i find SMB
Server Message Block
In computer networking, Server Message Block (SMB, also known as Common Internet File System, CIFS) operates as an application-layer network protocol[1] mainly used to provide shared access to files, printers, serial ports, and miscellaneous communications between nodes on a network. It also provides an authenticated inter-process communication mechanism. Most usage of SMB involves computers running Microsoft Windows, where it is often known as "Microsoft Windows Network".
When discussing SMB, one should distinguish:
the SMB protocol specification
the "server" and "workstation" services that implement the protocol on Windows
the Samba service that implements the protocol on Unix systems
NetBIOS transport used by SMB on legacy versions of Windows
the DCE/RPC services that use SMB as an authenticated inter-process communication channel (over named pipes)
the "Network Neighborhood" protocols which primarily (but not exclusively) run as datagram services directly on the NetBIOS transport