Downloaded nucleus b87 zip from http://dlc.sun.com.edgesuite.net/glassfish/4.0/promoted/. Ran startserve from bin directory - it started GlassFish on port 8080. Tried to check what's on localhost:484. Got the splash screen from GlassFish Admin console that was never shown. If port 4848 should not react on requests sent through the port 4848 - it shouldn't have this port active.