One problem I have always run into with Virtual machines on your personal computer as a test environment is that you can’t include the Cisco configs in the environment or even setup routing between VMs. Your VMs have to be on the same network to talk or you have to install an additional server as a “Routing and Remote Access” server. Well there is a way around this using GNS3 and VirtualBox together as if they were meant to work together. In this article I will explain how to setup your virtual network in GNS3 and then attach your Virtual Machines to it in VirtualBox. It really is very simple.