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Manually Configure Internet and WAN Settings
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ProSecure Unified Threat Management (UTM) Appliance
When the UTM is configured in auto-rollover mode, it uses the selected WAN failure
detection method to detect the status of the primary link connection at regular intervals. Link
failure is detected in one of the following ways:
• DNS queries sent to a DNS server
• Ping request sent to an IP address
• None (no failure detection is performed)
From the primary WAN interface, DNS queries or ping requests are sent to the specified IP
address. If replies are not received after a specified number of retries, the primary WAN
interface is considered down, and a rollover to the backup WAN interface occurs. When the
primary WAN interface comes back up, another rollover occurs from the backup WAN
interface back to the primary WAN interface. The WAN failure detection method that you
select applies only to the primary WAN interface, that is, it monitors the primary link only.
Configure Auto-Rollover Mode
To configure auto-rollover mode:
1. Select Network Config > WAN Settings > WAN Mode. The WAN Mode screen
displays:
Figure 45.
2. In the Load Balancing Settings section of the screen, configure the following settings:
a. Select the Primary WAN Mode radio button.
b. From the corresponding drop-down list on the right, select a WAN interface to
function as the primary WAN interface. The other WAN interface or interfaces
become disabled.
c. Select the Auto Rollover check box.
d. From the corresponding drop-down list on the right, select a WAN interface to
function as the backup WAN interface.