How do I Block all traffic except RDP traffic to Terminal Server

[Guest]

We have a terminal server that is accessible when a user creates a VPN to our ISA Server. Now RRAS has an IP Packet filter for RDP traffic on port 3389 but if I enable this filter to block all traffic except the RDP traffic then they can't connect to the terminal server but if I allow ANY protocol, ANY source Port or type and ANY Destination Port or Code it works fine

What other ports are required to establish a remote desktop session to a terminal server?

 

[Vera Noest [MVP]]

I can't say that I have much experience with this myself, but check
if this helps:

275210 - How to Allow Access to Terminal Services on ISA from the
External Interface
http://support.microsoft.com/?kbid=275210

294720 - How to Server Publish a Terminal Server with ISA While also
Running Terminal Services on the ISA Server
http://support.microsoft.com/?kbid=294720

 

[Guest]

Thanks for replying Vera but neither article shows me how to do what I require. What I really need to know is what is required to create a remote desktop connection to a terminal server. It was my understanding that all that is required was port 3389 but this is obviously not the case.