Terminal Services Setup Guide (2003)

Windows Server 2003 Terminal Services in terminal server mode can be run in either the Full Security or Relaxed Security compatibility mode to meet your organization's security policy and application requirements. Full Security mode was created to help lock down the terminal server environment to reduce the risk of users mistakenly installing software or inadvertently disabling the terminal server by moving directories or deleting Registry Keys. This mode can be used for most certified terminal server applications.

Read more.