Microsoft network client: Digitally sign communications (if server agrees) This security setting determines whether the SMB client attempts to negotiate SMB packet signing. The server message block (SMB) protocol provides the basis for Microsoft file and print sharing and many other networking operations, such as remote Windows administration. To prevent man-in-the-middle attacks that modify SMB packets in transit, the SMB protocol supports the digital signing of SMB packets. This policy setting determines whether the SMB client component attempts to negotiate SMB packet signing when it connects to an SMB server.
