Cannot get Remote Desktop to work on Windows 7

Question

Ok. I am having issues trying to connect remotely using RDP. From what I know, the network was pre-configured from another IT group and was able to get it up and running. My company was commissioned to migrate his old PC (WINXP) to Windows 7. I have gone
through the steps of allowing remote desktop and following instructions:
To configure remote access, follow these steps:
1. In Control Panel, click System And Security, and then click System.
2. On the System page, click Remote Settings in the left pane. This opens the System Properties dialog box to the Remote tab.
3. To disable Remote Desktop, select Don’t Allow Connections To This Com¬puter, and then click OK.Skip the remaining steps.
4. To enable Remote Desktop, you have two options. You can:
Select Allow Connections From Computers Running Any Version Of Remote Desktop to allow connections from any version of Windows.
Select Allow Connections Only From Computers Running Remote Desktop With Network Level Authentication to allow connections only from Windows 7 or later computers (and computers with secure network authentication).
5. Click Select Users. This displays the Remote Desktop Users dialog box.
6. To grant Remote Desktop access to a user, click Add. This opens the Select Users dialog box. In the Select Users dialog box, click Locations to select the computer or domain in which the users you want to work with are located. Type the
name of a user you want to work with in the Enter The Object Names To Select field, and then click Check Names. If matches are found, select the account you want to use and then click OK. If no matches are found, update the name you entered and try searching
again. Repeat this step as necessary, and then click OK.
7. To revoke remote access permissions for a user account, select the account and then click Remove.
8. Click OK twice when you have finished.
One thing that I found odd when he launched Remote Desktop from his home laptop is the IP entry:
Computer> [Public Router IP]:49250
Login> Domain\Admin
Password> *****
From the odd port number I would assume that was for port forwarding so I logged into his router and found exactly that. In port forwarding, he had the in/out as 49250 TCP to 192.168.30. I went into the firewall and enabled Remote Desktop in the inbound
rules. 
As of right now, I can use Remote Desktop to remote into the server, and withing their server, I cam use Remote Desktop to remote into the workstation. I just can't remote into the workstation directly using the port 49250. Any suggestions on this, something
I have missing?
He has Norton Security installed on this computer and I tried adding Inbound/Outbound rules to its 'Smart Firewall' to allow remote desktop and the port.

Answer 1

Thanks for the reply.
When I use Remote Desktop and use the Public IP of the router without the port number (49250), I am able to get into the server. However, when I try to use RDP with the [Public IP]:49250, it will not connect to the 192.168.0.30 workstation.
Right now the router is program to forward port 49250 requests to the 0.30 workstation.
I am going to work on the Inbound/Outbound Firewall settings today and see if this will resolve the issue.