Configure firewall settings for DPM | Microsoft Docs
In IIS 7.0 Manager, in the Connections pane, click the server-level node in the tree. 2. In the list of features, double-click the FTP Firewall Support icon. 3. Enter a range of values for the Data Channel Port Range for your FTP service. 4. In the Actions pane, click Apply to save your configuration settings. TCP.