Are there more ports required for RDP than 3389?

Posted on 2006-05-22
Last Modified: 2010-03-18
Our ISP has issued our D-link DI-604 Router a WAN IP of, due to the fact we are behind thier firewall, however, they have also given us a public IP.  Their firewall which port forwards the WAN IP to our Router (LAN IP which port forwards to our Server... The ISP is telling me that they have to open all ports of their firewall to allow RDP to happen? They are asking me the following....

"Remote Desktop started working when i opened up all ports on our firewall.  Remote
Desktop needs more than 3389 to work correctly which is why I wanted you
to remove all rules except one in the router for debugging.

Please send me the ports it needs so i can open up just those ports."

From my understanding RDP using only port 3389 to 3389? Are all ports required to be opened on our ISP's Firewall to allow RDP to go through? Without all ports opened up from our ISP, the RDP does not work?

Thanks, Jason

Question by:jgretsch
    1 Comment
    LVL 48

    Accepted Solution

    Hi jgretsch,

    you are correct, RDP only needs port 3389 to be passed through, if you are using any sortof VPN setup you may want them to open 1723 for PPTP, IPSec 500, 50-51, but this shouldnt make a difeence if you have a straight internet connection, they should only need 3389

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