smbstatus

From the administrative point of view, we can check these connections using smbstatus. Apart from the Samba version, we can also see who, from which host, and which share the client is connected. This is especially important once we have entered a subnet (perhaps even an isolated one) that the others can still access.

For example, with domain-level security, the samba server acts as a member of a Windows domain. Each domain has at least one domain controller, usually a Windows NT server providing password authentication. This domain controller provides the workgroup with a definitive password server. The domain controllers keep track of users and passwords in their own NTDS.dit and Security Authentication Module (SAM) and authenticate each user when they log in for the first time and wish to access another machine's share.