In Windows XP, you can secure your files from the Internet and disable Netbios over IP in the TCP/IP protocol settings (Advanced options). Windows uses the NetBIOS protocol to share files and print services over your home LAN. By default, NetBIOS is routed over TCP/IP and as such creates a security vulnerability on your PC. Check your TCP/IP protocol bindings and disable file and printer sharing. In the advanced TCP/IP settings, under the WINS tab, disable NetBIOS over TCP/IP.
Install IPX/SPX. IPX/SPX is not installed by default. If you need to share files and printers, then install Novell’s IPX/SPX powerfull protocols. In the Network Connection’s Properties, choose Install and Protocol: NWLink IPX/SPX/NetBIOS.
Make sure the network bindings are adjusted. This you can modify with the Network Connections Advanced Menu Option ‘Advanced Settings’ in the ‘Adapters and Bindings‘ tags. Under the Start menu, select ‘Network Connections’. In the Network Connections window, select ‘Advanced’ from the top menu. In the pull-down menu, go to ‘Advanced Settings’. The Advanced Settings show the ‘Adapters and Bindings’ with the enabled bindings for each Connection. Make sure only NWLink IPX/SPX/NetBIOS is enabled (see Dutch example below):
Read also the Step-by-step procedure for Network Bondage on the Shields Up! pages.
Tuning the Windows environment – Netbios Security