Apache Tricks

...yes I do spend my time on an eclectic variety of endeavours!

Here's a simple little gem of a way to make any or all of your internal web servers (ie 192.168.1.2) proxied back out through your main Apache server on 192.168.1.1. Both domain names must of course resolve to your single public server address (usually your router).

<VirtualHost 192.168.1.1:80 127.0.0.1:80>
        ServerName www.mydomain.com
        DocumentRoot /var/www/mydomain
        DirectoryIndex index.php index.html index.htm index.shtml
        LogLevel warn
        HostNameLookups off
</VirtualHost>

<VirtualHost 192.168.1.1:80 127.0.0.1:80>
        ProxyRequests off
        ProxyPass / http://192.168.1.2/
        <Location />
                ProxyPassReverse /
                SetOutputFilter proxy-html
                RequestHeader unset Accept-Encoding
        </Location>
        LogLevel warn
        ServerName www.myotherdomain.com
        DirectoryIndex index.php index.html index.htm index.shtml
        HostNameLookups off
</VirtualHost>

This last VirtualHost section can be repeated for as many webservers as you have on your intranet and which to make public.
Happy reverse-proxying!