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Remote Desktop Protocol

Remote Desktop Protocol. Remote Desktop Protocol ( RDP ) is a multi-channel protocol that allows a user to connect to a computer running Microsoft Terminal Services . Clients exist for most versions of Windows, and other operating systems such as Linux , FreeBSD , and Mac OS X .

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Remote Desktop Protocol

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  1. Remote Desktop Protocol

  2. Remote Desktop Protocol (RDP) is a multi-channel protocol that allows a user to connect to a computer running MicrosoftTerminal Services. • Clients exist for most versions of Windows, and other operating systems such as Linux, FreeBSD, and Mac OS X. • The server listens by default on TCP port 3389. • Based on the ITUT.share protocol (also known as T.128), the first version of RDP (called version 4.0) was introduced with Terminal Services in Windows NT 4.0 Server, Terminal Server Edition. • Version 5.0, introduced with Windows 2000 Server, added support for a number of features, including printing to local printers, and aimed to improve network bandwidth usage. • Version 5.1, introduced with Windows XP Professional, included support for 24-bit color and sound. • Version 5.2, introduced with Windows Server 2003, included support for console mode connections, a session directory, and local resource mapping. • Version 6.0, which will be introduced with Windows Vista and Windows Server "Longhorn", will include a significant number of new features.

  3. Features • 24-bit color support, giving a palette of 16.7 million colors. (8-, 15-, and 16-bit color are also supported.) • 128-bit encryption, using the RC4 encryption algorithm. (This is the default security; older clients may use encryption of lesser strength.) • Audio allows users to run an audio program on the remote desktop and have the sound redirected to their local computer. • File System Redirection allows users to use their local fileson a remote desktop within the terminal session. • Printer Redirection allows users to use their local printer within the terminal session as they would with a locally or network shared printer. • Port Redirection allows applications running within the terminal session to access local serial and parallel ports directly. • The clipboard can be shared between the remote computer and the local computer.

  4. Upcoming features in RDP 6.0 • Remote Programs: Application publishing with client-side file type associations. • Seamless Windows: Remote applications can run on a client machine that are served by a Remote Desktop connection. • Terminal Server Gateway: • Enables the ability to use a front-end IIS server to accept connections for back-end Terminal Services servers via an HTTPS connection, similar to how RPC over HTTPS allows Outlook clients to connect to a back-end Exchange 2003 server. • Support for remoting of Avalon/WinFX applications: • Clients that have Avalon/WinFX support will be able to display full Avalon effects on a local machine. • Rewrite of device redirection to be more general-purpose, allowing a greater variety of devices to be remoted. • All of Terminal Services will be fully configurable and scriptable via WMI. • Bandwidth tuning for RDP clients.

  5. Other products • Provision Networks • Citrix MetaFrame • Independent Computing Architecture • Virtual Network Computing (VNC) • NX technology • rdesktop - free open source client for Unix platforms

  6. Third-party products • Thinstuff Touch Linux RDP and terminalserver solution - World's first commercial RDP server for Linux • iShadow Desktop - Multi-monitor, multi-protocol, multi-session tool for ICA, RDP and VNC connectivity. • 2X SecureRDP - Free tool to filter incoming RDP connections on terminal services • Microsoft RDP Man in the Middle Vulnerability - Article detailing Man in the middle attacks against Remote Desktop Protocol • properJavaRDP - free open source client in Java • xrdp - free open source prototype RDP server for Unix platforms, based on the VNC libraries

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