I run a Secure Computing SG560 Firewall.
I am replacing our Windows Server 2003 Terminal Server with a 2008 Terminal Server.
Within our firewall rules, I have created a Definition and given the definition a name of the server plus the servers IP.
In Packet Filtering, I have created a rule, given it a descriptive name, set the action to Accept,
Incoming Interface: any
Outgoing Interface: any
Source Address: A defined IP address
Destination Address: The defined IP address of the terminal Server
Upon trying to RDP in, I get the following message: This computer can't connect to the remote computer.
So I enable logging, I can't even see the attempt in the log.
As some troubleshooting, I have changed the destination back to the old Terminal Server. Straight away, I get in and within the logging on the SG560 I can see the attempt.
Internally, I can RDP to the 2008 Server with no problem.
I read a KB stating to recreate the connection under Terminal Services Configuration in which I have.
It has made no difference. I have tried a few different version of RDP with the same problem when external but works fine internally.