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Manually Configure Internet and WAN Settings
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ProSecure Unified Threat Management (UTM) Appliance
Note: After the primary WAN 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
(Multiple WAN Port Models)
To use multiple ISP links simultaneously, configure load balancing. In load balancing mode,
any WAN port carries any outbound protocol unless protocol binding is configured.
When a protocol is bound to a particular WAN port, all outgoing traffic of that protocol is
directed to the bound WAN port. For example, if the HTTPS protocol is bound to the WAN1
port and the FTP protocol is bound to the WAN2 port, then the UTM automatically routes all
outbound HTTPS traffic from the computers on the LAN through the WAN1 port. All outbound
FTP traffic is routed through the WAN2 port.
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 WAN port connected to a high-speed link,
and low-volume traffic can be routed through the WAN port connected to the low-speed
link.
• Continuity of source IP address for secure connections.
Some services, particularly HTTPS, cease to respond when a client’s source IP address
changes shortly after a session has been established.
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 17. Failure detection method settings (continued)
Setting Description