Remote Console - Curiosity

The implementation depends on the browser you use. IE, Edge and Safari are still using Java applet which implies installing Java. Chrome, Firefox and Opera already use HTML5/JavaScript (noVNC). See https://www.profitbricks.com/help/Remote_Console for more details.

I recommend to use the noVNC based access to the remote console: You don't need to install Java which brings in new vulnerabilties, it has a lower footprint and, personally, I found it to be faster.