To create/open a port exception on a remote Windows Firewall, such as Dameware using TCP port 6129.

1.  Open RegEdit on the PC to which you're logged on.
2.  From File > Connect Network Registry, select the computer whose firewall you need to adjust.  (It's assumed that you have administrative rights on the remote computer.)
3.  Navigate to the following key:
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\GloballyOpenPorts\List

4.  Create a new string (REG_SZ) value.  Name it 6129:TCP
5.  Give it the following value: 6129:TCP:*:Enabled:Dameware
6.  Close RegEdit.
7.  Run Dameware as you usually would and connect to the workstation.