Publisher Summary This chapter discusses Terminal Services and Citrix. Windows Terminal Services (WTS) and Citrix allow users to access resources and applications on remote computers. They use a technology that provides a connection to an entire desktop or an individual application. The most important use of the Juniper Citrix Terminal Services (CTS) proxy is to provide secure and consistent remote access to both Citrix and Microsoft Terminal Services clients without regard for the endpoint or the underlying protocol. Terminal Services access control policies limit access from thin clients to only the destination servers and ports that are necessary. Integration with the Host Checker application allows detailed rules to be created, giving very granular control of access policy. Terminal Services bookmarks control the thin client session look and feel, and give the administrator fine control over what users see and do during a session. The Instant Virtual Extranet ability to use Hosted Java Applets enables administrators to deploy custom thin client software provided by independent software vendors and open source developers.