Coming from BSD, it so seemed that netstat -a would do the trick. However when I was running Active MQ, the console told me that port 8161 was being used but somehow netstat was not confirming that.

 Scratched my head, did a "man netstat" and it so figures that if the address cannot be resolved then that entry was not displayed. The answer is to perform;

netstat -anp =>that will take care of displaying 8161.