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Manually Configure Internet and WAN Settings
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ProSecure Unified Threat Management (UTM) Appliance
Configure the WAN Mode
• Overview of the WAN Modes
• Configure Network Address Translation (All Models)
• Configure Classical Routing (All Models)
• Configure Auto-Rollover Mode and the Failure Detection Method (Multiple WAN Port
Models)
• Configure Load Balancing and Optional Protocol Binding (Multiple WAN Port Models)
Overview of the WAN Modes
For the multiple WAN port models, the UTM can be configured on a mutually exclusive basis
for either auto-rollover (for increased system reliability) or load balancing (for maximum
bandwidth efficiency). If you do not select load balancing, you need to specify one WAN
interface as the primary interface.
Note: For the UTM9S and UTM25S only, you can also use a DSL or USB
interface for load balancing mode, primary WAN mode, and
auto-rollover mode. However, in auto-rollover mode, a USB interface
can function only as a rollover interface.
For information about how to configure the DSL WAN interface, see
Appendix A, xDSL Network Module for the UTM9S and UTM25S.
For information about how to configure the USB WAN interface, see
Appendix C, 3G/4G Dongles for the UTM9S and UTM25S.
• Load balancing mode. The UTM distributes the outbound traffic equally among the
WAN interfaces that are functional. Depending on the UTM model, you can configure up
to four WAN interfaces. The UTM supports weighted load balancing and round-robin load
balancing (see Configure Load Balancing and Optional Protocol Binding (Multiple WAN
Port Models) on page 85).
Note: Scenarios could arise when load balancing needs to be bypassed
for certain traffic or applications. If certain traffic needs to travel on a
specific WAN interface, configure protocol binding rules for that
WAN interface. The rule should match the desired traffic.
• Primary WAN mode. The selected WAN interface is made the primary interface. The
other interfaces are disabled.
• Auto-rollover mode. A WAN interface is defined as the primary link, and another
interface needs to be defined as the rollover link. If the UTM model has more than two