ZyAIR Wireless Gateway Series User’s Guide

Appendix LNetBIOS 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 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 for a ZyAIR.

===============

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

LAN to

WAN:

Forward

WAN to

LAN:

Forward

IPSec Packets:

Forward

Trigger Dial:

Disabled

 

 

 

Diagram L-1 NetBIOS Display Filter Settings Command Without DMZ Example

The filter types and their default settings are as follows.

Chart L-1 NetBIOS Filter Default Settings

NAME

DESCRIPTION

EXAMPLE

 

 

 

LAN to WAN

This field displays whether NetBIOS packets are blocked or forwarded

Forward

 

from the LAN to the WAN.

 

 

 

 

NetBIOS Filter Commands

L-1