Connecting through Remote Desktop External Network

[shakadon]

I have several virtual machines running in bridged mode on a Windows 7 computer.
They are for remote users that need to access our company software for invntory and sales order processing, so they need to have permissions to access a shared directory on our internal network.
I am having trouble getting the RDP to work connecting from outside our internal network to a virtual machine inside our network.
I have opened the ports on our router, and have the correct external IP address and am able to connect to standard, non virtual machines.

Currently we are using GoToMyPC for this function, and it works... but not great.

I have spent days trying different configurations, and nothing seems to work.
Is there a guide for this? It seems like it should be simple, but its not.

Any help would be greatly appreciated.
Don

[BillG]

What sort of guide would there be? When you set the devices to bridged mode VirtualBox provides the software to allow the vm to share the physical NIC in the host machine. Anything you do after that is the same whether you use physical or virtual machines, and depends only on how you configure the devices in your network and what software you use. VirtualBox plays no part in it.

If your scheme works on physical machines there is no reason why it would behave any differently with virtual ones.