Which option is essential for configuring WAN Failover on a SonicWall firewall?

Configuring WAN Failover on a SonicWall firewall requires two independent WAN connections to ensure reliability and continuous internet access. This setup allows the firewall to automatically switch to the backup connection if the primary connection experiences issues, such as a failure or poor performance. The independent nature of these connections is crucial; they should not be reliant on the same ISP or infrastructure to truly act as a failover.

Having two different WAN connections means that if one service goes down, the other can immediately take over, providing uninterrupted service. This failover process is managed by the SonicWall’s built-in capabilities, which monitor the health of the primary connection and automatically reroute traffic to the backup connection when necessary.

In contexts where only a single WAN connection or other forms of routing are used, there would be no capacity for failover since there would be no alternate path available for traffic, hence productivity could be adversely affected during an outage.