Parallels RAS offers another feature called the server-to-client URL redirection blacklist that helps organizations to block redirection of specific URLs. This is especially important when the company uses intranet. Consider an instance wherein the redirected URL points to the local intranet. The link only works if the end user has access to the local intranet. When the user is away from the office or at a remote location, the link will not work. As user applications are running on the same server, you can blacklist URLs that are on the intranet.
The URL Redirection blacklist can be configured at RAS Console > Farm > Settings > URL Redirection tab