Mac preventing loading Java site

I am trying to administer my Western Digital MyBookLife home network drive, using the Java based admin console provided by WD. The console is a web application served up from the drive itself.

However, since I upgraded to Java 8, the Mac is preventing me from loading the page (a Java applet), which is on my network at 192.168.1.2

I opened the Java console and added http://192.168.1.2 to my trusted network site list, however it is still rejecting me.

The message says

Application Blocked by Java Security
Name: WDTester
Location http://192.168.1.2
Reason: Your security settings have blocked an untrusted application from running.

Also, I am getting another prompt that says again "Application Blocked by Java Security" but this time it says reason: Your security settings have blocked an application signed with an expired or not-yet-valid certificate from running

I see in the Java Control Panel the exception site list containing my host, as specified above (I also added the same with https protocol, and I also added localhost just to be sure.) But for some reason, it is ignoring the exceptions.

What to do??