ZyXEL Communications ZyWALL 2 Series Appendix M, NetBIOS Filter Commands, M-1, Diagram, Introduction, Display NetBIOS Filter Settings, Diagram M-2NetBIOS Display Filter Settings Command Example

ZyWALL 2 Series User’s Guide

Appendix MNetBIOS 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 between the LAN and 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

Diagram M-1NetBIOS Display Filter Settings Command Example

Syntax: sys filter netbios disp

This command gives a read-only list of the current NetBIOS filter modes.

ras> sys filter netbios disp

=========== NetBIOS Filter Status ===========

Between LAN and WAN: Block

IPSec Packets: Forward

Trigger Dial: Disabled

Diagram M-2 NetBIOS Display Filter Settings Command Example

The filter types and their default settings are as follows.

NetBIOS Filter Commands M-1