Yes, Michel,
Current settings are direct to my machine (127.0.0.1) on a port I picked (5750). I then use Putty to do a port forward the the inside of my home to the ISY: 192.168.1.101 port 80. Works great.
As I do move back and forth between proxy and no proxy on my browsers, changing settings in two places...the browser and the Java console is too much of a hassle. I am happy with the simple port-forward method detailed above.
However, to close this topic out for anyone looking in the future to employ a proxy to gain access, I did attempt a socks proxy connection.
I set both the browser and the Java Settings (thru Control Panel) to a socks proxy of 127.0.0.1 and port 7070. Again, PUTTY on same machine listens to port 7070 and forwards the request with encapsulated URL/IP and port number to an SSH server within the home.
Unfortunately, I was not able get a successful connection into the ISY. I get the admin blue-page with headings, then I get the socket/XML errors identical to the one I detailed above.
I tried to clear the java cache, but get same result.
In any case, thx for your help here Michel.
On an offhand topic (that doesn't belong in this thread)....... the only good I can see between the Oracle/Google lawsuit is if Android would truly support true Java including Java browser support. It is such a shame that such a powerful paradigm (Java Applets) is not supported in any handheld nor tablet OS'es. How did Java lose it way on this?