Changing the port wouldn't help at all because I would still be binding to all the ip address of the machine on that port.
Bind 0.0.0.0:8080 and bind 0.0.0.0:8081 still bind to all ip addresses of the machine. In a shared environment this is a big no no.
[Message sent by forum member 'ericchile' (ericchile)]
http://forums.java.net/jive/thread.jspa?messageID=271587