoft Windows communication protocol mainly used for file and printer sharing โ€“ has made the transition from the workplace to the โ€œhome officeโ€ easier, by allowing users access ...
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SecurityScorecard
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The Essential Guide to SMB Port Configuration for Enhanced Network Security - SecurityScorecard
March 30, 2026 - The Server Message Block (SMB) protocol is a critical component of Windows networking, facilitating the sharing of files, printers, and serial ports among devices on the same network.
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iAvva AI
iavva.ai โ€บ ai-business-strategy โ€บ understanding-server-message-block-protocol-a-business-guide
Server Message Block Protocol: A Comprehensive Guide
November 23, 2025 - If you think your files are safe just because theyโ€™re on a server, think again. The Server Message Block (SMB) protocol is the unsung hero of file sharing, but it also has a dark side that can leave your data vulnerable if not managed properly.
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Tech Gee
technologygee.com โ€บ what-is-the-server-message-block-smb-protocol
What is the Server Message Block (SMB) Protocol? โ€“ Tech Gee
January 12, 2025 - The Server Message Block (SMB) protocol is a foundational network file sharing protocol used extensively in modern computing environments. It enables applications and users to read and write to files and request services from server programs ...
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Oracle
docs.oracle.com โ€บ cd โ€บ E19120-01 โ€บ open.solaris โ€บ 819-7761 โ€บ gfhaq โ€บ index.html
Using the SMB Protocol (System Administration Guide: Solaris Printing)
The SMB protocol is an application-level network protocol that is primarily used for sharing printers, access to files, serial ports, and miscellaneous communications between nodes on the network. Mainly used by Windows systems, SMB is an authenticated inter-process communication mechanism.
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Fortra
fortra.com โ€บ blog โ€บ what-server-message-block-protocol
What Is the Server Message Block Protocol?
December 16, 2024 - The SMB protocol is a client-side communications protocol that enables users and applications on a network to access and share resources like files, printers, and serial ports.The SMB operates on an application layer but depends on lower-level ...