To access a Motorola RFS6000 you will need to install Java 1.4. This may be difficult to find, however it can be found on the archive pages (http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javase14-419411.html) of Oracle’s website, however you may need an account to access the actual download.
I installed version 22.214.171.124.
Opening the RFS6000 web interface, you may be prompted with a security certificate warning. In this case, click Yes (or Always if you wish). The certificate expired in 2011!
Once the applet has loaded, you can enter the default username / password: