How to access FreePBX on a vServer?

Dear Forum,

on a Centos 6.4 vServer, I followed the these install-instructions:

All seems to have worked fine, and logging into the server via putty now shows a FreePBX welcome message.

Hoping the question isn´t too silly: How can I access the GUI on the vServer? Entering the IP into a browser just gives me an “Apache 2 Test Page”.

Thanks and regards,