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ZyWALL 10~100 Series Internet Security Gateway
NetBIOS Filter Commands 11-1
Chapter 11
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 do the following (filters for DMZ are not available on all models):
• Allow or disallow the sending of NetBIOS packets from the LAN to the WAN.
• Allow or disallow the sending of NetBIOS packets from the WAN to the LAN.
• Allow or disallow the sending of NetBIOS packets from the LAN to the DMZ.
• Allow or disallow the sending of NetBIOS packets from the WAN to the DMZ.
• Allow or disallow the sending of NetBIOS packets from the DMZ to the LAN.
• Allow or disallow the sending of NetBIOS packets from the DMZ to the WAN.
• Allow or disallow the sending of NetBIOS packets through VPN connections.
• Allow or disallow NetBIOS packets to initiate calls.
Display NetBIOS Filter Settings
Syntax:
sys filter netbios disp