How to Port Forward Apache's 80 to Glassfish's 8080 Using Proxy Configuration

Recently, I'm developing and testing an application deployed on Glassfish that runs on port 8080. Then I do need the app to run on port 80, since I don't want to change the default port of Glassifh from 8080 to 80, I've just installed apache and try port forwarding, it worked and here's how I did it (I've done it in Ubuntu 11.10).

1.) Make sure that you have download, installed and configured Glassfish to run on port 8080. (Just need to download the zipped file from oracle: http://glassfish.java.net/downloads/).

2.) Download, installed and configured apache on port 8080.

sudo apt-get install apache2

3.) Enable proxy, proxy_http and rewrite modules on apache:

sudo a2enmod proxy
sudo a2enmod proxy_http
sudo a2enmod rewrite

4.) Create your custom apache proxy configuration file inside /etc/apache2/conf.d

NameVirtualHost *:80
<VirtualHost *:80>
 ProxyPreserveHost on
 RewriteEngine on
 ProxyPass / http://localhost:8080/
 ProxyPassReverse / http://localhost:8080/
 Redirect / http://localhost:8080/
 RewriteRule ^/(.*) http://localhost:8080/$1 [P,L]
</VirtualHost>