A diagnostic tool for NetBIOS over TCP/IP. Its primary design is to help troubleshoot NetBIOS name resolution problems.

The common parameters are:

• nbtstat -c: displays the contents of the NetBIOS name cache, the table of NetBIOS names and their resolved IP addresses.
• nbtstat -n: displays the names that have been registered locally on the system.
• nbtstat -r: displays the count of all NetBIOS names resolved by broadcast and querying a WINS server.
• nbtstat -R: purges and reloads the remote cache name table.
• nbtstat -RR: sends name release packets to WINs and then starts Refresh.
• nbtstat -s: lists the current NetBIOS sessions and their status, including statistics.
• nbtstat -S: lists sessions table with the destination IP addresses.

As per this page.

Disabling the NetBIOS support from a (Windows) DHCP server can be accomplished by the following steps:

# Open Administrative Tools, click DHCP
# Expand the DHCP server name, expand scope, right-click scope options, then click Configure Options.
# Click the advanced tab, then ''Microsoft Windows 2000 Options'' in the Vendor Class list.
# Make sure ''Default User Class'' is selected in the User Class list.
# Select the checkbox for ''001 Microsoft Disable NetBIOS Option'' under Available Options.
# In the Data Entry area, type '0x2' in the Long box, then click OK.

Disabling the NetBIOS support on a client computer can be accomplished by the following steps

Manually via Network Adapter settings:

# Open Network Connection Properties.
# Select TCP/IP v4.
# Click Advanced, then select the WINS tab.
# Select ''Disable NetBIOS over TCP/IP''.
# Click OK and reboot the computer.

Via registry settings

It is worth noting that these settings are for each network adapter; scripts are available to configure these settings for all adapters in a computer. Evaluate the use of a script in your environment, and consider the implications if deployed in masse.

# Open registry editor.
# Edit the data for ''NetbiosOptions'' and set the parameter to 2 (it will be 0 by default).
# Perform the above steps for each adapter in the computer.
# Close the registry editor and reboot the computer.