Setup External URL for EBS R12 using firewall port forwarding

Hi Support,

We would like to configure the external url of our current production EBS.  We won't be using any DMZ or a load balancer but we are only using Firewall port forwarding. The notes available on metalink are for DMZ and load balancer. Can you assist on what steps I should use?

The architecture is simple, just using a single node instance. We won't be using an external webtier.

External users will be accessing http://<company.domain>:port. A public IP was given to this. The firewall will received this and forwards this to the server. The EBS is access internally by