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xDSL Network Module for the UTM9S and UTM25S
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ProSecure Unified Threat Management (UTM) Appliance
Note: After the primary interface fails, the default time to roll over is
2 minutes. The minimum test period is 30 seconds, and the
minimum number of tests is 4.
5. Click Apply to save your settings.
Note: You can configure the UTM to generate a WAN status log and email
this log to a specified address (see Configure Logging, Alerts, and
Event Notifications on page 466).
Configure Load Balancing and Optional Protocol Binding
To use multiple ISP links simultaneously, configure load balancing. In load balancing mode,
the DSL interface, USB interface or any WAN interface carries any outbound protocol unless
protocol binding is configured.
When a protocol is bound to a particular interface, all outgoing traffic of that protocol is
directed to the bound interface. For example, if the HTTPS protocol is bound to the DSL
interface and the FTP protocol is bound to the WAN1 interface, then the UTM9S or UTM25S
automatically routes all outbound HTTPS traffic from the computers on the LAN through the
DSL interface. All outbound FTP traffic is routed through the WAN1 interface.
Protocol binding addresses two issues:
• Segregation of traffic between links that are not of the same speed.
High-volume traffic can be routed through the DSL interface connected to a high-speed
link, and low-volume traffic can be routed through a WAN interface connected to a
low-speed link.
Custom DNS DNS queries are sent to the specified DNS server.
DNS Server The IP address of the DNS server.
Ping Pings are sent to a server with a public IP address. This server should not reject the
ping request and should not consider ping traffic to be abusive.
IP Address The IP address of the ping server.
Retry Interval is The retry interval in seconds. The DNS query or ping is sent periodically after every
test period. The default test period is 30 seconds.
Failover after The number of failover attempts. The primary WAN interface is considered down
after the specified number of queries have failed to elicit a reply. The backup
interface is brought up after this situation has occurred. The failover default is
four failures.
Table 145. Failure detection method settings (continued)
Setting Description