Server Message Block (SMB) is a network file-sharing protocol that allows computers to share files, printers, and other resources over a network. Primarily used in Windows environments, SMB enables applications and users to access remote files as if they were local. It operates over TCP port 445 and supports features like authentication, encryption, and session management. While commonly associated with Windows, SMB is also supported on Linux and macOS through implementations like Samba. Learn more: https://en.wikipedia.org/wiki/SMB