Which feature allows Sophos Firewall to synchronize configurations between HA devices?

The feature that allows Sophos Firewall to synchronize configurations between high availability (HA) devices is Real-Time Configuration Sync. This functionality ensures that any changes made to the configuration on the primary firewall are instantly reflected on the secondary unit in an HA pair. This immediate synchronization is crucial for maintaining a consistent and cohesive network security posture across both devices, as it minimizes the risk of having differing configurations that could lead to security vulnerabilities or connectivity issues.

Real-Time Configuration Sync provides seamless updates, allowing administrators to manage configurations efficiently without the need for manual updates or periodic backups to be restored across devices. This leads to a more resilient architecture where both units operate in tandem, maintaining availability and performance even in the event of a unit failure.

Other options, while related to configuration management, do not specifically address the real-time aspect of synchronization. For instance, Bi-Directional Sync might imply a two-way transfer of configurations, but it doesn't ensure that updates are instantaneous. Active-Passive Replication generally focuses on the failover process rather than the live sync of configurations. Configuration Backup refers to the process of saving a configuration state for recovery purposes, rather than keeping devices synchronized in real-time.