The –S Switch

The –S Switch
You use the -S switch to display the NetBIOS sessions table, which lists all the NetBIOS sessions, incoming and outgoing, to and from the host where you issue the command. The –S switch displays
both workstation and server sessions but lists remote addresses by IP address only. 
     Figure 4.9 shows sample output of the nbtstat –S command. The NetBIOS name is displayed along with its hex ID. The state of each session is also shown. An entry in the In/Out column determines whether the connection has been initiated from the computer on which you are running nbtstat (outbound) or whether another computer has initiated the connection to this
computer (inbound). The numbers in the Input and Output columns indicate (in bytes) the amount of data transferred between this station and the station listed in that entry.

FIGURE 4 . 9 Sample output of the nbtstat –S command