Are you aware that JBoss comes bundled with a running tomcat. This is the reason, why a standalone tomcat and jboss are conflicting. Of course you could run them together and should change the ports in your $TOMCAT_HOME/conf/server.xml (e.g. search for <Connector port="8080"). But at first you should take into consideration if you couldn't deploy your webapp *.war simply to jboss.