ZyWALL 2 User’s Guide

Chart M-1 NetBIOS Filter Default Settings

NAME

DESCRIPTION

EXAMPLE

 

 

 

Between LAN

This field displays whether NetBIOS packets are blocked or forwarded

Forward

and WAN

between the LAN and the WAN.

 

 

 

 

IPSec Packets

This field displays whether NetBIOS packets sent through a VPN

Forward

 

connection are blocked or forwarded.

 

 

 

 

Trigger dial

This field displays whether NetBIOS packets are allowed to initiate

Disabled

 

calls. Disabled means that NetBIOS packets are blocked from initiating

 

 

calls.

 

 

 

 

NetBIOS Filter Configuration

Syntax:

sys filter netbios config <type> <onoff>

where

 

<type> =

Identify which NetBIOS filter (numbered 0-3) to configure.

 

0 = Between LAN and WAN

 

3 = IPSec packet pass through

 

4 = Trigger Dial

<onoff> =

For types 0, use on to enable the filter and block NetBIOS packets. Use off to

 

disable the filter and forward NetBIOS packets.

 

For type 3, use on to block NetBIOS packets from being sent through a VPN

 

connection. Use off to allow NetBIOS packets to be sent through a VPN connection.

 

For type 4, use on to allow NetBIOS packets to initiate dial backup calls. Use off to

 

block NetBIOS packets from initiating dial backup calls.

Example commands

Command: sys filter netbios config 0 on

This command blocks LAN to WAN and WAN to LAN NetBIOS packets

Command: sys filter netbios config 3 on

This command blocks IPSec NetBIOS packets

M-2

NetBIOS Filter Commands