Set up a free and secure Terminal Server with Linux

I have worked with a lot of clients who require Terminal Server. Many of these clients use the Terminal Server as a way to centralize application and file hosting. Many of them wind up paying a lot of money for Windows Terminal Server (and the necessary licensing) to see their users only firing up email, office suites, and maybe on occasion a specialized piece of software or financial software. A quick way to save your company cash is to ditch the Windows Terminal Server and migrate to using a Linux box.