| The TCP/IP port number on which this server waits for a shutdown
      command.  This connection must be initiated from the same server
      computer that is running this instance of Tomcat. Set to -1to disable the shutdown port. Note: Disabling the shutdown port works well when Tomcat is started
      using Apache Commons Daemon
      (running as a service on Windows or with jsvc on un*xes). It cannot be
      used when running Tomcat with the standard shell scripts though, as it
      will prevent shutdown.bat|.sh and catalina.bat|.sh from stopping it
      gracefully. |