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SONICWALL SONICOS ENHANCED 2.5 ADMINISTRATOR’S GUIDE
C
HAPTER
10:
Setting Up WAN Failover and Load Balancing
Setting Up WAN Failover and Load Balancing
The following are the steps to configuring WAN Failover and Load Balancing on the SonicWALL
security appliance:
1
Configuring an interface as a Secondary WAN port
2
Creating a NAT Policy for the Secondary WAN port
3
Activating WAN Failover/Load-Balancing
4
Choosing a WAN Failover/Load-Balancing method
5
Setting Up Probe Monitoring
Configuring an Interface as a Secondary WAN Port
On Network > Interfaces page, configure the chosen port to be in WAN zone, and enter in the correct
address settings provided by the Secondary ISP. In the example, the SonicWALL security appliance
is acquiring its secondary WAN address dynamically from ISP #2, using DHCP. Any interface added
to the WAN zone by default creates a NAT Policy allowing internal LAN subnets to NAT out this
Secondary WAN interface.
Creating a NAT Policy for the Secondary WAN Port
You need to create a NAT policy on your SonicWALL for WAN Failover. Follow these steps to create
a NAT policy on your SonicWALL using the X4 interface (PRO 3060/4060/PRO5060) or OPT
interface (TZ 170):
1
Select Network>NAT Policies.
2
Click Add. The Add NAT Policy window is displayed.
3
Select Any from the Original Source menu.
4
Select X4 IP (PRO 3060/4060/5060) or OPT IP (TZ 170) from the Translated Source menu.
5
Select Any from the Original Destination menu.
6
Select Original from the Translated Destination menu.
7
Select Any from the Original Service menu.
8
Select Original from the Translated Service menu.
9
Select X0 from the Inbound Interface menu.
10
Select X4 (PRO 3060/4060/PRO5060) or OPT interface (TZ 170) from the Outbound Interface
menu.
11
Make sure the Enable setting is checked.
12
Click OK.