ZyXEL ZYWALL USG 100 User Guide - Page 104

Con the Policy Route, 5.4 How to Con DNS Inbound Load Balancing - set dns

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Chapter 5 Managing Traffic 5.3.2 Configure the Policy Route Now you need to configure a policy route that has the ZyWALL use the range of public IP addresses as the source address for WAN to LAN traffic. Click Configuration > Network > Routing > Policy Route > Add (in IPv4 Configuration). It is recommended to add a description. This example uses LAN-to-WAN-Range. Specifying a Source Address is also recommended. This example uses LAN1_SUBNET. Set the Source Network Address Translation to Public-IPs and click OK. 5.4 How to Configure DNS Inbound Load Balancing This example shows you how to configure the ZyWALL to respond to DNS query messageswith the least loaded interface's IP address. The DNS query senders will then transmit packets to that interface instead of an interface that has a heavy load. This example assumes that your company's domain name is www.example.com. You want your ZyWALL's WAN1 (202.1.2.3) and WAN2 (202.5.6.7) to use DNS inbound load balancing to balance traffic loading coming from the Internet. 1 In the CONFIGURATION > Network > Inbound LB screen, select Enable DNS Load Balancing. Click Apply. 104 ZyWALL USG100-PLUS User's Guide

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Chapter 5 Managing Traffic
ZyWALL USG100-PLUS User’s Guide
104
5.3.2
Configure the Policy Route
Now you need to configure a policy route that has the ZyWALL use the range of public IP addresses
as the source address for WAN to LAN traffic.
Click
Configuration > Network > Routing > Policy Route > Add
(in
IPv4 Configuration
).
It is recommended to add a description. This example uses
LAN-to-WAN-Range
.
Specifying a
Source Address
is also recommended. This example uses
LAN1_SUBNET
.
Set the
Source Network Address Translation
to
Public-IPs
and click
OK
.
5.4
How to Configure DNS Inbound Load Balancing
This example shows you how to configure the ZyWALL to respond to DNS query messages
with the
least loaded interface’s IP address. The DNS query senders will then transmit packets to that
interface instead of an interface that has a heavy load.
This example assumes that your company’s domain name is www.example.com. You want your
ZyWALL’s WAN1 (202.1.2.3) and WAN2 (202.5.6.7) to use DNS inbound load balancing to balance
traffic loading coming from the Internet.
1
In the
CONFIGURATION
>
Network
>
Inbound LB
screen, select
Enable DNS Load
Balancing
. Click
Apply
.