Question : rdp connection to win xp client on small business 2003 network blocked from outside network

Greetings,

I have a windows small business 2003 network with mostly xp clients and a few windows 7clients.

Most users use remote web workplace for remote access but a few also use remote desktop to connect directly to their computers.  In the past this has been no problem.

I have recently noticed that people trying to connect to the win xp clients can no longer use remote desktop connection to connect to their computers.  However it can be used from within teh network to connect to the computers and the win 7 computers can still be connected to via this method from outside the network.  

I have checked many things to troubleshoot this.  I have noticed that the firewall on the win xp machines is controlled by group policy and it seems to be configured correctly, in that it is allowing remote desktop connection and all users are using port 3389 on the lan port.

From within the network I can connect using an address such as remote.domainname.com:3391 which is the same address that would be used from outside the network.

I am a bit perplexed by this situation and would love any insight from others.

Thank you.

Sky

Answer : rdp connection to win xp client on small business 2003 network blocked from outside network

If the firewall is correct them the issue must be with the router, presuming there are no 3rd party software firewalls or security suits on the PC which could cause the same issue as the windows firewall.

If you are/were using remote.domainname.com:3391 and you haven't changed the listening port on the PC then the firewall/router needs to have a forwarding rule that forwards external pointed to port 3391 to an internal IP (that of the PC to which you want to connect) on port 3389. Can you verify that?