The new Jan 2018 MAX manual has this option as “Latest” as per below image:
Manual says: Backward Compatibility Determine the level of backward compatibility needed for PepVPN tunnels. The use of the Latest setting is recommended as it will improve the performance and resilience of SpeedFusion connections.
So in effect what this is saying is that with this set we get better PepVPN performance? How much better and why?
Thank you for pointing out the unclear information for the user manual. We have reviewed again the MAX manual and we will fix the unclear info accordingly.
Basically the “Backward Compatibility” option is use to restricted the firmware version for the PepVPN connections and to comply the PCI DSS requirement.
Detail info please refer to the screenshot and PCI Compliance guide below: