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Joined: 09 Oct 2002
Posts: 175
Location: Lausanne, Switzerland
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 Posted: Fri Jun 13, 03 16:21 Post subject: What ports are used by Microsoft Terminal Services? |
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Windows Terminal Server is part of RDP, Microsoft's "Remote Desktop Protocol," transmits keyboard, mouse, and display events to be processed by the server. It allows a user to display the desktop of a remote computer and manipulate files/ the mouse as though the user was sitting in front of that computer. Windows XP uses the same protocol to support its Remote Desktop option.
Terminal Services uses TCP port 3389. If you are using a web-based RDP client you will also need to open TCP port 80. These ports will need to be redirected to the computer on the LAN that is hosting the Terminal Server.
Be sure the computer running the Terminal Server has enough available RAM (just to log on to a Windows Terminal Services server about 20 MB of RAM will be used for each session + whatever software is to be used.) Only the NT Terminal Server, 2000 Server, Windows 2003 and XP are equipped with remote management services (Terminal Services). This Terminal Server will need to be running on one side and use the Terminal Service Client on the other side (currently there are clients for both Windows 98+ and Macintosh).
To verify if the remote Windows computer is ready to receive this traffic, open a console connection (DOS Prompt) and enter "netstat -an" and search for the above numbers.
CAUTION: it is not recommended to open these ports to general Internet access. It is best to use these only on a secured connection such as with IPSec or SSH Port Forwarding.
A full description of this protocol is available at Microsoft http://support.microsoft.com/default.aspx?scid=kb;EN-US;q186607 |
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