Broadcasts on UDP port 41224

In case it helps someone else:

I was seeing broadcasts ( dst:255.255.255.255 ) about every 30 seconds (top and middle of the minute) to UDP port 41224 from a windows box. The a process named "java" was sending to UDP port 41224, and a different "java" thread was listening on UDP port 41224.

The UDP payload only included the text, "KEY:ABCDXYZ"....

It turns out, it’s an e-trade streaming quote applet, runs in an IE window, but uses the java plugin (process name ‘java.exe' ). Apparently it's pay-ware, and it regularly sends out its key and listens for other applets with the same key, ostensibly to ensure that someone isn't running the same license on multiple computers.