Known to apply to the following Sophos product(s) and version(s)
Sophos UTM Software Appliance
What To Do
Configure Astaro Security Gateway to failover to alternate WAN links
1 – Confirm that all network interfaces are properly defined and configured under Network > Interfaces > Interfaces tab.
2 – Under Network > Interfaces > Uplink balancing tab click Enable.
2a – Select Failover from the Type drop-down menu.
2b – Click the folder icon in the Interfaces box to display the interface list, drag and drop all WAN links to be used into the Interfaces: box. (Note: in case of link failure, interfaces will be used in the order displayed, it is critical to have the interfaces in the correct order. Use the blue arrows to change interface order as appropriate).
2c – Leave the Automatic monitoring checkbox selected, or clear the checkbox and add specific hosts to use for monitoring into the Monitoring hosts: field. Monitoring hosts are used for regular ping checks to verify interface connectivity for all interfaces, and therefore must be available from all interfaces. Click Apply to save your settings.