Under UNIX all ports < 1024 are privileged ports. Only root may open a priviledged port. How to run Tomcat on port 80 without root privileges?
Put Apache httpd with mod_jk before your Tomcat servers, and use ports >= 1024 in the Tomcat(s).
/etc/httpd/conf/httpd.conf
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass /myapp http://localhost:8082/myapp
ProxyPassReverse /myapp http://localhost:8082/myapp
Use name-based virtual hosting
NameVirtualHost *:80 # NOTE: NameVirtualHost cannot be used without a port specifier # (e.g. :80) if mod_ssl is being used, due to the nature of the SSL protocol. # VirtualHost example: # Almost any Apache directive may go into a VirtualHost container. # The first VirtualHost section is used for requests without a known server name. <VirtualHost *:80> ProxyPass / http://localhost:8080/ ProxyPassReverse / http://localhost:8080/ ServerAdmin webmaster@bangtechtest.com DocumentRoot /var/www/bangtechtest.com ServerName 97.74.215.96 ServerAlias bangtechtest.com ErrorLog logs/bangtechtest.com-error_log CustomLog logs/bangtechtest.com-access_log common </VirtualHost> <VirtualHost *:80> ProxyPass / http://localhost:9080/ ProxyPassReverse / http://localhost:9080/ ServerAdmin webmaster@lastmorsel.com DocumentRoot /var/www/lastmorsel.com ServerName 97.74.215.97 ServerAlias lnpstest.contentdsi.com ErrorLog logs/lastmorsel.com-error_log CustomLog logs/lastmorsel.com-access_log common </VirtualHost>
../conf/server.xml
<Connector port="8082" ...
proxyName="www.mycompany.com"
proxyPort="80"/>