We have a test enviroment with 1 vWorkspace 7.5 broker and 1 RDS server, both 2008R2.
From a LAN based workstation I can connect to the RDS server through the vWorkspace gateway.
When connection from a workstation through the internet, i cannot start the remote desktop.
The error message is: this computer can't connect to the remote computer
Logon and downloading/installing the client is possible.
Firewall ports 80 and 443 are open.