Error using the .NET demo project

I am trying to use the demo project on codeproject.com on "How to Retrieve EMC Centera Cluster/Pool Capabilities"

and when I click on the "Get Cluster Info" button, I am getting the following error:

Can anybody help, please? Which ports need to be open?

************** Exception Text **************
System.Exception: Could Not Connect To The Centera pool.
Please make sure that the appropriate ports are open.
This could be a result of a firewall restriction
   at AdrdProjectCentera1.frmMainForm.GetCenteraPoolInfo(String PoolID)
   at AdrdProjectCentera1.frmMainForm.button1_Click(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)