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366
SonicOS 5.8.1 Administrator Guide
Using NAT Load Balancing
This section contains the following subsections:
• “NAT Load Balancing Topology” on page 366
• “Prerequisites” on page 366
• “Configuring NAT Load Balancing” on page 367
• “Troubleshooting NAT Load Balancing” on page 368
NAT Load Balancing Topology
The following figure shows the topology for the NAT load balancing network.
Prerequisites
The examples shown in the Tasklist section on the next few pages utilize IP addressing
information from a demo setup – please make sure and replace any IP addressing information
shown in the examples with the correct addressing information for your setup. Also note that
the interface names may be different.
Note It is strongly advised that you enable logging for all categories, and enable name resolution
for logging.
To enable logging and alerting, log into the SonicWALL’s Management GUI, go to Log >
Categories, choose Debug from the drop-down next to Logging Level, chose All Categories
from the drop-down next to View Style, check the boxes in the title bar next to Log and Alerts
to capture all categories, and click on the Apply button in the upper right hand corner to save
and activate the changes. For an example, see the screenshot below. Debug logs should only
be used for initial configuration and troubleshooting, and it is advised that once setup is
complete, you set the logging level to a more appropriate level for your network environment.
To enable log name resolution, go to Log > Name Resolution, choose DNS then NetBIOS
from the Name Resolution Menu drop-down list, and click on the Apply button in the upper
right hand corner to save and activate the changes.
X3 X1
X2 X0
X5
X4
CONSOLE
EX7000SRA
PWR1PWR2
TEST
ALARM
HD
Secure Remote Access
X3 X1
X2 X0
X5
X4
EX7000SRA
PWR1PWR2
TEST
ALARM
HD
X2 X0X4
X6
X2 X0
X3 X1
PWR1PWR2
TEST
ALARM
HD
X4
X5
X6
X7
HA
E7500
CONSOLE
BACON - SonicWALL CDP
192.168.25.75/24
YOGURT - SonicWALL SRA
192.168.200.10/24
https://sslvpn.vpntestlab.com
WAFFLE - SonicWALL SRA
192.168.200.1/24
https://sslvpn.vpntestlab.com
REDFISH- WWW1
192.168.200.210/24
https://www.vpntestlab.com
JAMBALAYA - WWW1
192.168.200.220/24
https://w
ww.vpntestlab.com
JASPER & DAISY
NSA E7500 HA PAIR
X0 LAN: 192.168.25.10/24
X1 WAN: 204.180.153.102/27
X4 DMZ: 192.168.200.2/24
L3 Switch
192.168.25.55/24