I want to start Tomcat 6.0.29 on port 80. My OS is CentOS release 5.5 (Final) I changed following line in $TOMCAT_HOME/conf/server.xml
go to address: /tomcat7/server.xml, edit file: use attribute porxyPort="80"
which will cause servlets inside this web application to think that all proxied requests were directed to www.mycompany.com on port 80.