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NetBIOS Filter Commands 65
Appendix O
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:
• 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 through VPN connections.
• Allow or disallow NetBIOS packets to initiate calls.
Display NetBIOS Filter Settings
Syntax:
sys filter netbios disp
This command gives a read-only list of the current NetBIOS filter modes.
Diagram O-1 NetBIOS Display Filter Settings Command Example
Syntax:
sys filter netbios disp
The filter types and their default settings are as follows.
=============== NetBIOS Filter Status ===============
LAN to WAN: Forward
WAN to LAN: Forward
IPSec Packets: Forward
Trigger Dial: Disabled