By default tomcat does not have any manager accounts,  setting up a manager account is important for ant remote deployments

1. open tomcat-users.xml which is located at <Tomcat>/conf/

you will see that by default there is no users, every thing is commented

add following code between “tomcat-users” tag

• manager-gui – allows access to the HTML GUI and the status pages
• manager-script – allows access to the text interface and the status pages
• manager-jmx – allows access to the JMX proxy and the status pages
• manager-status – allows access to the status pages only