The Management Console uses the defaultHTTP-NIO transport, which is configured in the catalina-server.xml file in the <IS_HOME>/repository/conf/tomcat directory. This transport must be properly configured in this file for the Management Console to be accessible.
The config-validation.xml file in the <PRODUCT_HOME>/repository/conf/etc directory contains a list of recommended system parameters, which are validated against your system when the server starts. See Configuring config-validation.xml for details on modifying these parameters before starting the server.
For information on installation prerequisites, click here.