Ubuntu将tomcat7 端口改为81:

apt-get install authbind

vi /etc/default/tomcat7

AUTHBIND=yes (默认为#AUTHBIND=no) :wq

vi /var/lib/tomcat7/conf/server.xml (默认为8080)

<Connector port="81" protocol="HTTP/1.1" connectionTimeout="20000" URIEncoding="UTF-8" redirectPort="8443" /> :wq

touch /etc/authbind/byport/81

chown tomcat7:tomcat7 /etc/authbind/byport/81

chmod 0755 /etc/authbind/byport/81

service tomcat7 restart

netstat –ntpl | grep 81