Automatic outgoing interface selection
In the presence of several WAN interfaces in NAT rules on a workstation with UserGate, you may choose the “Any WAN interfaces” tab as an outgoing interface. This choice means that an outgoing network interface will be defined dynamically according to the network destination host address and the network part of all UserGate WAN adapters. If the network part of the destination host does not match any WAN adapter, the packet will be sent through the Primary Internet channel.

Important note! While using the Connection Failover, the automatic WAN interface selection option in NAT rules is disabled.