ZyXEL Communications Corporation NBG334SH 用户手册

Appendix H NetBIOS Filter Commands

ZyXEL NBG-334SH User’s Guide

The filter types and their default settings are as follows.

Syntax:sys filter netbios config <type> <on|off>

where

Table 107   NetBIOS Filter Default Settings

Between LAN 
and WAN

This field displays whether NetBIOS packets are blocked or forwarded 
between the LAN and the WAN.

Block

Between LAN 
and DMZ

This field displays whether NetBIOS packets are blocked or forwarded 
between the LAN and the DMZ.

Block

Between WAN 
and DMZ

This field displays whether NetBIOS packets are blocked or forwarded 
between the WAN and the DMZ.

Block

IPSec Packets

This field displays whether NetBIOS packets sent through a VPN 
connection are blocked or forwarded. 

Forward

Trigger dial

This field displays whether NetBIOS packets are allowed to initiate 
calls. Disabled means that NetBIOS packets are blocked from 
initiating calls.

Disabled

<type>  =

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

0 = Between LAN and WAN

1 = Between LAN and DMZ

2 = Between WAN and DMZ

3 = IPSec packet pass through

4 = Trigger Dial

<on|off>  =

For type 0 and 1, 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

sys filter netbios 

config 0 on

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

sys filter netbios 

config 1 off

This command forwards LAN to DMZ and DMZ to LAN NetBIOS 
packets.

sys filter netbios 

config 3 on

This command blocks IPSec NetBIOS packets.

sys filter netbios 

config 4 off

This command stops NetBIOS commands from initiating calls.