RealVNC comes with an embedded http server that gives you a java viewer.
I believe when it is enabled it listens on port 5800
So using IE you can connect to a server by typing in
http://youhost.ip.here:5800
It works well.
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The RealVNC server has a java viewer built right into it and runs on
port 5800. If you are using it on *nix on different ports, it's port
580X where X is the display number. The java server is turned on and
off with a registry key HTTPConnect being set to a dword of 1. More
information on this
