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ZyWALL 10/50 Internet Security Gateway
NetBIOS Filter Commands W
Appendix I
NetBIOS Filter Commands
The following describes the NetBIOS packet filter commands. See the Command Interpreter appendix for
information on the command structure.
Introduction
NetBIOS (Network Basic Input/Output System) are TCP or UDP broadcast packets that enable a computer to
connect to and communicate with a LAN.
For some dial-up services such as PPPoE or PPTP, NetBIOS packets cause unwanted calls.
You can configure NetBIOS filters to:
• Block NetBIOS packets from being sent from the LAN to the WAN.
• Block NetBIOS packets from being sent from the LAN to the DMZ.
• Allow NetBIOS packets to be sent through VPN connections.
• Block NetBIOS packets from initiating calls.
Display NetBIOS Filter Settings
Syntax:
sys filter netbios disp
This command gives a read-only list of the current NetBIOS filter modes.
Diagram 9 NetBIOS Display Filter Settings Command
=============== NetBIOS Filter Status ===============
LAN to WAN: Forward
LAN to DMZ: Forward
IPSec Packets: Forward
Trigger Dial: Disabled