Symantec Protection Engine (SPE) utilizes a User Interface built on top of Oracle Java. The following instructions provide a method to configure the Java security settings to disallow all secure connections not utilizing TLS 1.2.
(Note: This process was tested utilizing the latest version of Java 8. Older versions may not have the same features.)
jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, RC4, MD5withRSA, DH keySize < 768
To determine if the changes have taken effect:
The expected results would be TLS 1.2 allowing the connection while 1.0 or 1.1 fail.