Virtual Host Redirection

explain our setup.

We have an in house centOS linux developer box running apache 2.x

We have our own on-site router/switch setup etc.

We host our external website whatever.com with Networksolutions

On our whatever.com DNS (via network solutions). We have our domain subscriber.whatever.com pointing to our external IP address. subscriber.whatever.com -> xx.xx.xx.xx

In our router configuration we have subscriber.whatever.com forwarding to our CentOS linux development box. it's forwarding to the internal network IP address 10.xx.xx.xx

However we want the box to redirect someone when they come in on subscriber.whatever.com... We basically want it to redirect them to subscriber.whatever.com:port/folder/

Preferably masked so that all someone would see is subscriber.whatever.com but they're actually at subscriber.whatever.com:port/folder/

Unfortunately network solutions's setup won't allow us to easily do this so we have to do it somehow locally.

Anyone have any suggestions? I've got this working on the box itself (if you goto the site on the box via gnome) however externally or on another system on our internal network it's a no go.