We've noticed both with a few customers and some of our own employees that when working remotely and using a VPN to connect in to the network, everything LF-related works fine, but we cannot connect to the WF server in the Designer. Accessing the repository using name/IP, browsing Forms and Web Client URL's using the DNS name of the server, and all other areas have no problems.
Is there a certain setting or configuration that needs to happen to make it work while on a VPN connection? The WF server is configured to use port 8085 by default.