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Citrix Presentation Server (formerly '''Citrix MetaFrame Server''') is a remote access/application publishing product that allows people to connect to applications available from central servers. One advantage of publishing applications using Presentation Server is that it lets people connect to these applications remotely, from their homes, airport Internet kiosks, smart phones, and other devices outside of their corporate networks. From an end-user perspective, users can log in to their corporate network from, for example, an airport kiosk, see all of the applications they would see everyday at work, including Outlook email and any internal applications, and access them from the kiosk in a secure environment. To the user, the application would appear as if it was installed and running on their computer (seamless desktop integration), whereas in reality, the application is running on the Citrix Presentation Server, usually hosted in their corporate environment. Networks that use this software are reminiscent of the Mainframe – Terminal system, where a central powerful computer does most of the processing work and smaller, much less powerful machines provide the user interface. Some academic institutions use Presentation Server to provide their students and faculty with remote access to applications running on campus servers. TECHNICAL DETAILS AND LICENSING Presentation Server is built on the Independent Computing Architecture (ICA), Citrix Systems ' Thin Client Protocol . The Microsoft Remote Desktop Protocol , part of Microsoft's Terminal Services , is based on Citrix technology and was licensed from Citrix in 1997. Unlike traditional Framebuffer ed protocols like VNC , ICA transmits high-level window display information, much like the X11 protocol, as opposed to purely graphical information. Clients are available for several Operating Systems , including Microsoft Windows ( 16-bit , 32-bit and 64-bit platforms), Mac OS , Linux , and other Unix-like systems. Citrix MetaFrame version 3.x and 4.x servers listen for client connections on TCP Port 2598, by default. http://support.citrix.com/article/CTX104147&searchID=44199488 http://www.brianmadden.com/content/content.asp?ID=266 If the Session Reliability feature is disabled, then the server will listen on port 1494. Older MetaFrame servers (those running MetaFrame version 2.x or earlier) do not have the Session Reliablity feature, and therefore always default to port 1494. The Citrix Developer Network contains a set of Software Development Kits that enable custom development for the Citrix Presentation Server product. These SDKs include the following:
The Presentation Server product resides on a , Solaris , and AIX . UNIX VERSION COMPETITION Traditionally Citrix Presentation Server has faced minimal or no competition in the thin client computing space. But with Microsoft's new Terminal Services for Windows Server 2008 , Microsoft Terminal Services is emerging as a clear competitor to Citrix Presentation Server at least in the small and medium business market space. Citrix Presentation Server is built on top of the Windows Terminal Services platform which, ironically, was originally developed by Citrix in the early-mid 90s. SEE ALSO REFERENCES EXTERNAL LINKS |
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