Older versions of Security Center (prior to 5.4) do not support the Transport Layer Security (TLS) protocol. Therefore, supporting them makes your system more vulnerable to network attacks. To increase the security of your system, you must disable backward compatibility.
What you should know
Backward compatibility is enabled by default at system installation. This option applies to
the entire system.
CAUTION:
Mobile
Server 4.0 does not support TLS. Disabling
backward compatibility means that the Mobile apps and the Web Clients 4.0 will no longer
be able to connect to Security Center. All
expansion servers that have not yet been upgraded to version 5.4 or later will also stop
to work. Both Web
Client 4.1 and the
role-based Web
Client 5.6 and later support
TLS.