ZyXEL Communications NBG410W3G Series User Manual

 Chapter 6 WAN Screens

NBG410W3G Series User’s Guide

Every computer on the Internet must have a unique IP address. If your networks are isolated 
from the Internet, for instance, only between your two branch offices, you can assign any IP 
addresses to the hosts without problems. However, the Internet Assigned Numbers Authority 
(IANA) has reserved the following three blocks of IP addresses specifically for private 
networks.

Check Traffic 

Redirection 

Connectivity

Select the check box to have the ZyXEL Device periodically test the traffic redirect 

connection. 
Select Ping Default Gateway to have the ZyXEL Device ping the backup 

gateway's IP address.
Select Ping this Address and enter a domain name or IP address of a reliable 

nearby computer (for example, your ISP's DNS server address) to have the ZyXEL 

Device ping that address. For a domain name, use up to 63 alphanumeric 

characters (hyphens, periods and the underscore are also allowed) without 

spaces.

Windows 

Networking 

(NetBIOS over 

TCP/IP)

NetBIOS (Network Basic Input/Output System) are TCP or UDP 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.

Allow between 

WAN1 and LAN

Select this check box to forward NetBIOS packets from WAN 1 to the LAN port and 

from the LAN port to WAN1. If your firewall is enabled with the default policy set to 

block WAN 1 to LAN traffic, you also need to enable the default WAN1 to LAN 

firewall rule that forwards NetBIOS traffic.
Clear this check box to block all NetBIOS packets going from WAN 1 to the LAN 

port and from LAN port to WAN1.

Allow between 

WAN1 and DMZ

Select this check box to forward NetBIOS packets from WAN 1 to the DMZ port and 

from the DMZ port to WAN1. 
Clear this check box to block all NetBIOS packets going from WAN 1 to the DMZ 

port and from DMZ port to WAN1.

Allow between 

WAN2 and LAN

Select this check box to forward NetBIOS packets from WAN 2 to the LAN port and 

from the LAN port to WAN2. If your firewall is enabled with the default policy set to 

block WAN 2 to LAN traffic, you also need to enable the default WAN2 to LAN 

firewall rule that forwards NetBIOS traffic.
Clear this check box to block all NetBIOS packets going from WAN 2 to the LAN 

port and from LAN port to WAN2.

Allow between 

WAN2 and DMZ

Select this check box to forward NetBIOS packets from WAN 2 to the DMZ port and 

from the DMZ port to WAN2. 
Clear this check box to block all NetBIOS packets going from WAN 2 to the DMZ 

port and from DMZ port to WAN2.

Allow Trigger Dial Select this option to allow NetBIOS packets to initiate calls.

Apply

Click Apply to save your changes.

Reset

Click Reset to begin configuring this screen afresh.

Table 16   NETWORK > WAN General (continued)

Table 17   Private IP Address Ranges

10.0.0.0

-

10.255.255.255

172.16.0.0

-

172.31.255.255

192.168.0.0

-

192.168.255.255